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ECM DTC SET DDM DTC SET UEM DTC SET

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2003 town car door adjar light stays on and interior ilights are staying on , i replaced drivers door adjar switch ,door adjar light still on and interior lights are staying on ,killing battery also


i replaced drivers door adjar switch ,door adjar light still on????? one of the other door ajar switch is bad . Your best bet , take it to a qualified repair shop that has the diagnostic tools an knowledge to diagnose the problem . Not just guess an replace parts .Factory or professional scanner needed
DDM Diagnostic Trouble Code (DTC) Index
DTC Description DTC Caused By Action B1322 Door Ajar LF Circuit-Short to Ground DDM GO to Pinpoint Test B . B1342 ECU-Defective DDM REFER to Section 419-10 . B1566 RF, LR, RR Door Ajar Circuits Short to Ground DDM GO to Pinpoint Test B . For a complete listing of all DDM DTCs, GO to Section 419-10 .
Driver door also has control module DDM - driver door module .

  • The interior lamps stay on continuously
  • Circuitry.
  • Switches.
  • Driver door module (DDM).
  • Lighting control module (LCM).
  • GO to Pinpoint Test B .

Ford Factory service repair info. pin point test .

PINPOINT TEST B: THE INTERIOR LAMPS STAY ON CONTINUOUSLY Test Step Result / Action to Take B1 USE THE RECORDED RESULTS FROM LCM SELF-TEST
  • Use the recorded results from LCM self-test.
  • Are any DTCs recorded?
Yes
DTC B1688, GO to B13 .

DTC 1342, GO to B15 .

For all other DTCs, REFER to Section 419-10 .

No
GO to B2 . B2 USE THE RECORDED RESULTS FROM DDM SELF-TEST
  • Use the recorded results from DDM self-test.
  • Are any DTCs recorded?
Yes
DTC B1322, GO to B3 .

DTC B1566, GO to B4 .

No
GO to B3 . B3 CHECK THE DRIVER DOOR AJAR INPUT - MONITOR THE DDM PID D_DR_DD
  • Monitor the DDM PID D_DR_DD while opening and closing the driver door.
  • Does the DDM PID value agree with the switch positions?
Yes
GO to B4 .

No
GO to B10 . B4 CHECK THE PASSENGER DOOR AJAR INPUT - MONITOR THE DDM PID P_DR_DD
  • Monitor the DDM PID P_DR_DD while opening and closing the LR, RF, and RR doors.
  • Do the DDM PID values agree with the switch positions?
Yes
GO to B12 .

No
GO to B5 . B5 CHECK THE RF, RR, AND LR DOOR AJAR SWITCHES - MONITOR THE DDM PID P_DR_DD
  • Key in OFF position.
  • Disconnect door ajar switches C602a, C715, and C820a.
  • Key in ON position.
  • Monitor the DDM PID P_DR_DD.
  • Does the DDM PID indicate AJAR?
Yes
GO to B9 .

No
GO to B6 . B6 CHECK THE RF DOOR AJAR SWITCH - MONITOR THE DDM PID P_DR_DD
  • Key in OFF position.
  • Connect: RF Door Ajar Switch.
  • Close the RF door.
  • Key in ON position.
  • Monitor the DDM PID P_DR_DD.
  • Does the DDM PID indicate AJAR?
Yes
INSTALL a new RF door ajar switch. TEST the system for normal operation.

No
GO to B7 . B7 CHECK THE RR DOOR AJAR SWITCH - MONITOR THE DDM PID P_DR_DD
  • Key in OFF position.
  • Connect: RR Door Ajar Switch.
  • Close the RR door.
  • Key in ON position.
  • Monitor the DDM PID P_DR_DD.
  • Does the DDM PID indicate AJAR?
Yes
INSTALL a new RR door ajar switch. TEST the system for normal operation.

No
GO to B8 . B8 CHECK THE LR DOOR AJAR SWITCH - MONITOR THE DDM PID P_DR_DD
  • Key in OFF position.
  • Connect: LR Door Ajar Switch.
  • Close the LR door.
  • Key in ON position.
  • Monitor the DDM PID P_DR_DD.
  • Does the DDM PID indicate AJAR?
Yes
INSTALL a new LR door ajar switch. TEST the system for normal operation.

No
GO to B16 . B9 CHECK CIRCUIT 627 (BK/OG) FOR SHORT TO GROUND
  • Key in OFF position.
  • Disconnect: DDM C501b.
  • Measure the resistance between DDM C501b pin 6, circuit 627 (BK/OG), and ground.
  • Is the resistance greater than 10,000 ohms?
Yes
GO to B16 .

No
REPAIR circuit 627 (BK/OG). TEST the system for normal operation. B10 CHECK THE DRIVER DOOR AJAR SWITCH - MONITOR THE DDM D_DR_DD
  • Disconnect: Driver Door Ajar Switch C526a.
  • Close the driver door.
  • Key in ON position.
  • Monitor the DDM PID D_DR_DD.
  • Does the DDM PID indicate AJAR?
Yes
GO to B11 .

No
INSTALL a new driver door ajar switch. TEST the system for normal operation. B11 CHECK CIRCUIT 867 (DB) FOR OPEN
  • Key in OFF position.
  • Disconnect: DDM C501b.
  • Measure the resistance between DDM C501b pin 5, and driver door ajar switch C526a, circuit 867 (DB).
  • Is the resistance less than 5 ohms?
Yes
GO to B16 .

No
REPAIR open in circuit 867 (DB). TEST the system for normal operation. B12 CHECK CIRCUIT 53 (BK/LB) FOR SHORT TO BATTERY VOLTAGE
  • Key in OFF position.
  • Disconnect: LCM C2145c.
  • Key in ON position.
  • Measure the voltage between LCM C2145c pin 11, circuit 53 (BK/LB), and ground.
  • Is the voltage greater than 10 volts?
Yes
REPAIR circuit 53 (BK/LB). TEST the system for normal operation.

No
GO to B15 . B13 CHECK THE DOME LAMP INPUT - MONITOR THE LCM PID DOMESW
  • Monitor the LCM PID DOMESW while pressing and releasing the dome lamp switch.
  • Does the LCM PID value agree with the switch positions?
Yes
GO to B15 .

No
GO to B14 . B14 CHECK THE HEADLAMP SWITCH - MONITOR THE LCM PID DOMESW
  • Key in OFF position.
  • Disconnect: Headlamp Switch.
  • Monitor the LCM PID DOMESW.
  • Does the LCM PID value indicate OFF?
Yes
INSTALL a new headlamp switch. REFER to Section 417-01 . TEST the system for normal operation.

No
REPAIR circuit 1034 (BK/WH). TEST the system for normal operation. B15 CHECK FOR CORRECT LCM OPERATION
  • Disconnect all LCM connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all LCM connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present?
Yes
INSTALL a new LCM. REFER to Section 419-10 .

CARRY OUT DATA LINK DIAGNOSTIC test.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. B16 CHECK FOR CORRECT DDM OPERATION
  • Disconnect all DDM connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all DDM connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present?
Yes
INSTALL a new DDM. REFER to Section 419-10 .

CARRY OUT DATA LINK DIAGNOSTIC test.

No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Aug 06, 2018 | Cars & Trucks

1 Answer

Which fuse or relay controls windows and power seats 2004 chevy tahoe


Electronic control module controls the windows an power seats .
B+ voltage for power windows come's from a 25 amp circuit breaker .
Power Window System Components
The power window system consists of the following components:
• Driver Door Module (DDM)
• Passenger Door Module (PDM)
• Body Control Module (BCM)
• RR power window switch
• Window up and window down relays in each of the rear passenger window switches
• Window lockout switch
• Reversible power window motors in each of the doors (circuit breaker protected)
• LT DOOR CB 25A (System power for left windows)
• RT DOOR CB 25A (System power for right windows)

Power Window System Controls
The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position.
The DDM contains four power window switches which are integral components. Closing any of the normally open, rocker type switches provides the DDM with a request for power window operation. The switches for the two front windows have three positions UP, Down and Express Down, while the switches for the rear windows have only two positions, UP and Down. Each of these switches and their positions is a direct input into the DDM. Upon receiving a request for power window operation, the DDM, transmits a Class 2 message indicating the switch and it's changed position.
The PDM contains a single power window switch that is an integral component. Closing of this normally open, rocker switch provides the PDM with a request for the front passenger power window operation. The switch for the front passenger window has two positions Up and Down. Each of these switch positions is a direct input to the PDM.
The two rear passenger doors have there own switches. Each of the switches contain a power window up and down relay. A switch activation alone can control the up and down functions of the rear windows. However the BCM, upon receiving a Class 2 message from the DDM, can control the set of relays which will activate the rear window motors.

Does your vehicle have memory seats ?
Taking your vehicle to a qualified repair shop an having the systems checked for DTC'S - diagnostic trouble code's should be the first step , unless you have a factory or professional type scanner that can read these code's
DTC B1023
DTC B1544, B1600, or B1605
DTC B1580, B1590, B1610, or B1620
DTC B1640 or B1645
DTC B1722
DTC B3808
DTC B3809
DTC B3819
DTC B3820
DTC B3821
DTC B3822
DTC B3823
DTC B3824
DTC B3825

Jan 06, 2018 | Cars & Trucks

2 Answers

2003 grand marquis ls door locks and trunk not working


Hi, sounds like you may have lost power. Check your fuses, remember, you have fuses in the cab and under the hood. Hope that helps

Oct 10, 2017 | Cars & Trucks

1 Answer

Crown vic trunk release doesn't work


Do you know if your door locks are module controlled or non module controlled ?
Locks, Latches and Entry Systems - Module Controlled
Principles Of Operation
s5a~tr~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not use a key, pencil or any other hard object to press the keyless entry keypad buttons. These objects may damage the keyless entry keypad buttons.
NOTE: The remote transmitter will not operate with the transmission in REVERSE or DRIVE.
NOTE: Upon installation of a new driver door module (DDM), the module must be reconfigured. Refer to Section 418-01 .
The DDM receives inputs from the digital transmission range (TR) sensor, ignition switch, brake switch, door lock control switches, lighting control module (LCM), keyless entry keypad and remote transmitter. The DDM outputs consists of keyless entry keypad illumination, door lock actuators, luggage compartment lid release solenoid, and LCM.
For DDM removal and installation information, refer to Section 419-10 .
Inspection and Verification
s5a~tr~en~file=ani_caut.gif~gen~ref.gif WARNING: If equipped with fire suppression system, refer to Section 419-03 for important safety warnings.
NOTE: Before starting electrical diagnosis, check for mechanical binds by manually operating the door locks. Operate lock system several times from each switch while observing the operation of all door locks. Be sure battery is fully charged.
  1. Verify the customer concern.
  1. Visually inspect for obvious signs of mechanical and electrical damage.
  2. Visual Inspection Chart Mechanical Electrical
    • Binding latches
    • Battery junction box (BJB) fuse 8 (20A)
    • Central junction box (CJB) fuse(s):
      • 10 (5A)
      • 18 (10A)
      • 25 (10A)
    • Circuitry
    • Connectors
    • Door lock actuator
    • Door lock control switch
    • Keyless entry keypad
    • Luggage compartment lid release switch
    • Luggage compartment lid release solenoid

    1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    1. If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
      • check that the program card is correctly installed.
      • check the connections to the vehicle.
      • check the ignition switch position.
    1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
    1. Carry out the diagnostic tool data link test. If diagnostic tool responds with:
      • SCP or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 419-10 .
      • No response/not equipped for the DDM, refer to Section 419-10 .
      • No response/not equipped for the LCM, refer to Section 419-10 .
      • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the DDM and LCM.
    1. If the DTCs retrieved are related to the concern, go to the Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index or Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
    1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
    Drive Door Module (DDM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1352 Ignition Key In Circuit Failure DDM Go To Pinpoint Test H . B1396 Door Lock Circuit Short To Battery DDM Go To Pinpoint Test C . B1526 Keyless Entry Keypad Circuit Short To Ground DDM Go To Pinpoint Test E . B1553 Luggage Compartment Lid Release Circuit Short To Ground DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short To Battery DDM Go To Pinpoint Test L . B2425 Remote Keyless Entry Out Of Synchronization DDM Go To Pinpoint Test M .
    Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index
    DTC Description Source Action B1300 Door Lock Circuit Failure LCM Go To Pinpoint Test N . B1310 Door Unlock Circuit Failure LCM Go To Pinpoint Test N . B1396 Door Lock Circuit Short To Battery LCM Go To Pinpoint Test N . B1397 Door Unlock Circuit Short To Battery LCM Go To Pinpoint Test N . B1677 Alarm Panic Input Circuit Failure LCM Go To Pinpoint Test J . B1679 Alarm Panic Input Circuit Short To Battery LCM Go To Pinpoint Test J .
    NOTE: For a complete list of DDM and LCM DTCs, refer to Section 419-10 .
  3. ????????????? Do you have a professional scan tool ?
    ??

Sep 17, 2016 | 2005 Ford Crown Victoria

1 Answer

Turn signals do not work, have replaced module, still do not work


Find a wiring diagram an get a DVOM - digital volt ohm meter an do some electrical testing . Videos on you tube on basic automotive electrical testing , how to read a wiring diagram . Then go http://bbbind.com/free_tsb.html free wiring diagrams . What component controls windows an door locks , I know what does , what to see what you think does . The speedometer not working is probably the step motor inside the instrument cluster . New instrument cluster ! Replace the turn signal switch.
The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door. The driver door module (DDM) is the master control for the door lock system but the rear integration module (RIM) contains the program that determines when the lock functions are permitted.
The vehicle is equipped with power windows controlled by the door modules. The DDM receives a window switch request, over the SBI serial data, from either the passenger door module wired to the window switch pressed or from the driver door switch assembly. The DDM checks the Class 2 serial data to see if the status information is correct (i.e. ignition switch position) to permit window operation.
If the status information to permit window operation is correct, the DDM sends the command to the door module controlling the window to move the window as requested.
Windows Power and Ground
The windows are powered by discreet power and ground circuits. These circuits are in the same dedicated connector as the window motor drive circuits.
These systems are very complex and are able to set DTC'S in the controlling module .Your best bet is to take your vehicle to a qualified repair shop .
DTC B3142 LF Unlock Switch Circuit Low DTC B3147 Passenger Unlock Switch Circuit Low DTC B3152 LF Lock Switch Circuit Low DTC B3157 Passenger Lock Switch Circuit Low DTC B3172 RF Window Up Switch Circuit Low DTC B3177 RF Window Down Switch Circuit Low DTC B3182 LR Window Up Switch Circuit Low DTC B3187 LR Window Down Switch Circuit Low DTC B3192 RR Window Up Switch Circuit Low DTC B3197 RR Window Down Switch Circuit Low DTC B3377 LF Window Up Switch Circuit Low DTC B3382 LF Window Down Switch Circuit Low DTC B3387 RF Window Up Switch Circuit Low DTC B3392 RF Window Down Switch Circuit Low DTC B3397 LR Window Up Switch Circuit Low DTC B3452 LR Window Down Switch Circuit Low DTC B3457 RR Window Up Switch Circuit Low DTC B3462 RR Window Down Switch Circuit Low DTC B3467 LF Window Express Down Circuit Low DTC B3472 RF Window Express Down Circuit Low DTC B3527 Window Lockout Switch Circuit Low
DTC'S are intended to point the qualified technician in the correct diagnostic path. You may have a communication or network problem . Are you familiar with class two serial data bus communication network . The simple bus provides a means for information exchange among the vehicle door modules. Door module information on inputs and commanded outputs are converted to serial bus interface data for exchange among the door modules. The DDM can also take information from modules connected to the class 2 serial data circuit and relay the command to the simple bus interface. The vehicle power mode message (ignition switch position) from the DIM is an example. The DDM periodically addresses each module on the simple bus interface. When a module does not respond to the DDM, the DTC for that module is set. You can't just replace these modules , some need to be programmed . Dealer only ! First check codes , power an grounds etc....

Jun 29, 2016 | 2000 Buick LeSabre Custom

1 Answer

2003 saturn L300 p1780


DTC P1780 (3.0L (L81))

To improve shift feel, the transmission control module (TCM) may request that the engine control module (ECM) reduce engine torque during shift events. When such a request is received, the ECM responds by retarding the base ignition timing and notifying the TCM that the request has succeeded. If the ECM is unable to comply with the request, the ECM sends the TCM a message that the request has failed.
The torque reduction request is sent to the ECM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM. A fault in the CAN will not cause DTC P1780 to set by itself. If a CAN fault occurs, other DTCs will set before DTC P1780.
When the TCM receives a torque reduction failure message from the ECM, then DTC P1780 will set. DTC P1780 is a type C DTC. Take your pick of which you think this code is for , this or the TSB - technical service bulletin. What need to hook up scan tool an data PID'S - Do you know what PID'S are ? sensor data read on a scan tool .

Mar 04, 2016 | 2003 Saturn L-Series

1 Answer

The truck release does not respond to the key fob or the door release. Driver door lock does not respond to the fob or the number pad on the door.


The best place to start is take it an have it checked for DTC'S -diagnostic trouble codes ! Not with a code reader ,as these just read OBD2 codes .Not Body control module codes >
DDM Diagnostic Trouble Code (DTC) Index
DDM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1322 Driver Door Ajar Circuit Short to Ground DDM Go To Pinpoint Test N . B1352 Ignition Key in Circuit Failure DDM Go To Pinpoint Test H . B1396 Power Door Lock Circuit Short to Battery DDM Go To Pinpoint Test A . B1397 Power Door Unlock Circuit Short to Battery DDM Go To Pinpoint Test A . B1526 Keyless Entry Circuit Short to Ground DDM Go To Pinpoint Test E . B1553 Decklid Release Circuit Short to Battery DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short to Battery DDM Go To Pinpoint Test K . B2425 Remote Keyless Entry Out of Synchronization DDM Go To Pinpoint Test L . LCM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1300 Power Door Lock Circuit Failure LCM Go To Pinpoint Test M . B1310 Power Door Unlock Circuit Failure LCM Go To Pinpoint Test M . B1319 Driver Door Ajar Circuit Failure LCM Go To Pinpoint Test N . B1322 Driver Door Ajar Circuit Short to Ground LCM Go To Pinpoint Test N . B1396 Power Door Lock Circuit Short to Battery LCM Go To Pinpoint Test M . B1397 Power Door Unlock Circuit Short to Battery LCM Go To Pinpoint Test M . B1677 Alarm Panic Input Circuit Failure LCM Go To Pinpoint Test O . B1679 Alarm Panic Input Circuit Short to Battery LCM Go To Pinpoint Test O . Visual Inspection Chart Mechanical Electrical
  • Binding latches
  • Battery junction box (BJB) fuses:
    • circuit breaker 7 (20A)
  • Central junction box (CJB)
    • 4 (10A)
    • 6 (15A)
    • 8 (25A)
    • 13 (5A)
  • Keyless entry keypad switch
  • Power door lock actuator
  • Luggage compartment release switch
  • Luggage compartment release solenoid
  • Connectors or connections
  • Wiring harness

Dec 30, 2015 | 2001 Ford Crown Victoria

1 Answer

2001 Lincoln towncar signature....PROBLEM:power door locks-trunk release-driver side power seat-keyless outer door entry-radio&clock......when weather is hot, door locks-trunk release-power seat-keyless...


What mechanics ? No codes stored in driver door module or power seat module ? Or don't these mechanics know about that ?
Did you try the dealer ?
Diagnostic Trouble Code (DTC) Chart DTC Description Source Action B1201 Fuel Sender Circuit Failure HEC Module REFER to Section 413-01 . B1204 Fuel Sender Circuit Short to Ground HEC Module REFER to Section 413-01 . B1205 Failure (Open or Short to Battery) HEC Module REFER to Section 413-08 . B1208 HEC Switch-1 Assembly Circuit Short to Ground HEC Module REFER to Section 413-08 . B1213 PATS Number of Programmed Keys is Below Minimum HEC Module REFER to Section 419-01 . B1231 Longitudinal Acceleration Threshold Exceeded RCM REFER to Section 501-20B . B1232 PATS Bad Diagnostic Byte Received HEC Module REFER to Section 419-01 . B1249 Blend Door Failure EATC Module REFER to Section 412-00 . B1251 Climate Control Air Temperature Internal Sensor Circuit Open EATC Module REFER to Section 412-00 . B1253 Climate Control Air Temperature Internal Sensor Circuit Short to Ground EATC Module REFER to Section 412-00 . B1255 Climate Control Air Temperature External Sensor Circuit Short to Battery EATC Module REFER to Section 412-00 . B1257 Climate Control Air Temperature External Sensor Circuit Short to Ground EATC Module REFER to Section 412-00 . B1261 Climate Control Solar Radiation Sensor Circuit Short to Ground EATC Module REFER to Section 412-00 . B1312 Headlamp Input Circuit Short to Battery LCM REFER to Section 417-01 . B1317 Battery Voltage High HEC Module REFER to Section 414-00 . B1317 Battery Voltage High RCM REFER to Section 414-00 . B1317 Battery Voltage High Air Suspension Module REFER to Section 204-05 . B1318 Battery Voltage Low HEC Module REFER to Section 414-00 . B1318 Low Ignition Voltage During Speed Control Operation NGSC Module REFER to Section 310-03 . B1318 Battery Voltage Low Air Suspension Module REFER to Section 204-05 . B1318 Battery Voltage Low RCM REFER to Section 414-00 . B1322 Door Ajar LF Short to Ground DDM REFER to Section 501-14B . B1334 Decklid Ajar Rear Door Circuit Short to Ground LCM REFER to Section 501-14B . B1340 Chime Input Request Circuit Short to Ground LCM REFER to Section 501-20B . B1342 ECU is Defective ABS Module CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new ABS Module. REFER to Section 206-09 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective ACM CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new ACM. REFER to Section 415-01 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective CPM CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new CPM. REFER to Section 419-08 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective DDM CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new DDM. REFER to Section 419-10 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective DSM CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new DSM. REFER to Section 419-10 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective HEC Module CLEAR and DOCUMENT the DTCs. PERFORM the HEC self-test. If DTC B1342 is retrieved, INSTALL a new HEC Module. REFER to Section 413-01 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective LCM CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new LCM. REFER to Module-Lighting Control (LCM) in this section. CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective NGSC Module CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new NGSC Module. REFER to Section 310-03 . CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective Air Suspension Module CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new air suspension module. REFER to Module-Air Suspension in this section. CLEAR the DTCs. REPEAT the self-test. B1342 ECU is Defective RCM REFER to Section 501-20B . B1352 Ignition Key-In Circuit Failure LCM REFER to Section 413-09 . B1359 Ignition RUN/ACCY Circuit Failure LCM REFER to Section 211-05 . B1396 Power Door Lock Circuit Short to Battery DDM REFER to Section 501-14B . B1397 Power Door Unlock Circuit Short to Battery DDM REFER to Section 501-14B . B1402 Driver Power Window Down Circuit Failure DDM REFER to Section 501-11 . B1445 Door Handle Circuit Short to Ground DDM REFER to Section 501-14B . B1446 Wiper PARK Sense Circuit Failure LCM REFER to Section 501-16 . B1484 Brake Pedal Input Open Circuit ABS Module REFER to Section 206-09 . B1485 Brake Pedal Input Circuit Short to Battery LCM REFER to Section 417-01 . B1526 Keyless Entry Circuit Short to Ground DDM REFER to Section 501-14B . B1529 Memory Set Switch Circuit Short to Battery DDM REFER to Section 501-09 . B1533 Memory Position No. 1 Switch Circuit Short to Battery DDM REFER to Section 501-09 . B1537 Memory Position No. 2 Switch Circuit Short to Battery DDM REFER to Section 501-09 . B1545 Seat Direction Switch Assembly Circuit Short to Battery DDM REFER to Section 501-10 . B1549 Power Window Master Circuit Short to Battery DDM REFER to Section 501-11 . B1553 Decklid Release Circuit Short To Battery DDM REFER to Section 501-14B . B1555 RUN/START Input Circuit Failure LCM REFER to Section 211-05 . B1556 RF, LR, RR Door Ajar Circuits Short to Ground DDM REFER to Section 501-14B . B1569 Headlamp High Beam Circuit Short to Battery LCM REFER to Section 417-01 . B1577 Parking Lamp Input Short to Battery LCM REFER to Section 417-01 . B1581 Panel Dim Increase Input Circuit Short to Battery LCM REFER to Section 413-00 . B1585 Panel Dim Decrease Input Circuit Short to Ground LCM REFER to Section 413-00 . B1600 PATS Key Problem - No Key Code HEC Module REFER to Section 419-01 . B1601 PATS Received Non-Programmed Key Code HEC Module REFER to Section 419-01 . B1602 PATS Received Invalid Key Code Format HEC Module REFER to Section 419-01 . B1663 Driver Seat Front Up/Down Motor Stalled DSM REFER to Section 501-10 . B1664 Driver Seat Rear Up/Down Motor Stalled DSM REFER to Section 501-10 . B1665 Driver Seat Forward Backward Motor Stalled DSM REFER to Section 501-10 . B1666 Driver Seat Fwd/Bwd Recline Motor Stalled DSM REFER to Section 501-10 .
Also do there know anything about serial data bus ?
Plus , do they know what voltage drop testing a electrical circuit is . I should find better mechanics .

May 31, 2017 | Cars & Trucks

1 Answer

I need a wiring diagram for the IPC in a 2004 Cadillac Deville. Trying to troubleshoot a U0155 OBDII code. The symptom is that my climate control display only shows LED's intermittantly. All of the...


Do you know what U code's are for ? How did you pull this code ? There is no U0155 , U code's start at
Diagnostic Trouble Code (DTC) List
DTC
Diagnostic Procedure
Modules
U1000
DTC U1000 and U1255
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, Remote Playback Device CD Changer, RCDLR, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1016
DTC U1001-U1254
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC , IPM, LMDM, LRDM, MSM, Radio, RCDLR, RIM, RRDM, RMDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1040
DTC U1001-U1254
IPC, PCM, SDM
U1056
DTC U1001-U1254
EBCM, PCM
U1064
DTC U1001-U1254
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, RCDLR, Remote Playback Device CD Changer, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1065
DTC U1001-U1254
DDM, DIM, ESC, FPDM, IPC, LMDM, LRDM, VCIM, HVAC Control Module - Auxiliary, PCM, Radio, RIM, RMDM, RRDM, VCIM
U1066
DTC U1001-U1254
DDM, FPDM, IPC, IPM, PCM
U1088
DTC U1001-U1254
IPC
U1096
DTC U1001-U1254
PCM, SDM
U1128
DTC U1001-U1254
Audio Amplifier, Cellular Telephone Module, Digital Radio Receiver, Remote Playback Device CD Changer, VCIM
U1129
DTC U1001-U1254
Radio
U1130
DTC U1001-U1254
Radio
U1137
DTC U1001-U1254
Radio
U1144
DTC U1001-U1254
IPC, Radio
U1151
DTC U1001-U1254
Radio
U1160
DTC U1001-U1254
IPC, RIM
U1161
DTC U1001-U1254
IPC, RIM
U1162
DTC U1001-U1254
IPC, RIM
U1163
DTC U1001-U1254
IPC, RIM
U1164
DTC U1001-U1254
DDM, Digital Radio Receiver, DIM, FPDM, IPC, LRDM, MSM, VCIM, Radio, RIM, RRDM, Steering Column Module
U1165
DTC U1001-U1254
DDM, FPDM, LRDM, RRDM
U1176
DTC U1001-U1254
IPC
U1192
DTC U1001-U1254
IPC, PCM
U1255
DTC U1000 and U1255
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, Remote Playback Device CD Changer, RCDLR, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1300
DTC U1300, U1301, or U1305
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, Remote Playback Device CD Changer, RCDLR, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1301
DTC U1300, U1301, or U1305
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, Remote Playback Device CD Changer, RCDLR, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car
U1305
DTC U1300, U1301, or U1305
Audio Amplifier, Cellular Telephone Module, DDM, DDSA, Digital Radio Receiver, DIM, EBCM, ESC, FPDM, HVAC Control Module - Auxiliary, IPC, IPM, LMDM, LRDM, MSM, PCM, Radio, Remote Playback Device CD Changer, RCDLR, RIM, RMDM, RRDM, SDM, Steering Column Module, Theft Deterrent Control Module, VCIM, Window Switch - Front Passenger w/armored car

The data link connector (DLC) allows a scan tool to communicate with the class 2 serial data line. The serial data line is the means by which the microprocessor-controlled modules in the vehicle communicate with each other. Once the scan tool is connected to the class 2 serial data line through the DLC, the scan tool can be used to monitor each module for diagnostic purposes and to check for diagnostic trouble codes (DTCs). Class 2 serial data is transmitted on a single wire at an average of 10.4 kbps. This value is an average; class 2 uses a variable pulse width modulation to carry data and depending on the message it may operate faster or slower. The bus will float at a nominal 7 volts during normal operation. Each module can pull this lower during the transmission. The bus is not at battery positive voltage or ground potential during normal operation. When the ignition switch is in RUN, each module communicating on the class 2 serial data line sends a state of health (SOH) message every 2 seconds to ensure that the module is operating properly. When a module stops communicating on the class 2 serial data line, for example, if the module loses power or ground, the SOH message it normally sends on the data line every 2 seconds disappears. Other modules on the class 2 serial data line, which expect to receive that SOH message, detect its absence; those modules in turn set an internal DTC associated with the loss of SOH of the non-communicating module. The DTC is unique to the module which is not communicating; for example, when the inflatable restraint sensing and diagnostic module (SDM) SOH message disappears, several modules set DTC U1088. Note that a loss of serial data DTC does not normally represent a failure of the module that set it.

Your best bet ,take it to a qualified repair shop.

Jan 01, 2018 | 2004 Cadillac Deville

1 Answer

Electric Mirrors do not work (Drivers & Passengers)


There are two power wires to the DDM - drivers door module .Both are orange ,one is powered by a fuse DDM fuse 15amp . in the left I/P fuse block , plus LT DOORS 25amp circuit breaker .
Power Mirror System Components
The power mirror system consists of the following components:
• The driver door module--Class 2 module with integrated switches and requires programming when replaced
• The passenger door module--Class 2 module with integrated switches, requires programming when replaced and also contains the RFA receiver
• The power mirror direction switch--Integrated into DDM and is a 4-position momentary switch that provides a signal input to the DDM for up, down, left/extend and right/retract with a mirror switch activation
• The mirror select switch--Integrated into DDM and is a 3-position switch that allows the operator to select the left or right mirror and also a neutral/fold position
• The left outside power mirror--Contains both the vertical and horizontal mirror motors and is serviced as a complete mirror assembly
• The right outside power mirror--Contains both the vertical and horizontal mirror motors and is serviced as a complete mirror assembly
• The body control module--Class 2 module that requires programming when replaced, serves as the power mode master and is the main message handler
• The DDM 10A fuse--Located in the I/P fuse block and is hot at all times
• The PDM 10A fuse--Located in the I/P fuse block and is hot at all times
• The memory switch, if equipped with memory mirrors--Supplied power by the DDM and provides a voltage signal to the DDM upon a switch activation
• The horizontal and vertical position sensors, if equipped with memory mirrors--Supplied a 5-volt and low reference by the DDM/PDM and provide a variable voltage signal to the DDM/PDM that is proportional to mirror position
• The park neutral position switch, if equipped with memory mirrors--Provides transmission gear selection information to the PCM and is used for memory recall and mirror tilt in reverse functions
• The powertrain control module, if equipped with memory mirrors--Class 2 module that requires programming when replaced and provides Class 2 message indicating transmission gear selection
• The driver information center (DIC), if equipped with memory mirrors--Part of the instrument cluster which is a Class 2 module that requires programming when replaced and is used to personalize the memory recall and mirror tilt in reverse functions
• Fold motor in each of the outside mirrors, if equipped with power fold mirrors--Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly
Each of the outside power mirrors contains 2 reversible motors to provide horizontal and vertical movement of the mirror glass. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. If equipped with power folding mirrors, each outside power mirror will contain a reversible fold motor to operate the extend and retract functions. Each of the mirror motors are circuit breaker protected.

Do you know what DTC'S are ? Diagnostic trouble codes
DTC B1544, B1600, or B1605
DTC B1580, B1590, B1610, or B1620
• If DTC B1580 is set by itself, the left horizontal position sensor signal circuit maybe open, shorted to ground or battery
• If DTC B1590 is set by itself, the left vertical position sensor signal circuit maybe open, shorted to ground or battery
• If DTC B1610 is set by itself, the right horizontal position sensor signal circuit maybe open, shorted to ground or battery
• If DTC B1620 is set by itself, the right vertical position sensor signal circuit maybe open, shorted to ground or battery.
• If DTCs B1580 and B1590 are both set, the left 5 volt reference or low reference circuit(s) maybe open, shorted to ground or battery.
• If DTCs B1610 and B1620 are both set, the right 5 volt reference or low reference circuit(s) maybe open, shorted to ground or battery.
Need a factory scan tool to test !
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, observe the mirror horizontal and vertical position parameters in the Driver Door Module (DDM) and Passenger Door Module (PDM) data lists.
Operate both the left and right mirrors through the full range of movements.
Does the scan tool indicate that the left and right mirror horizontal and vertical position parameters are within the specified range?
0.50-4.75 V.
Your best bet , take it to a GMC , Chevy , buick or cadillac dealer

Apr 16, 2017 | 2003 GMC Sierra 2500HD

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