Question about 2007 Jeep Liberty Sport

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How to make an after market radio be able to be installed in a jeep libery 2007 without it causing the pcm to cause the bcm to go crazy?

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Most stores that sell radios also sell an adapter harness that makes the install much easier and more compatible to the existing system Just pay attention to where the schematic tells you to make attachments. They also make adapter surround faceplates to make the install appear more "factory"

Posted on Jul 21, 2009

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Posted on Jan 02, 2017

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What does the input sensor on your transmisson of a Pontiac G5 se 2007 do


The speedometer not working wouldn't be caused by an input sensor . The VSS - vehicle speed sensor is a direct input to the PCM , the PCM shares is info over the GMLAN data bus.
Speedometer
The instrument panel cluster (IPC) displays the vehicle speed based on GMLAN serial data message from the body control module (BCM). The BCM receives vehicle speed data from the powertrain control module (PCM)/engine control module (ECM) via the GMLAN serial data circuit. The speedometer will default to 0 km/h (0 mph) if:
?€¢
The PCM/ECM detects a malfunction in the vehicle speed sensor circuit.


?€¢
The BCM detects a loss of GMLAN communications with the PCM/ECM.


?€¢
The IPC detects a loss of GMLAN communications with the BCM.


The only way to diagnose these problems is with a factory scan tool , this will check inputs an outputs at the PCM an BCM to the instrument cluster . This avoids guessing an playing the parts game. Your best bet would be to take your vehicle to a qualified repair shop .
Same thing with trans not shifting out of first gear , could be a shift solenoid ! Does it shift manually , moving gear selector through the gears ?

Jul 18, 2016 | 2007 Pontiac G5

1 Answer

2002 chevy malibu cranks wont start. fuel and temp gauge dont work. radio reads cal


Cranks won't start , Did you check for spark ,fuel pressure ?
Radio Setup .Will the vehicle communicate with a scan tool ? Fuel an temp gauges not working are probably bad step motors inside the instrument cluster that controls the gauges . Where do the gauges read 0 or something else ?
Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the PCM. The body control module (BCM) receives a class 2 message from the PCM indicating the engine coolant temperature. The BCM converts the engine coolant temperature into a percent gage deflection. The IPC receives a message from the BCM via the serial peripheral interface (SPI) indicating the requested gage position. The engine coolant temperature gage defaults to 38°C (100°F) or below if:
?€¢
The PCM detects a malfunction in the engine coolant temperature sensor circuit.


?€¢
The BCM detects a loss of class 2 communications with the PCM.


?€¢
The IPC detects a loss of SPI communications with the BCM.

Fuel Gage
The IPC displays the fuel level as determined by the PCM. The body control module (BCM) receives a class 2 message from the PCM indicating the fuel level percent. The BCM converts the fuel level percent into a percent gage deflection. The IPC receives a message from the BCM via the serial peripheral interface (SPI) indicating the requested gage position. The fuel gage defaults to E (empty) if:
?€¢
The PCM detects a malfunction in the fuel level sensor circuit.


?€¢
The BCM detects a loss of class 2 communications with the PCM.


?€¢
The IPC detects a loss of SPI communications with the BCM.

When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.
DTC P0462
The fuel level sensor changes resistance based on fuel level. The PCM monitors the signal circuit of the fuel level sensor in order to determine fuel level. When the fuel tank is full, the sensor resistance is high and the PCM senses a high signal voltage. When the fuel tank is empty, the sensor resistance is low and the PCM senses a low signal voltage. The PCM uses the signal circuit of the fuel level sensor in order to calculate the total remaining fuel in the tank. The PCM sends the fuel level percent via the class 2 serial data circuit to the body control module (BCM). The BCM converts this data and sends a fuel gage percent deflection to the IPC via the serial peripheral interface (SPI) in order to control the fuel gage. The fuel level information is also used for misfire and EVAP diagnostics.

Have
For the DE 100 series radio, complete the following procedure, using a scan tool, in order to properly set up communication:

  1. At the Main Menu screen, select: Diagnostics.
  2. At the Vehicle Identification screen, select the following options:
  3. ?€¢
    Model Year


    ?€¢
    Passenger Car

  4. At the System Selection Menu screen, select: Body.
  5. At the Vehicle Identification screen, select the Platform type.
  6. At the Body screen, select: Radio.
  7. At the Radio screen, select: Special Functions.
  8. At the Special Functions screen, select: Radio Setup.
  9. At the Radio Setup screen, press ENTER. The following test will set up a new or existing radio.
  10. Select one of the following options:
  11. ?€¢
    USA/Canada


    ?€¢
    Export

  12. Press the ENTER key.
  13. Verify that the scan tool displays "Test in Progress."
  14. Verify that the scan tool displays "Test Completed Successfully."
  15. Press EXIT on the scan tool.
Important: The radio set up will configure the following systems:
?€¢
LEARN VIN


?€¢
Diagnostic Trouble Codes


?€¢
Class 2 Radio Messages


?€¢
Country Code


?€¢
Chime Volume


?€¢
Chime Level


?€¢
12/24 Hour Clock

Without learning the VIN, the radio will display a locked message (LOC).
The radio setup procedure will also clear the following messages:
?€¢
CAL


?€¢
CAL ERR


?€¢
CALIBRATE

May 29, 2016 | Cars & Trucks

1 Answer

Hi it is me again with the 2007 chevy tahoe i change the fuel pump control module and the vehicle will not start when i turn on the key the check light staying on code p0602 what causing that?


P0602 CHEVROLET P0602 CHEVROLET - Powertrain Control Module Programming Error Repair Importance Level: 3/3 Repair Difficulty Level: 3/3 alt="What does this mean?"> Share alt="Share on Facebook"> alt="Share on Twitter"> alt="Share on Linkedin"> alt="Share on Google Plus"> alt="AutoCodes.com"> alt="Print Version"> alt="PDF Print"> alt="Share Code"> 0 alt="P0602 Chevrolet Comments"> ' Add Comment alt="Close Selection"> http://www.autocodes.com/p0602_chevrolet.html Forum Code Possible causes - Powertrain Control Module (PCM) not programed
- PCM program
- Faulty PCM
- Wrong PCM
alt="What does this mean?"> What does this mean? Possible symptoms - Engine Light ON (or Service Engine Soon Warning Light) P0602 Chevrolet Description This diagnostic trouble code (DTC) indicates that the Powertrain Control Module (PCM) internal EEPROM is not flashed with any vehicle software. If you install a service PCM and do not flash the EEPROM, the engine will not run. This DTC indicates that an un-flashed PCM causes the engine cranks but will not run situation.


Read more: http://www.autocodes.com/p0602_chevrolet.html#ixzz3xAfHr3TX

and a video


2006 08 Chevy Cobalt Transmission Control Module FIX Easy BCM Problem...

Jan 13, 2016 | Cars & Trucks

2 Answers

I have a 2007 patriot and the radiator cooling fan won't shut off. how do I fix it.


Funny usually it wont come on.
I should ask a question first is it on when the car is cold? just turn the key to on before you start the engine when it is cold and lift the hood to check.

If not then there could be lots of things. Engine always hot, worn water pump or thermostat not working properly, bad control relay.

You can check the control relay which is usually mounted on the lower rad support in between the grill and the rad. You should be able to see the relay it has fins on it.

Mar 06, 2015 | 2007 Jeep Patriot Sport

1 Answer

Service vehicle soon like comes on after 25 minutes of running then it locks out my radio and causes the security light to also come on. I've had it on 3 different scopes & was told the codes were


I don't know who told you that , a semi- clogged catalytic will cause a low power issue an maybe a couple of DTC'S diagnostic trouble codes P0420 - P0430 ,Has nothing to do with the alarm system ! Do you mean Service vehicle soon or SERVICE ENGINE SOON ?
SERVICE VEHICLE SOON
The IPC illuminates the SERVICE VEHICLE SOON indicator in the message center when the PCM or the BCM detects certain non-emissions related malfunctions. The IPC receives a class 2 message from the PCM or from the BCM requesting illumination. What problem are you having with alarm system ? If you have a starting issue it's the Anti-Theft system not alarm system . The alarm would go off if you vehicle was broke into . I don't know what shop you took it to but did you try a dealer ?

How to Diagnose Codes P0420 P0430

Feb 04, 2015 | 2002 Buick Rendezvous

1 Answer

U110C lost fuel level message. is this something to do with the pcm


Hi Anonymous, Im glad to help!

The U110C is a BUS Message and usually has to do with both PCM and BCM, because its a lose of BUS Signal between the PCM and the BCM.

FIRST THING TO TRY:
The first thing I would try is remove the negative battery cable for 20 seconds then replace it. NEXT: Start the engine several times then let idle for 10 to 20 minutes then start it several more times and if the code doesn't return and the check engine light stays out, simple drive it for awhile like you normally would. If the code come right back, below is some common problems.

COMMON CAUSES of U110C:
(1) Communication with BCM is lost / See if you can communicate with the BCM.
(2) PCI Bus Circuit open between PCM and BCM / Check the positive and negative bus signal at both the PCM and BCM.
(3) BCM
(4) PCM
(5) Fuel Level Bus Message is missing

Obviously, all these issues must be tested to see which one is causing the problem. BUT first try the battery cable removal and see what happens.

Let me know the out come and I'll try to help further.
Hope this helps and have an awesome day!

Sep 28, 2014 | 2005 Chrysler Pacifica

1 Answer

Have a 1998 dodge minivan,PCM,was replaced. now door locks and rear window wiper comes on by itself while driving or parked. gas gauge will get stuck on empty line off and on. we were told can be BCM, is...


If it has something to do with the BCM , there would probably have DTC'S - diagnostic trouble codes stored , An just replace a BCM would cause more problems , same with PCM's ! These modules need to be configured and programmed . Also ,without testing no one could say for sure that the BCM is bad . That would be a guess ! Door locks locking an unlocking could be a bad switch input to the BCM . Watch this video plus part 2 and 3
Door Locks Go Crazy 1

May 04, 2017 | 1998 Dodge Caravan

1 Answer

Is there a relay that controls the courtesy features of the car such as courtesy lighting and radio? I have checked all fuses, but I still am not able to get these features active on the car.


YOUR BCM OR PCM ALSO CONTROLS THE COURTESY FEATURES.IF THE BCM OR PCM GO BAD.IT WILL CAUSE PROBLEMS WITH RADIO AND INTERIOR LIGHTS.

Oct 31, 2009 | 2002 Mazda MPV

1 Answer

2007 GMC Yukon wont start....


Ok supper Dave , let's get this stright , when you turn the key to start the vehicle , what happens ? The starter spins the engine or doesn't spin the engine ? This would be a no crank no start condition . if the engine does spin an doesn't start an run this is a crank no start condition . Now which is it ? The factory radio is hooked to the serial data communication network , did you or who ever installed the aftermarket radio use a interface module ? Are you familiar with the electronics on this vehicle ? BCM - body control module , low current inputs from the ignition switch which determine what mode to put the vehicle in ?

Case 4 Data Bus Issues

The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle's body functions. The BCM is wired to the GMLAN high speed serial data buss and the GMLAN low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine control module (ECM)/powertrain control module (PCM) and theft deterrent module (TDM) to communicate without the BCM providing the gateway function.

Power Mode Master
This vehicles body control module (BCM) functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

Sorry but I am a GM Tech . have been for over thirty years , Cadillac , Buick an Chevy .audio buds think it's something else. Your audio buds don't have a clue ? When change something you better well know what your messing with. .

Apr 11, 2017 | 2007 GMC Yukon

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