Question about 2004 Mercury Montery

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The front fan has quite working, there is nothing wrong with the fan itself, diagnostics said it was the smart box, which we tried and didn't help, we next have replaced the central control box (not sure is that is the correct name), still have the problem with only the front fan

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Have you all check the blower resistor, check to see if you have power going to it then if you have power going to blower motor, if no power going to motor and have power going to it replace Napa part # br334. hope this was very helpful.

Posted on Dec 13, 2009

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Posted on Jan 02, 2017

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2 Answers

Why wont the cruise control work on a 2005 ford taurus but the cruise light comes on


The first thing to check is the tail lights. The cruise control will not work if any lights are out. Changing to LED tail lights also causes the cruise to not work.

Apr 06, 2014 | 2005 Ford Taurus

1 Answer

2005 Taurus headlight on chime does not work


No other warning chimes work or just the headlamps ?
Warning Devices The warning device system consists of the following components:
  • Smart junction box (SJB)
  • Instrument cluster
  • Restraint control module (RCM)
  • Inspection and Verification
    1. Verify the customer concern.
    1. Visually inspect the following for obvious signs of mechanical or electrical damage.

      Visual Inspection Chart Mechanical Electrical
      • Switch(es)
      • Instrument cluster
      • Smart junction box (SJB)
      • Battery junction box (BJB) fuse(s):
        • 1 (60A)
        • 3 (60A)
      • SJB fuse(s):
        • 22 (15A)
        • 32 (10A)
        • 33 (15A)
      • Circuitry
    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 concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel 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 operarting manual.
    1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
      • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
      • No response/not equipped for the instrument cluster, refer to Section 413-01 . For smart junction box (SJB), 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 instrument cluster and for the SJB.
    1. If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index or the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index to continue diagnostics.
    1. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart.
    Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 SJB is Defective SJB INSTALL a new SJB. REFER to Section 419-10 . B1352 Ignition Key-In Circuit Failure SJB Go To Pinpoint Test B . B1577 Lamp Park Input Circuit Short to Battery SJB Go To Pinpoint Test E . C1167 Park Brake Actuator Assembly Switch Released Circuit Short to Ground
    • The head/parking lamps ON chime is inoperative
    • Headlamp switch
    • Circuitry
    • LF door open warning switch
    • Smart junction box (SJB)
    • Instrument cluster
    • Go To Pinpoint Test C .
  • your best bet , take it to a qualified repair shop .
  • There is no chime module just for the headlamp on warning .

Feb 18, 2018 | 2006 Ford Taurus

1 Answer

My Break, ABS and Trac warning lights all come on at the same time. I can shut the engine down and restart the issue goes away. I t seems to be happening more frequently. My mechanic found nothing wrong...


Nothing wrong. Doesn't that seem strange to you

The ABS & Trac came on because that system has issues

There may be stored data, if not a code present

The mechanic has to component test to find the problem

These guys spend too much time with a scan tool & I
think some of them are waiting for it to tell them something

Doesn't work that way. If everything goes as it should, the
scanner shows what the computer sees,that's all,& that can
be a lot,but you have to move on & use different skills that
not everyone has learned yet apparently

Try another shop

That really isn't a diagnostic test etc,just looking at data
stream,if they see nothing out of range they quit

That doesn't help you any,the problem is still there,intermitent
maybe, but there.

Jun 26, 2011 | 2001 Ford Windstar

1 Answer

2001 durango r/t everything is wrong the raadio quit working the interior lights dont work the trip gauge resets itself the gas gauge dont work half the time the rear defrost dont work the drivers side...


Try looking at the fuses in the fuse box some of them might be blown and if they are then you probly have short somewhere in your car (replaceing the blown fuses might help)

Dec 26, 2010 | 2000 Dodge Durango

1 Answer

My 2006 lincoln zephyr's front blinkers quit working and the drivers side front parking light stays on after you shut the engine off.I tried all the fuses I was told to check. I am afraid the battery is...


covered under my warranty. Do you have extended warranty ? Regular warranty was up long time ago . You mite check anyway. This is a electronic problem , SJB - smart junction box is a electronic module that controls the lights . Principles of Operation
The smart junction box (SJB) monitors the headlamp switch position by sending multiple voltage reference signals to the headlamp switch. When the headlamp switch is in any given position, that input signal is routed to ground.
When the SJB receives an input from the headlamp switch indicating a request for the parking lamps, the SJB energizes the parking lamp relay, which supplies voltage to the exterior lamps.

Inspection and Verification
  1. Verify the customer concern.
  1. Visually inspect the following for obvious signs of mechanical or electrical damage.


Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Smart junction box (SJB) fuse 4 (15A) (parking lamps)
  • SJB
  • Rear lamp assembly
  • Bulb(s)
  • Circuitry

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
NOTE: Make sure the headlamp switch is in the OFF position.
NOTE: Make sure the multifunction switch is in the LOW BEAM position.
  1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) 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 the diagnostic tool responds with:
    • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for SJB, refer to Section 419-10 .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the SJB.
  1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .
Principles of Operation
The smart junction box (SJB) monitors the multifunction switch position by sending multiple voltage reference signals to the multifunction switch. When the multifunction switch is in the LH or RH TURN positions, or the hazard lamp switch is engaged, that input signal is routed to ground.
When the SJB receives a request for a turn signal or hazard lamps, the SJB supplies voltage to the appropriate turn lamps.

Jul 12, 2017 | 2006 Lincoln Zephyr

1 Answer

Tail lights wont come one


Do you know what a smart junction box is ? This fords BCM - body control module .( computer )
The smart junction box (SJB) monitors the headlamp switch position by sending multiple voltage reference signals to the headlamp switch. When the headlamp switch is in any given position, that input signal is routed to ground.
When the SJB receives an input from the headlamp switch indicating a request for the parking lamps, the SJB energizes the parking lamp relay, which supplies voltage to the exterior lamps.

Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Smart junction box (SJB) fuse 4 (15A) (parking lamps)
  • SJB
  • Rear lamp assembly
  • Bulb(s)
  • Circuitry

NOTE: Make sure the headlamp switch is in the OFF position.
NOTE: Make sure the multifunction switch is in the LOW BEAM position.
  1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) 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 the diagnostic tool responds with:
    • CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for SJB, refer to Section 419-10 .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the SJB.
  1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .


Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1342 ECU is Faulted SJB CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new SJB. REFER to Section 419-10 . B1578 Lamp Park Input Circuit Short to Ground SJB Go To Pinpoint Test R .
Symptom Chart
Symptom Chart Condition Possible Sources Action
  • No communication with the smart junction box (SJB)
  • Circuitry
  • SJB
  • REFER to Section 419-10 .
  • One or more parking, rear or license plate lamps is inoperative
  • Fuse
  • Circuitry
  • Rear lamp assembly
  • SJB
  • Go To Pinpoint Test Q .
  • The parking, rear or license plate lamps are on continuously
  • Circuitry
  • SJB
  • Go To Pinpoint Test R .
Do you know how to do automotive electrical circuit testing ?

Pinpoint Test Q: One Or More Parking, Rear or License Plate Lamps Is Inoperative
Normal Operation Voltage is supplied to the smart junction box (SJB) from the battery junction box (BJB) fuse 23 (60A) through circuit SBB23 (WH/RD).
When the headlamp switch is placed in the PARKING LAMPS ON position, the SJB provides a ground for the parking lamp relay coil (internal to the SJB). When the parking lamp relay is energized, voltage is sent through circuit CBP08 (GY/YE) to the rear and front parking lamps. Ground is provided to the rear parking and license plate lamps through circuit GD171 (BK/GY). Ground is provided to the front parking and side marker lamps through circuits GD121 (BK/GY), GD121 (BK/RD), GD121 (BK/YE), GD121 (GY/YE), GD123 (BK/YE) or GD123 (BK/GY).
    Possible Causes
  • Fuse
  • Circuit CBP08 (GY/YE) open
  • Circuit GD121 (BK/GY) open
  • Circuit GD121 (BK/RD) open
  • Circuit GD121 (BK/YE) open
  • Circuit GD121 (GY/YE) open
  • Circuit GD123 (BK/YE) open
  • Circuit GD123 (BK/GY) open
  • Circuit GD171 (BK/GY) open
  • Circuit SBB23 (WH/RD) open
  • Rear lamp assembly
  • SJB

Apr 25, 2017 | 2006 Ford Fusion

2 Answers

Speedometer has quit working.


The voltage of your car's battery and the surge from the other car's battery when you jumped might have been enough to blow the fuse on the electronic speed sensor, or the sensor itself, try locating the fuse box and search for anything to do with sensors or so, if there's nothing wrong there it's the sensor itself, and you'll need to take it to a workshop.

Mar 09, 2009 | 2002 Chrysler Town & Country

2 Answers

Heater/ac fan doesn't work


i would first check the connections on the back of the fan blower assembly for lose fit. make sure the coupler is tight. if the problem persist, the motor itself may be dead. Click here for blower motor prices and inventories.

Mar 01, 2009 | 2002 Chevrolet S-10

2 Answers

2006 honda Odyssey front fan quit


I'm not sure where you are based, but with most new vehicles there is a 3 year or 60,000 mile warranty, so it should be covered under that if there is a fault. I recommend taking it to the dealer if the warranty is still current, otherwise if it is not you could check through the fuses to make sure it's not just a blown fuse, maybe check the wiring to the fan motor under the dash to make sure it's still plugged in and not damaged, and (with the key on and the heater fan switched on) check for power to the fan motor with a testlight. If there is power there then the fan motor is faulty, if not then there is fault with the control system, but that is probably about as far as you could go at home. Obviously if the fan is faulty you could replace it yourself if it's easily accessible. Any further faults would need a Honda dealer or good auto electrician to diagnose.

Hope this helps,
Mark.

Nov 02, 2008 | 2006 Honda Odyssey

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