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Home >> Chrysler >> 2004 >> Pacifica AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Diagnostic Procedures - Communication, Door Ajar, Electrically Heated Systems, Exterior Lighting >> Exterior Lighting >> Symptom: BACKUP LAMP OUTPUT SHORT- BCM >> Diagnostic Procedure

Diagnostic Procedure

BACKUP LAMP OUTPUT SHORT-BCM - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1 Turn the ignition on. Engine OFF.
With the DRBIII®, clear all BCM DTC's.
Place the transmission in reverse.
With the DRBIII®, read the DTC information.
Does the DRBIII® read: Backup Lamp Output Short?
  1. Yes: Go To 2
  2. No: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.

    Perform BODY VERIFICATION TEST VER-1 .

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2 Turn the ignition on. Engine OFF.
Place the transmission in reverse.
Using a 12-volt test light connected to ground, check the Backup Lamp Output circuit.
Does the test light illuminate brightly?
  1. Yes: Replace the Backup Lamp.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 3
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3 Turn the ignition off.
Disconnect the Body Control Module C2 harness connector.
Disconnect both rear tail lamp harness connector.
Measure the resistance of the Backup Lamp Driver circuit and ground.
Is the resistance below 5.0 ohms?
  1. Yes: Repair the Backup Lamp Driver circuit for a short to ground.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Replace the Body Control Module.

    Perform BODY VERIFICATION TEST VER-1 .

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