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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: LICENSE PLATE LAMP OUTPUT OPEN-IPM >> Diagnostic Procedure

Diagnostic Procedure

LICENSE PLATE LAMP OUTPUT OPEN-IPM - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII®, erase the IPM DTC's.
Turn the License Plate Lamp on.
With the DRBIII®, read the IPM DTC's.
Does the DRBIII® read: License Plate Lamp Output Open?
  1. Yes: Go To 2
  2. No: Go To 5
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2 Turn the ignition off.
Disconnect the License Plate Lamp harness connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?
  1. Yes: Go To 3
  2. No: Repair the Ground circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

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3 Turn the ignition off.
Disconnect the License Plate Lamp.
Disconnect the IPM C9 harness connector.
Measure the resistance of the License Plate Lamp Driver circuit.
Is the resistance below 10.0 ohms?
  1. Yes: Go To 4
  2. No: Repair the License Plate Lamp Driver circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

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4 Turn the ignition off.
Disconnect the License Plate Lamp harness connector.
Using a 12-volt test light connected to ground, check the License Plate Lamp Driver circuit in the License Plate Lamp harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Turn the License Plate Lamp on.
Does the test light illuminate brightly?
  1. Yes: Replace the License Plate Lamp Bulb.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Replace the Integrated Power Module.

    Perform BODY VERIFICATION TEST VER-1 . All

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5 Turn the ignition off.
NOTE: Visually inspect the related wiring harness and circuits. Look for any chafed, pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
NOTE: Refer to any Technical Service Bulletins (TSB) that may apply.

Were any problems found?
  1. Yes: Repair as necessary.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Test Complete.
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