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Home >> Chrysler >> 2004 >> Pacifica AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Diagnostic Procedures - HVAC, Ignition Power Accessory, Instrument Cluster, Interior Lighting, Navigation, Overhead Console, Power Door Locks/RKE >> Instrument Cluster >> Symptom: PWM DIMMING OUTPUT FAILURE >> Diagnostic Procedure

Diagnostic Procedure

PWM DIMMING OUTPUT FAILURE - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1
NOTE: This DTC will set if the Panel Lamps Driver circuit is open to all dimmed components.
Turn the ignition off.Disconnect the Instrument Cluster C1 harness connector.Using the wiring diagram/schematic as a guide, inspect the wiring and connectors related to the Panel Lamps Driver circuit for an open circuit condition.Was a Panel Lamps Driver circuit open condition found?
  1. Yes: Repair the Panel Lamps Driver circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 2
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2 Turn the ignition off.
All Disconnect the Instrument Cluster C1 harness connector.
Measure the voltage between the Panel Lamps Driver circuit and ground.
Is there any voltage present?
  1. Yes: Repair the Panel Lamps Driver circuit for a short to voltage.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 3
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3 Turn the ignition on, with the DRBIII®, erase DTCs.
Turn the ignition off.
Using the wiring diagram/schematic as a guide, disconnect one of the dimmed components.
Turn the ignition on, with the DRBIII®, read DTCs.
If this DTC resets, repeat the above procedure with each dimmed component on the Panel Lamps Driver circuit.
Was a dimmed component found to be shorted, allowing the DTC to be cleared?
  1. Yes: Replace the appropriate dimmed component in accordance with the Service Information.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 4
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4 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors related to the Panel Lamps Driver circuit for a short to ground condition.
Was a Panel Lamps Driver circuit short to ground condition found?
  1. Yes: Repair the Panel Lamps Driver circuit for a short to ground.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Replace the Instrument Cluster in accordance with the Service Information.

    Perform BODY VERIFICATION TEST VER-1 .

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