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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 >> Communication >> Symptom: *NO RESPONSE FROM INSTRUMENT CLUSTER >> Diagnostic Procedure

Diagnostic Procedure

*NO RESPONSE FROM INSTRUMENT CLUSTER - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII®, enter Body then Body Computer.
NOTE: If communications can be established, check for any cluster wake up circuit related DTCs. If any are set, perform those related DTCs before proceeding.

Was the DRBIII® able to I/D or communicate with the BCM?
  1. Yes: Go To 2
  2. No: SYMPTOM LIST for problems related to no communication with the BCM.

    Perform BODY VERIFICATION TEST VER-1 .

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2 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Measure the voltage between the Fused B(+) circuit and ground.
Is the voltage below 10.5 volts?
  1. Yes: Repair the Fused B(+) circuit for an open. If the fuse is open make sure to check for a short to ground.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 3
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3 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between ground and the Ground circuit.
Is the resistance above 5.0 ohms?
  1. Yes: Repair the Ground circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 4
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4
NOTE: Ensure there is PCI Bus communication with other modules on the vehicle before proceeding. If not, SYMPTOM LIST from the menu and repair as necessary.
Disconnect the Instrument Cluster C1 harness connector.Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and black test probes.Connect the scope input cable to the channel one connector on the DRB. Attach the red and black leads and the cable to probe adapter to the scope input cable.With the DRBIII® select Pep Module Tools.Select lab scope.Select Live Data.Select 12 volt square wave.Press F2 for Scope.Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again when complete.Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus circuit in the Instrument Cluster connector.Turn the ignition on.Observe the voltage display on the DRBIII® Lab Scope.Does the voltage pulse from 0 to approximately 7.5 volts?
  1. Yes: Go To 5
  2. No: Repair the PCI Bus circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

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5 Turn the ignition off.
Reconnect the Instrument Cluster C1 harness connector.
Disconnect the BCM C4 harness connector.
Measure the amperage between the Instrument Cluster Wake Up Signal circuit and ground.
Does the amperage measure approximately 5uA (5 microampere)?
  1. Yes: Replace the BCM in accordance with the Service Information.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 6
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6 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Instrument Cluster Wake Up Signal circuit.
Is the resistance above 5.0 ohms?
  1. Yes: Repair the Instrument Cluster Wake Up Signal circuit for an open.

    Perform BODY VERIFICATION TEST VER-1 .

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

    Perform BODY VERIFICATION TEST VER-1 .

 All
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