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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 AIRBAG CONTROL MODULE >> Diagnostic Procedure

Diagnostic Procedure

*NO RESPONSE FROM AIRBAG CONTROL MODULE - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1
NOTE: Check the IPM for DTC's. If DTC's are present, go to the appropriate category and perform the DTC.
Ensure that the battery is fully charged.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module harness connector.Connect the appropriate Load Tool ACM Adapter to the ACM connectorTurn the ignition on and then reconnect the Battery.Using a 12-volt test light connected to ground, probe the ORC Run Driver Circuit and the ORC Run/Start Driver Circuit at the Airbag Control Module connector.
NOTE: One open circuit will not cause a NO RESPONSE condition.
Is the test light illuminated on both circuits?
  1. Yes: Go To 2
  2. No: Repair the ORC Run Driver and the ORC Run/Start Driver circuits for an open.

    Perform AIRBAG VERIFICATION TEST VER-1 .

NOTE: When reconnecting airbag system components, the ignition must be turned off and the battery must be disconnected.
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2 Ensure that the battery is fully charged.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

Disconnect the Airbag Control Module harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
NOTE: Make sure test light is connected to the Battery positive terminal.

Is the test light illuminated?
  1. Yes: Go To 3
  2. No: Repair the Ground circuit for an open.

    Perform AIRBAG VERIFICATION TEST VER-1 .


When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.		 All
3
NOTE: Ensure there is PCI bus communication with other modules. If not, refer to the Symptom: *PCI BUS COMMUNICATION FAILURE  symptom and repair as necessary.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Airbag Control Module harness connector.Connect the appropriate Load Tool ACM Adapter to the ACM connector.Turn the ignition on and then reconnect the Battery.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 Airbag Control Module connector.Observe the voltage display on the DRBIII® Lab Scope.Does the voltage pulse from 0 to approximately 7.5 volts?
  1. Yes: Go To 4
  2. No: Repair the PCI Bus circuit for an open.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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4 If there are no possible causes remaining, view repair.
  1. Repair: Replace the Airbag Control Module in accordance with the Service information. WARNING: Make sure the battery is disconnected and wait 2 minutes before proceeding.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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