Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURES - NO RESPONSE FROM ACM
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Ensure that the battery is fully charged.
WARNING:
TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module harness connector (C2 connector on premium). Connect the appropriate Load Tool ACM Adapter to the ACM connector. Turn the ignition on and then reconnect the Battery. Using a 12-volt test light connected to ground, probe the Fused Ignition Switch Output Run Circuit and the Fused Ignition Switch Output Run/Start Circuit.
NOTE:
One open circuit will not cause a NO RESPONSE condition. Is the test light illuminated on both circuits? Yes --> Go To 2 No --> Repair the Fused Ignition Switch Output Run and Fused Ignition Switch Output Run/Start circuits for an open. Replace the fuse(s) if necessary. 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:
TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module harness connector (C2 connector on premium). 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? Yes --> Go To 3 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. |
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| 3 |
NOTE:
Ensure there is PCI bus communication with other modules. If not, refer to the PCI BUS COMMUNICATION FAILURE SYMPTOM and repair as necessary.
WARNING:
TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module harness connector (C2 connector on premium).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 ACM connector.Observe the voltage display on the DRB Lab Scope.Does the voltage pulse from 0 to approximately 7.5 volts?Yes --> 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 .No --> Go To 4 |
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| 4 |
WARNING:
TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING. Disconnect the Airbag Control Module harness connector (C2 connector on premium).Connect the appropriate Load Tool ACM Adapter to the ACM connector.Disconnect the BCM C2 harness connector.Measure the resistance of the PCI bus circuit between the ACM connector and the BCM C2 connector.Is the resistance below 5.0 ohms?Yes --> Replace the Body Control Module in accordance with the service information.Perform AIRBAG VERIFICATION TEST - VER 1 .No --> Repair the PCI Bus circuit for an open.Perform AIRBAG VERIFICATION TEST - VER 1 . |
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