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Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - LOSS OF IGNITION RUN ONLY

TEST ACTION APPLICABILITY
1 Turn the ignition on.
Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be referred to as an ACM.

DETERMINE ACTIVE OR STORED DTC:
ACM - ACTIVE DTC:
Go To 2
ACM - STORED DTC
Go To 9
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.
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2 Turn the ignition off.
Remove and inspect the Airbag Run circuit fuse.
Is the Fuse open?
Yes --> Go To 3
No --> Go To 6		 All
3 Remove the Airbag Run fuse.
NOTE: Check connectors - Clean and repair as necessary.

Measure the resistance of the Fused Ignition Switch Output Run circuit between the Run Fuse and ground.
Is the resistance below 10.0 ohms?
Yes --> Go To 4
No --> Replace the defective fuse.
Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
4
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 connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module connector(s).Measure the resistance of the Fused Ignition Switch Output Run circuit between the ACM connector and ground.Is the resistance below 10K ohms?Yes --> Repair the Fused Ignition Switch Output Run circuit for a short to ground and replace Airbag Run Fuse.Perform AIRBAG VERIFICATION TEST - VER 1  .No --> Go To 5		 All
5
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.RepairReplace the Airbag Control Module in accordance with Service Instructions and replace the Run Only Fuse.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
6 Turn the ignition on.
Measure the voltage of the Ignition Switch Output Run circuit between the Airbag Run circuit fuse and ground.
Is the voltage above approximately 6.0 volts?
Yes --> Go To 7
No --> Repair the open Ignition Switch Output Run circuit. Then reinstall the Ignition Switch Output Run fuse.
Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
7
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 connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module connector(s).
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.
Reinstall the airbag Run fuse.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Fused Ignition Switch Output Run circuit at the Airbag Control Module connector.Is the voltage above approximately 6.0 volts?Yes --> Go To 8No --> Repair the open or high resistance in the Fused Ignition Switch Output Run circuit.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
8
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.RepairReplace the Airbag Control Module in accordance with Service Instructions.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
9 With the DRBIII®, record and erase all DTC's from all Airbag modules.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

With the DRBIII® monitor active codes as you work through the following steps.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE DISTANCE FROM ALL AIRBAGS WHILE PERFORMING THE FOLLOWING STEPS.

Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
IF only stored codes return continue the test until the problem area has been isolated In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Are any ACTIVE DTCs present?
Yes --> Select appropriate symptom from Symptom List.
No --> No problem found at this time. Erase all codes before returning vehicle to customer.		 All
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