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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 - START

TEST ACTION APPLICABILITY
1 Ensure the battery is fully charged.
Turn the ignition on.
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 14
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.
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2 Turn Ignition off.
Remove and inspect the Airbag Run-Start Fuse.
NOTE: Check connectors - Clean and repair as necessary.

Is the Fuse open?
Yes --> Go To 3
No --> Go To 11		 All
3 Measure the resistance of the Fused Ignition Switch Output Run-Start circuit between the Airbag Run - Start Fuse and ground.
Is the resistance below 10.0 ohms?
Yes --> Go To 4
No --> Replace Airbag Run - Start Fuse.
Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
4 Is this vehicle equipped with OCS?
Yes --> Go To 5
No --> Go To 9		 All
5
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Occupant Classification Module connector
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the Fused Ignition Switch Output Run-Start circuit between the Airbag Run - Start Fuse and ground.Is the resistance below 10.0 ohms?Yes --> Go To 6No --> Replace the shorted Fused Ignition Switch Output Circuit and Airbag Run - Start Fuse.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
6 Inspect the passenger OCS wiring to determine if the Bladder Repair Kit has been installed.
NOTE: Check connectors - for tamper evident material.

Tamper evident material is installed onto the Kit harness to keep the kit components together in shipping and installation.
NOTE: The Bladder and Cushion Service Kit component are calibrated together and should not be disconnected.

If the OCM harness connector can be easily disconnected the OCS is original equipment.
Is the passenger seat original equipment?
Yes --> Go To 7
No --> Go To 8		 All
7
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT CLASSIFICATION 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.
WARNING: TO AVOID PERSONAL INJURY OR DEATH ON VEHICLES EQUIPPED WITH THE OCCUPANT CLASSIFICATION SYSTEM (OCS), ONLY THE OCCUPANT CLASSIFICATION MODULE (OCM) AND THE PASSENGER SEAT BLADDER AND CUSHION SERVICE KIT ARE THE ONLY PARTS SERVICED.
If there are no possible causes remaining, view repair.Repair:Replace the OCM in accordance with service information. Then perform the Verification Required test to remove DTC created by the repair.Perform OCS 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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8
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT CLASSIFICATION 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.
WARNING: TO AVOID PERSONAL INJURY OR DEATH ON VEHICLES EQUIPPED WITH THE OCCUPANT CLASSIFICATION SYSTEM (OCS), ONLY THE OCCUPANT CLASSIFICATION MODULE (OCM) AND THE PASSENGER SEAT BLADDER AND CUSHION SERVICE KIT ARE THE ONLY PARTS SERVICED.
Follow all service information for replacing the Service Kit and performing the Verification Required test over again.
NOTE: the following repair will cause Active DTCs to be set in the OCM, perform the Verification Required test to remove DTCs created by this repair.
If there are no possible causes remaining, view repair.Repair:Replace the OCS Bladder Repair Kit in accordance with service information. Then perform the Verification Required test to remove DTC created by the repair.Perform OCS 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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9
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.
Disconnect the Airbag Control Module connector
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM Adaptor to the ACM connector(s).Measure the resistance of the Fused Ignition Switch Output Run-Start circuit between the Airbag Run - Start Fuse and ground.Is the resistance below 10K ohms?Yes --> Go To 10No --> Repair the Fused Ignition Switch Output Run - Start circuit short to ground and Run-Start fuse.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
10
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 fuse.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
11 Turn the ignition on.
Measure the voltage of the Ignition Switch Output circuit at the Airbag Run - Start fuse.
Is the voltage above approximately 6.0 volts?
Yes --> Go To 12
No --> Repair the open Ignition Switch Output Run - Start circuit.
Perform AIRBAG VERIFICATION TEST - VER 1  .
NOTE: Reinstall the fuse after performing this test.
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12
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 Airbag Load Tool ACM Adaptor to the Airbag Control Module connector.Reinstall the previously removed Airbag Run-Start 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-Start Circuit between the ACM Adaptor connector ground.Is the voltage above approximately 6.0 volts?Yes --> Go To 13No --> Repair open Fused Ignition Switch Output Run-Start circuit.Perform AIRBAG VERIFICATION TEST - VER 1  .		 All
13
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
14 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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