Air Bag Indicator Circuit Malfunction (Passenger)
Air Bag Indicator Circuit Malfunction (Passenger)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The PASSENGER AIR BAG ON/OFF indicators, located in the center of instrument panel (I/P), are used to notify the driver when the passenger presence system (PPS) has enabled or disabled the passenger instrument panel air bag. When the ignition is turned ON, the PPS module is supplied with voltage and commands the PASSENGER AIR BAG ON/OFF indicators to illuminate for 5 seconds. The PPS module conducts tests on the PPS components and circuits while the PASSENGER AIR BAG ON/OFF indicators are illuminated. If no malfunctions are detected, the PPS module will illuminate the PASSENGER AIR BAG indicator ON or OFF, depending on the status of the PPS. If a malfunction is detected, the PPS module will store a DTC, default the PPS to the OFF state, and communicate with the SDM that a DTC has been set. The SDM will request the IPC to illuminate the AIR BAG indicator to notify the driver of a PPS malfunction.
Reference Information
Schematic Reference
SIR Schematics ([1][2]Air Bag Systems)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Description and Operation
SIR System Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
With the passenger seat occupied and unoccupied, the passenger air bag on/off indicator should change states within 5 seconds.
Circuit/System Testing
Note: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
* Inflatable restraint I/P module indicator passenger air bag on/off indicator.
* Inflatable restraint I/P module indicator passenger air bag on/off indicator wiring harness.
1. Ignition OFF, disconnect the harness connector at the inflatable restraint I/P module indicator passenger air bag on/off indicator.
2. Ignition OFF, test for less then 5 ohms between the ground circuit terminal 2 and ground.
• If greater then the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 4 and ground.
• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Connect a test lamp between the control circuit terminal 3 and the ignition circuit terminal 4.
5. With the passenger seat unoccupied, the test lamp should not illuminate.
• If the test lamp illuminates, test the control circuit for a short to ground. If the circuits test normal, replace the PPS module.
6. With the passenger seat occupied, the test lamp should illuminate.
• If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the PPS module.
7. Connect a test lamp between the control circuit terminal 1 and the ignition circuit terminal 4.
8. With the passenger seat occupied, the test lamp should not illuminate.
• If the test lamp illuminates, test the control circuit for a short to ground. If the circuits test normal, replace the PPS module.
9. With the passenger seat unoccupied, the test lamp should illuminate.
• If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the PPS module.
10. If all circuits test normal, test or replace the inflatable restraint I/P module indicator passenger air bag on/off indicator.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Inflatable Restraint Instrument Panel Module Indicator Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for PPS module replacement, setup, and programming