Passenger Presence System Indicator Circuit Malfunction
Passenger Presence System Indicator Circuit Malfunction
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The PASSENGER AIR BAG ON/OFF indicators are used to notify the driver when the passenger presence system (PPS) has enabled or disabled the instrument panel (I/P) inflator module. When the ignition is turned ON, the PPS module is supplied with voltage and illuminates both PASSENGER AIR BAG ON/OFF indicators for 5 seconds; then the PPS module conducts tests on the PPS components and circuits while both PASSENGER AIR BAG ON/OFF indicators are illuminated. If no malfunctions are detected, the PPS module will illuminate either the ON or OFF indicator of the PASSENGER AIR BAG indicator, depending on the status of the PPS. If a malfunction is detected, the PPS module will store a diagnostic trouble code (DTC), default the PPS to the OFF state, and communicate with the SDM that a DTC has been set. The SDM will request the instrument panel cluster (IPC) to illuminate the AIR BAG indicator to notify the driver of a PPS malfunction.
Diagnostic Aids
A history DTC maybe caused by an intermittent short or open in the ignition 1 circuit for the passenger AIR BAG ON/OFF indicator.
Reference Information
Schematic Reference
SIR Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
SIR System Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
With the passenger seat occupied and unoccupied the inflatable restraint passenger air bag ON/OFF indicator should switch states within 5 seconds.
Circuit/System Testing
Important: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
* Passenger AIR BAG ON/OFF indicator
* PPS module
* Passenger AIR BAG ON/OFF indicator wiring harness connector
* PPS wiring harness connector
1. Ignition OFF, disconnect the harness connector at the inflatable restraint passenger air bag on/off indicator.
2. Test for less than 1 ohm between the ground circuit terminal 2 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that 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, if the circuit tests normal and the ignition fuse is open, test or replace the inflatable restraint passenger air bag on/off indicator.
4. With the right front passenger seat occupied, verify that a test lamp illuminates between the control circuit terminal 1 and B+.
• If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PPS module.
5. With the right front passenger seat vacant, verify that a test lamp does not illuminate between the control circuit terminal 1 and B+.
• If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the PPS module.
6. With the right front passenger seat vacant, verify that a test lamp illuminates between the control circuit terminal 3 and B+.
• If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PPS module.
7. With the right front passenger seat occupied, verify that a test lamp does not illuminate between the control circuit terminal 3 and B+.
• If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the PPS module.
8. If all circuits test normal, test or replace the inflatable restraint passenger air bag on/off indicator.
Component Testing
1. Ignition OFF, disconnect the harness connector at the inflatable restraint passenger air bag on/off indicator.
2. Install a 2-amp fused jumper wire between the ignition terminal 4 and 12 volts. Momentarily install a jumper wire between the control terminal 1 and ground. Verify the ON indicator illuminates.
• If the ON indicator does not illuminate, replace the inflatable restraint instrument panel module indicator.
3. Install a 2-amp fused jumper wire between the ignition terminal 4 and 12 volts. Momentarily install a jumper wire between the control terminal 3 and ground. Verify the OFF indicator illuminates.
• If the OFF indicator does not illuminate, replace inflatable restraint instrument panel module 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)
* SIR/SRS Wiring Repairs (Component Tests and General Diagnostics)
* Control Module References (Programming and Relearning) for PPS replacement, setup, and programming