Passenger Presence System Indicator Circuit Malfunction

Passenger Presence System Indicator Circuit Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The PASSENGER AIR BAG ON/OFF indicators, located in the center of instrument panel cluster (IPC), are used to notify the driver when the Passenger Presence System (PPS) has enabled or disabled the I/P inflator module. When the ignition is turned ON, the PPS module is supplied with voltage and commands the PASSENGER AIR BAG ON/OFF indicators ON for 5 seconds. The PPS module conducts tests on the PPS components and circuits while the PASSENGER AIR BAG ON/OFF indicators are ON. If no malfunctions are detected, the PPS module will turn 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 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 IPC to turn the AIR BAG indicator ON to notify the driver of a PPS malfunction.

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.

* Inflatable restraint passenger air bag on/off indicator.

* Inflatable restraint passenger air bag on/off indicator wiring harness.

1. Ignition OFF, disconnect the harness connector at the inflatable restraint passenger air bag on/off indicator.
2. Ignition OFF, test for less then 1 ohm of resistance 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. If the circuit tests normal and the ignition circuit fuse is open, test or replace the inflatable restraint passenger air bag on/off indicator.

4. Connect a test lamp between the control circuit terminal 3 and the ignition circuit terminal 4.
5. With the passenger seat occupied and unoccupied test lamp should switch states within 5 seconds.

• If the test lamp is always on, test the control circuit for a short to ground. If all circuits test normal replace the PPS module.
• If the test lamp is always off, test the control circuit for a short to voltage or an open/high resistance. If all circuits test normal replace the PPS module.

6. Connect a test lamp between the control circuit terminal 1 and the ignition circuit terminal 4.
7. With the passenger seat occupied and unoccupied test lamp should switch states within 5 seconds.

• If the test lamp is always on, test the control circuit for a short to ground. If all circuits test normal replace the PPS module.
• If the test lamp is always off, test the control circuit for a short to voltage or an open/high resistance. If all circuits test normal replace the PPS module.

8. If all circuits test normal, replace the inflatable restraint passenger air bag on/off indicator.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Instrument Panel Inflatable Restraint Module Indicator Replacement
* Control Module References for PPS module replacement, setup, and programming