Circuit/System Testing
WARNING: This page is about a different car, the 2007 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
- The PPS module
- The SDM module
- The PPS wiring harness connector
- The SDM wiring harness connector
- Ignition ON, the PPS should turn ON the PPS ON/OFF indicators. Verify the PPS illuminates the PPS ON/OFF indicators.
- If the Passenger Air Bag ON/OFF status indicator does not illuminate refer to Passenger Presence System Indicator Circuit Malfunction .
- Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to Passenger Presence System Flash Code Procedures . Verify no PPS DTCs are set.
- If the PPS has any current or history DTCs stored, you must address the PPS DTCs first. Refer to the Diagnostic Trouble Code (DTC) List - Vehicle .
- Ignition OFF, disconnect the PPS module connector. Refer to PPS replacement in Repair Instructions for connector location.
- Remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location.
Note:
- Test the occupant sensor serial data circuit between the PPS and SDM connector for an open, short to ground, or high resistance. Verify no open, short to ground, or high resistance exists.
- If any of the above conditions are found make the appropriate repair.
- Test the PPS ignition 1 voltage and ground circuits for a short to ground, a short to voltage, a high resistance, or an open. Verify no short to ground, a short to voltage, a high resistance, or an open exists.
- If any of the above conditions are found make the appropriate repair.
- Replace the PPS.
IMPORTANT:
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.