Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
- PPS module
- PPS module wiring harness
- Verify DTC 1050 is not set.
- If DTC 1050 is set as current, refer to Charging System Test .
- Ignition OFF, disconnect the harness connector at the PPS module.
- Ignition OFF, test for less then 5 ohm of resistance between the ground circuit terminal D and ground.
- If greater then the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the PPS module.