Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the telltale assembly information center.
- Ignition ON, verify a test lamp illuminates between the telltale assembly supply voltage circuit terminal 1.
- If the test lamp does not illuminate, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the telltale assembly information center.
- Ignition OFF, disconnect the X1 harness connector at the rear parking assist module.
- Ignition OFF, connect the harness connector at the telltale assembly information center.
- Connect a 3A fused jumper wire between the telltale assembly supply voltage circuit terminal 2 and B+.
- Ignition ON, connect a jumper wire between the following telltale assembly indicator control circuits and ground. When the telltale circuit is jumpered to ground, the indicator should illuminate.
- Telltale assembly indicator control circuit terminal 4
- Telltale assembly indicator control circuit terminal 9
- Telltale assembly indicator control circuit terminal 10
- If any of the indicators do not illuminate, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the telltale assembly information center.
- If all circuits test normal, test or replace the rear object alarm module.