Circuit/System Testing
WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
- Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 V.
- If the battery voltage is not within the specified range, refer to Charging System Test .
- Ignition OFF, disconnect the harness connectors of the appropriate control module.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ω between the ground circuit terminals listed below and ground:
- Terminal 16 X2, K26 Headlamp control module
- Terminal D, K85 Passenger presence detection module
- Terminal A X1, K29F Seat heating control module (front)
- Terminal A X1, K29R Seat heating control module (rear)
- Terminal 10 X1, P16 Instrument cluster
- Terminal 7 X1, K41 Parking assist control module
- Terminal 2 X2, K84 Keyless entry control module
- Terminal 6 X2, K84 Keyless entry control module
- Terminal 8 A13, K40 Rear audio control module
- Terminal 6 X4, K40 Seat memory control module
- Terminal 38 X1, A11 Radio
- Terminal 19 X1, K36 Inflatable restraint sensing and diagnostic module
- Terminal 6, K60 Steering column lock control module
- Terminal 7, K60 Steering column lock control module
- Terminal 1 X2, K101 Trailer interface control module
- Terminal 2, K82 Module telephone control module
- Terminal 11 X1, T11 Multimedia player interface module
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground:
- Terminal 18 X2, K26 Headlamp control module
- Terminal A, K85 Passenger presence detection module
- Terminal B X1, K29F Seat heating control module (front)
- Terminal B X1, K29R Seat heating control module (rear)
- Terminal 19, P16 Instrument cluster
- Terminal 20, P16 Instrument cluster
- Terminal 1 X1, K41 Parking assist control module
- Terminal 1 X2, K84 Keyless entry control module
- Terminal 5 X2, K84 Keyless entry control module
- Terminal 16, A13 Rear audio control module
- Terminal 1 X4, K40 Seat memory control module
- Terminal 44 X1, A11 Radio
- Terminal 9 X1, K36 Inflatable restraint sensing and diagnostic module
- Terminal 17 X1, K36 Inflatable restraint sensing and diagnostic module
- Terminal 3, K60 Steering column lock control module
- Terminal 5, K60 Steering column lock control module
- Terminal 3 X2, K101 Trailer interface control module
- Terminal 1, K82 Module telephone control module
- Terminal 1 X1, T11 Multimedia player interface module
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- If the circuits test normal, replace the appropriate control module.