Component Testing
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Relay Test
- Ignition OFF, disconnect the relay.
- Test for 70-100 ohms of resistance between terminals 85 and 86.
- If the resistance is not within the specified range, replace the relay.
- Test for infinite resistance between the following terminals:
- 30 and 85
- 30 and 86
- 30 and 87
- 85 and 87
- If not the specified value, replace the relay.
- Install a 10A fused jumper wire between relay terminal 85 and B+. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms of resistance between terminals 30 and 87.
- If greater than the specified range, replace the relay.
Door Open Switch Test
- Ignition OFF, remove the appropriate door lock actuator.
- Test for infinite resistance between the appropriate signal and low reference terminals listed below with the switch in the open position.
- Driver door -- signal terminal 1 and low reference terminal 4
- Passenger door -- signal terminal 4 and low reference terminal 1
- Left rear door -- signal terminal 1 and ground terminal 4
- Right rear door -- signal terminal 4 and ground terminal 1
- If not the specified value, replace the appropriate door lock actuator.
- Test for less than 2 ohms between the appropriate signal and ground terminals listed below with the switch in the closed position.
- Driver door -- signal terminal 1 and low reference terminal 4
- Passenger door -- signal terminal 4 and lo reference terminal 1
- Left rear door -- signal terminal 1 and ground terminal 4
- Right rear door -- signal terminal 4 and ground terminal 1
- If greater than the specified range, replace the appropriate door lock actuator.