Compass/Temp Module Inoperative
NOTE:
After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.
CAUTION:
After any repair for an ambient temperature sensor problem, the vehicle must be driven for more than 2 minutes to update the compass/temp module display.
- Turn the ignition off. Disconnect the overhead console harness connector. See Figure. Measure the voltage between the fused B+ circuit and ground. If the voltage is more than 10.5 volts, go to the next step. If the voltage is less than 10.5 volts, repair the fused B+ circuit for an open.
- Turn the ignition off. Disconnect the overhead console harness connector. Turn the ignition on. Measure the voltage between the fused ignition switch output circuit and ground. If the voltage is above 10.5 volts, go to the next step. If the voltage is below 10.5 volts, repair the fused ignition switch output circuit for an open.
- Turn the ignition off. Disconnect the overhead console harness connector. Measure the resistance between ground and the compass/temp module ground circuit. If the resistance is below 5.0 ohms, replace the compass/temp module. If the resistance is above 5.0 ohms, repair the compass/temp module ground circuit for an open.
NOTE:
Ensure that the vehicle has been properly demagnetized before attempting to calibrate the compass.
CAUTION:
The compass must be calibrated after any replacement or display "lock-up".