Test 11A - Compass/Temperature Module Blank Display
CAUTION:
Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS - 3.0L
article. Perform TEST VER-1 after each repair.
- Press compressor/temperature button one time. If compressor/temperature screen is not blank, system is okay at this time. If compressor/temperature screen is blank, go to next step.
- Turn ignition off. Gain access to compass/temperature module connector, located behind overhead console. Disconnect compass/temperature module connector. Using scan tool in ohmmeter mode, check resistance of compass/temperature module connector terminal No. 5 (Black/Light Green wire). If resistance is more than 5 ohms, repair Black/Light Green wire between compass/temperature module and ground for open to ground. If resistance is less than 5 ohms, go to next step.
- Turn ignition on. Using scan tool in voltmeter mode, check voltage on compass/temperature module connector terminal No. 4 (White wire). If voltage is less than 10 volts, go to next step. If voltage is more than 10 volts, replace compass/temperature module.
- Remove and inspect fuse No. 5. See Fig 1. If fuse No. 5 is open, go to next step. If fuse No. 5 is okay, check voltage on fuse No. 5 connector Black/Orange wire. If voltage is more than 10 volts, repair open in fuse No. 5 connector White wire. If voltage is less than 10 volts, repair open in Black/Orange wire.
- Turn ignition off. Using scan tool in ohmmeter mode, check resistance of compass/temperature module connector terminal No. 4 (White wire). If resistance is less than 5 ohms, repair White wire between compass/temperature module connector and fuse No. 5 for short to ground, and replace fuse. If resistance is more than 5 ohms, go to next step.
- Reconnect compass/temperature module connector. Check resistance of compass/temperature module connector terminal No. 4 (White wire). If resistance is less than 5 ohms, replace compass/temperature module and replace fuse. If resistance is more than 5 ohms, replace fuse No. 5.