Compass/Mini-Trip Test 3A - CMTC Displays OC
NOTE:
Perform COMPASS/MINI-TRIP TEST 1A
before proceeding. For connector terminal ID, see CONNECTOR IDENTIFICATION
and WIRING DIAGRAM. Perform TEST VER-1A
after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
- Disconnect the ambient temperature sensor connector. See Figure under COMPASS/MINI-TRIP TEST 2A . Connect jumper wire between ambient temperature sensor connector terminal No. 1 (Light Green/White wire) and No. 2 (Dark Green/Red wire). Turn ignition on, engine off. Observe compass/mini-trip display. If compass/mini-trip displays OC, replace ambient temperature sensor. If compass/mini-trip does not display OC, go to next step.
- Turn ignition off. Disconnect Body Control Module (BCM) Black 24-pin connector. BCM is located under left side of dash. Using scan tool in ohmmeter mode, probe ambient temperature sensor connector terminal No. 2 (Dark Green/Red wire). If resistance is more than 5 ohms, repair open in Dark Green/Red wire. If resistance is 5 ohms or less, go to next step.
- Using scan tool in ohmmeter mode, probe ambient temperature sensor connector terminal No. 1 (Light Green/White wire). If resistance is more than 5 ohms, repair short in Light Green/White wire. If resistance is 5 ohms or less, replace BCM.