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Repairing "OC" In CMTC Display

NOTE: For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. Drive vehicle at least 3 miles (greater than 25 MPH) to update CMTC and perform VERIFICATION TEST VER-1A  after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector.
  1. Disconnect ambient temperature sensor connector. Sensor is located to the right of condenser on radiator saddle. Connect jumper wire between sensor connector terminals. Turn ignition on. Observe CMTC display. If CMTC displays SC, replace ambient temperature sensor. If CMTC does not display SC, go to next step.
  2. Turn ignition off. Disconnect jumper wire. Disconnect CMTC module connector. Connect a jumper wire between ground and ambient temperature sensor harness connector Violet/Light Green wire. If CMTC displays SC, repair open Black/Light Blue wire between ambient temperature sensor harness connector and ground. If CMTC does not display SC, go to next step.
  3. Connect a backprobe jumper wire between ground and CMTC harness connector terminal No. 3 (Violet/Light Green wire). If CMTC displays SC, repair open Violet/Light Green wire between ambient temperature sensor harness connector and CMTC connector. If CMTC does not display SC, replace CMTC module.
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