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Repairing "SC" In CMTC Display

NOTE: For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER - INTRODUCTION article. 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. Observe CMTC display. If CMTC displays OC, replace ambient temperature sensor. If CMTC does not display OC, go to next step.
  2. Turn ignition off. Disconnect CMTC connector. Using an external ohmmeter, measure resistance between ground and CMTC harness connector terminal No. 3 (Violet/Light Green wire). If resistance is less than 5 ohms, repair Violet/Light Green wire between CMTC module and ambient temperature sensor for short to ground. If resistance is 5 ohms or more, go to next step.
  3. Measure resistance between terminals No. 9 (Black/Light Blue wire) and No. 3 (Violet/Light Green wire) on CMTC harness connector. If resistance is less than 1000 ohms, repair Violet/Light Green wire for short to Black/Light Blue wire. If resistance is 1000 ohms or more, replace CMTC module.
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