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Repairing "OC" In CMTC Display

NOTE: After repairs for any Ambient Temperature Sensor (ATS) problem, vehicle must be driven continuously more than 3 miles at speeds greater than 25 MPH in order to update Overhead Traveler Information System (OTIS) display.
  1. Ensure ignition is off. Disconnect Ambient Temperature Sender (ATS) connector. See COMPONENT LOCATIONS  . Connect jumper wire between ATS connector terminals. Connect scan tool to Data Link Connector (DLC). Turn ignition switch to ON position. Observe Compass Mini Trip Computer (CMTC) display on scan tool. If CMTC displays SC, replace ATS. Perform BODY VERIFICATION TEST  . If CMTC does not display SC, go to next step.
  2. Turn ignition switch to OFF position. Disconnect jumper wire and reconnect ATS. Turn ignition on, for 1-2 minutes, then turn ignition switch to OFF position. Disconnect CMTC module connector. Disconnect ATS. Connect a jumper wire between ground and ATS harness connector terminal No. 3 (Violet/Light Green wire). If CMTC displays SC, repair open in ground circuit between ATS connector (Black/Light Blue wire) terminal and ground. Perform BODY VERIFICATION TEST  . If CMTC does not display SC, go to next step.
  3. Restore any previously disconnected components and connectors. Using a jumper wire connected to ground, backprobe CMTC harness connector terminal No. 3 (Violet/Light Green wire). If CMTC displays SC, repair open in Violet/Light Green wire between ATS harness connector and CMTC connector. Perform BODY VERIFICATION TEST  . If CMTC does not display SC, replace CMTC module. Perform BODY VERIFICATION TEST  after repair.
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