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No Response From Compass/Mini-Trip Computer

  1. Turn ignition switch to OFF position. Disconnect Compass/Mini-Trip Computer (CMTC) harness connector, if equipped. Turn ignition switch to ON position. Measure voltage between ground and terminal No. 6 (White/Black wire) at CMTC harness connector. See Figure . If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair open in White/Black wire between CMTC and junction block. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  2. Turn ignition switch to OFF position. Using a jumper wire, ground terminal No. 11 (White/Black wire) at CMTC harness connector. Turn ignition switch to ON position. Using scan tool, enter SYSTEM MONITORS then CCD BUS TEST. If scan tool displays SHORT TO GROUND, go to next step. If scan tool displays SHORT TO GROUND, repair open in White/Black wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  3. Turn ignition switch to OFF position. Using a jumper wire, ground terminal No. 5 (Violet/Brown wire) at CMTC harness connector. Turn ignition switch to ON position. Using scan tool, enter SYSTEM MONITORS then CCD BUS TEST. If scan tool displays SHORT TO GROUND, replace CMTC. See COMPASS/MINI-TRIP COMPUTER  under REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If scan tool displays SHORT TO GROUND, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
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