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Compass/Mini-Trip Computer Elapsed Time Inoperative Or Wrong

  1. Turn ignition on. Using scan tool, select ELECTRO/MECH CLUSTER. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool does not display BUS OPERATIONAL, see appropriate test procedure under COMMUNICATIONS. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  2. If scan tool displays NO RESPONSE , go to NO RESPONSE FROM MECHANICAL INSTRUMENT CLUSTER  under COMMUNICATIONS. If scan tool does not display NO RESPONSE, go to next step.
  3. Using scan tool, select BODY, then BODY COMPUTER. Select SYSTEM TEST. If scan tool does not display PCM INACTIVE ON THE BUS, go to next step. If scan tool displays PCM INACTIVE ON THE BUS, go to NO RESPONSE FROM POWERTRAIN CONTROL MODULE  under COMMUNICATIONS.
  4. Turn ignition off. Disconnect Compass/Mini-Trip Computer (CMTC) connector. See COMPONENT LOCATIONS  . Turn ignition on. Using DVOM, measure voltage between ground and CMTC connector terminal No. 5 (Violet/Brown wire). See Figure . If voltage is 1.5-2.5 volts, go to next step. If voltage is not 1.5-2.5 volts, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  5. Using DVOM, measure voltage between ground and CMTC connector terminal No. 11 (White/Black wire). If voltage is 1.5-2.5 volts, replace CMTC. See OVERHEAD CONSOLE  under REMOVAL & INSTALLATION. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If voltage is not 1.5-2.5 volts, repair open in White/Black wire. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
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