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Bus (+) &/Or Bus (-) Open

CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
  1. Turn ignition switch to OFF position. Disconnect scan tool. Turn ignition switch to ON position. Using DVOM, measure voltage between ground and Data Link Connector (DLC) terminal No. 3 (Violet/Brown wire). Measure voltage between ground and DLC terminal No. 11 (White/Black wire). If either reading is not 1.8-2.8 volts, repair open in Violet/Brown wire or White/Black wire. Perform BODY VERIFICATION TEST  . If both readings are 1.8-2.8 volts, replace scan tool cable or scan tool.
  2. Turn ignition switch to OFF position. Remove Mechanical Instrument Cluster (MIC). Using DVOM, measure resistance of White/Black wire between DLC connector terminal No. 11 and MIC connector C1 terminal No. 9. If reading is less than 5 ohms, go to next step. If reading is 5 ohms or more, repair open in White/Black wire. Perform BODY VERIFICATION TEST  .
  3. Measure resistance of Violet/Brown wire between DLC connector terminal No. 3 and MIC connector C1 terminal No. 10. If reading is less than 5 ohms, replace MIC. Perform BODY VERIFICATION TEST  . If reading is 5 ohms or more, repair open in Violet/Brown wire. Perform BODY VERIFICATION TEST  .
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