Bus (+) &/Or Bus (-) Open
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
- 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.
- 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 .
- 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 .