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• When Monitored: • Set Condition: Possible Causes CAN B BUS TERMINAL PUSH OUT SPREAD CAN B BUS TERMINAL (D54) CAN B BUS (-) CIRCUIT OPEN INTERNAL OPEN IN A CAN B BUS MODULE Diagnostic Test 1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase TIPM DTC’s Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC’s. Does the scan tool display this DTC as active? Yes >> Go To 2 No >> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche- matic as a guide, inspect the wiring and connectors. 2. ATTEMPT TO ISOLATE THE OPEN CONDITION Turn the ignition on. With the scan tool select ECU View. Verify that all CAN B Bus modules are communicating with the scan NOTE: A red X will be next to a module that is not communicating, NOTE: If any module is not communicating, perform the appropri- Gain access to the Totally Integrated Power Module C3 harness con- Using a fused jumper wire, connect one end to ground and with the Turn the ignition on. With the scan tool monitor the ECU View screen and document all modules that display a red X. Are there any red X’s displayed next to any CAN B Bus modules? Yes >> Go To 3 No >> Check backprobe connection to ground, make sure it is proper. The CAN B Bus open DTC may no longer be active, it may be stored. Check all module connections. Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON- PM ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS 8E - 27 |