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• When Monitored: • Set Condition: Possible Causes TERMINAL DAMAGE OR CORROSION EXCESSIVE RESISTANCE IN THE DEFOGGER GRID OR (Z908) GROUND CIRCUIT FOR THE GRID (C515) REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE (C16) FUSED REAR DEFOGGER CONTROL OUTPUT CIRCUIT HIGH RESISTANCE (IF EQUIPPED WITH (Z928)/(Z960) GROUND CIRCUIT (IF EQUIPPED WITH HEATED MIRRORS) HEATED MIRRORS (IF EQUIPPED) TOTALLY INTEGRATED POWER MODULE Diagnostic Test 1. CHECK FOR ACTIVE DTC B10ED–REAR DEFROST CONTROL CIRCUIT OVERCURRENT Turn the ignition on. With the scan tool, record and erase DTC’s. Operate the Rear Defogger Switch several times. With the scan tool, read DTC’s. Does the scan tool display active DTC B10ED-REAR DEFROST CONTROL CIRCUIT OVERCURRENT? 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. VISUAL AND PHYSICAL CONNECTOR AND TERMINAL INSPECTION Turn the ignition off. Inspect the following connector terminal condition. Check for signs of corrosion build up or damage that would com- NOTE: Make sure that all in-line connectors are inspected for corrosion and/or damage. Visually inspect the wiring harness. Look for any chafed, pierced, pinched or partially broken wires hidden in the Were any of the above conditions found? Yes >> Repair or replace as necessary. Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON- No >> Go To 3 PM HEATED GLASS - ELECTRICAL DIAGNOSTICS 8G - 19 |