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G552275t27 : CHECK FOR 5 VOLT SUPPLY AND SIGNAL RETURN CIRCUITS 1. Key off. 2. Disconnect the ECM connector, C100. 3. Key on, engine off. 4. Measure the resistance between: C30, harness side C30, harness side Pin 03
Pin 02
Is the resistance greater than 100 Kohms? -> Yes GO to Pinpoint Test G552275t28.
-> No REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test the system for normal operation. G552275t28 : CHECK THE FRP SENSOR RETURN CIRCUIT FOR HIGH 1. Measure the resistance between: C30, harness side C100, harness side Pin 02
Pin E2
Is the resistance less than 10 ohms? -> Yes An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other physical damage to the harness. If no fault is found in the circuit, suspect the following component(s): - ECM connector - ECM
-> No REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test the system for normal operation. G552275t29 : CHECK FOR 5 VOLT SUPPLY AND SIGNAL RETURN CIRCUITS 1. Key off. 2. Disconnect the ECM connector, C100. 3. Measure the resistance between: |