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-> 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): - Intake air shutoff throttle connector - ECM connector - Intake air shutoff throttle - ECM
-> No REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test the system for normal operation. G552800t7 : CHECK THE SIGNAL AND RETURN CIRCUITS FOR SHORT 1. Measure the resistance between: C39, harness side C39, harness side Pin 02
Pin 01
Is the resistance greater than 100 Kohms? -> Yes GO to Pinpoint Test G552800t8.
-> No REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test the system for normal operation. G552800t8 : CHECK WHETHER THE SHORT CIRCUIT IS IN THE HARNESS OR 1. Key off. 2. Disconnect the ECM connector, C100. 3. Key on, engine off. 4. Measure the resistance between: C39, harness side C39, harness side Pin 02
Pin 01
Is the resistance greater than 100 Kohms? -> 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 |