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-> Yes GO to Pinpoint Test G549822t76.
-> No GO to Pinpoint Test G549822t74.
G549822t74 : CHECK THE IAT SENSOR RETURN CIRCUIT FOR SHORT 1. Measure the resistance between: EC67, harness side Battery
Pin 03
Positive terminal
Is the resistance greater than 100 Kohms? -> Yes GO to Pinpoint Test G549822t75.
-> No GO to Pinpoint Test G549822t83.
G549822t75 : CHECK THE IAT SENSOR TO ECM RETURN CIRCUIT FOR HIGH 1. Key off. 2. Disconnect the ECM connector, EC66. 3. Measure the resistance between: EC67, harness side EC66, harness side Pin 03
Pin L4
Is the resistance less than 10 ohms? -> Yes Suspect: - 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. |