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G531332t81 : CHECK THE MAF SENSOR GROUND CIRCUIT FOR HIGH 1. Key off. 2. Disconnect the ECM electrical connector, PI300. 3. Measure the resistance between: MAF sensor connector PI14, harness side ECM connector PI300, harness side Pin 02
Pin 18
Is the resistance greater than 5 ohms? -> Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No GO to Pinpoint Test G531332t82.
G531332t82 : CHECK THE MAF SENSOR GROUND CIRCUIT FOR SHORT 1. Key on, engine off. 2. Measure the voltage between: MAF sensor connector PI14, harness side Battery
Pin 02
Negative terminal
Is the voltage greater than 3 volts? -> Yes REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No Refer to the warranty policy and procedures manual if an ECM is suspect. PINPOINT TEST G531332p22 : |