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G531330t32 : CHECK THE CATALYST MONITOR HEATER CONTROL CIRCUIT 1. Disconnect the ECM electrical connector, PI300. 2. Measure the resistance between: Catalyst monitor connector PI11, harness side ECM connector PI300, harness side Pin 02
Pin 88
Is the resistance greater than 5 ohms? -> Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and test the system for normal operation.
-> No INSTALL a new catalyst monitor sensor. Catalyst Monitor Sensor (18.30.66) CLEAR the DTC and test the system for normal operation. If the DTC is repeated, refer to the warranty policy and procedures manual if an ECM is suspect. PINPOINT TEST G531330p10 : LEFT- G531330t35 : CHECK THE H02S VARIABLE CIRCUIT FOR SHORT CIRCUIT TO 1. Disconnect the H02S electrical connector, PI12. 2. Measure the resistance between: H02S connector PI12, harness side Battery
Pin 04
Negative terminal
Is the resistance less than 10,000 ohms? -> Yes REPAIR the short circuit. For additional information, refer to the wiring diagrams. CLEAR the DTC and test the system for normal operation.
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