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Is the voltage greater than 3 volts? -> Yes REPAIR the short circuit to high voltage. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No GO to Pinpoint Test G258127t26.
G258127t26 : CHECK H02S HEATER CONTROL CIRCUIT FROM ECM FOR 1. Turn the ignition switch to the OFF position. 2. Measure the resistance between PI10, pin 02 (RU) and GROUND. Is the resistance less than 10,000 ohms? -> Yes REPAIR the short circuit to GROUND. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No INSTALL a new H02S. CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, contact dealer technical support for advice on possible ECM failure. PINPOINT TEST G258127p8 : DTC G258127t27 : CHECK THE CATALYST MONITOR SENSOR SENSING CIRCUIT 1. Disconnect the battery negative terminal. 2. Disconnect the H02S electrical connector, PI11. 3. Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between PI11, pin 04 (N) and PI01, pin 128 (N). Is the resistance greater than 5 ohms? -> Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the |