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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 G258127t157.
G258127t157 : CHECK THE EFT SENSOR SENSING CIRCUIT FOR SHORT TO 1. Turn the ignition switch to the OFF position. 2. Measure the resistance between IL09, pin 01 (WU) 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 EFT sensor. CLEAR the DTC. TEST the system for normal operation. PINPOINT TEST G258127p35 : DTC G258127t158 : CHECK THE A/C PRESSURE SENSOR SENSING CIRCUIT FOR 1. Disconnect the battery negative terminal. 2. Disconnect the A/C pressure sensor electrical connector, EC11. 3. Disconnect the ECM electrical connector, PI01. 4. Measure the resistance between EC11, pin 02 (WU) and PI01, pin 121 (WU). 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.
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