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P0128-THERMOSTAT RATIONALITY (CONTINUED) 7. SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE NOTE: Visually inspect both the component and the PCM connec- Disconnect the applicable Temperature Sensor harness connector. Disconnect the C2 PCM harness connector. Ignition on, engine not running. Measure the voltage on the (K2) ECT Signal circuit and the (G31) AAT Is the voltage above 5.2 volts? Yes >> Repair the short to battery voltage in the Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 8 9 - 146 ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L DR/DH |