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(P0128) THERMOSTAT RATIONALITY (CONTINUED) 11. ECT SIGNAL SIGNAL CIRCUIT OPEN Turn the ignition off. Disconnect the PCM C3 harness connector. Note: Check connectors — Clean/repair as necessary. Is the resistance below 5.0 ohms? Yes >> Go To 12 No >> Repair the ECT Signal circuit for an open. Perform POWERTRAIN VERIFICATION TEST - VER 2. 12. SENSOR GROUND CIRCUIT OPEN With the ignition off. Measure the resistance of the Sensor Ground circuit from the ECT Is the resistance below 5.0 ohms? Yes >> Replace and program the Powertrain Control Module. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL CONTROL MODULE - REMOVAL). Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> Repair the Sensor Ground circuit for an open. Perform POWERTRAIN VERIFICATION TEST - VER 2. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 121 |