Measure voltage between ECM/PCM connector terminal A7 and body ground. ECM/PCM CONNECTOR A (31P) Wire side of female terminals Is there about 5 V? YES - Repair open in the wire between the ECM/PCM (A7) and the CKP sensor. NO - Go to step 11. Turn the ignition switch OFF. Disconnect ECM/PCM connector A (31P). Check for continuity between ECM/PCM connector terminal A7 and body ground. ECM/PCM CONNECTOR A (31P) Wire side of female terminals Is there continuity? YES - Repair short in the wire between the ECM/PCM (A7) and the CKP sensor. NO - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.

DTC 6: ECT Sensor Circuit Malfunction Reset the ECM/PCM (see page 11-468). Turn the ignition switch ON (II). Is the MIL on and does it indicate DTC 6? YES - Go to step 3. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the ECT sensor, climate control unit (with climate control), and the ECM/PCM. Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or neutral) until the radiator fan comes on, then let it idle. Turn the ignition switch OFF. Disconnect the 2P connector from the ECT sensor. Measure resistance between the ECT sensor 2P connector terminals No. 1 and No. 2. ECT SENSOR 2P CONNECTOR Terminal side of male terminals Is there 200-400 ohms? YES - Go to step 7. NO - Replace the ECT sensor.