DTC 8: TDC Sensor Circuit Malfunction Reset the ECM/PCM (see page 11-468). Start the engine. Is the MIL on and does it indicate DTC 8? YES - Go to step 3. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the TDC sensor and at the ECM/PCM. Turn the ignition switch OFF. Disconnect the TDC sensor 3P connector. Turn the ignition switch ON (II). Measure voltage between the TDC sensor 3P connector terminal No. 3 and body ground. TDC SENSOR 3P CONNECTOR Wire side of female terminals Is there battery voltage? YES - Go to step 7. NO - Repair open in the wire between the PGM-FI main relay 1 and the TDC sensor.

Measure voltage between the TDC sensor 3P connector terminal No. 2 and body ground. TDC SENSOR 3P CONNECTOR Wire side of female terminals Is there about 5 V? YES - Go to step 8. NO - Go to step 10. Measure voltage between the TDC sensor 3P connector terminals No. 1 and No. 3. TDC SENSOR 3P CONNECTOR Wire side of female terminals Is there battery voltage? YES - Go to step 9. NO - Repair open in the wire between the TDC sensor and G101. Substitute a known-good TDC sensor and recheck. Is the MIL on and does it indicate DTC 8? YES - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM. NO - Replace the original TDC sensor.