## PGM-FI System

#### DTC Troubleshooting (cont'd)

11-75

DTC P1361: TDC Sensor Intermittent Interruption DTC P1362: TDC Sensor No Signal

1. Reset the ECM (see page 11-4).

1. Start the engine.

   Is DTC P1361 and/or P1362 indicated?

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.

1. Turn the ignition switch OFF.

1. Disconnect the TDC sensor 3P connector.

1. Turn the ignition switch ON (II).

1. 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.

1. Measure voltage between the TDC sensor 3P connector terminal No. 1 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.

1. Measure voltage between the TDC sensor 3P connector terminals No. 2 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.

1. Substitute a known-good TDC sensor and recheck.

   Is DTC P1361 and/or P1362 indicated?

YES - Substitute a known-good ECM and recheck (see page 11-5). If symptom/indication goes away, replace the original ECM.

NO - Replace the original TDC sensor.

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