## PGM-FI System

#### DTC Troubleshooting (cont'd)

11-519

DTC 7: TP Sensor Circuit Malfunction

1. Reset the ECM/PCM (see page 11-468).
2. Start the engine.

Is the MIL on and does it indicate DTC 7?

YES | - Go to step 3.
NO | - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the TP sensor and at the ECM/PCM.

3. Turn the ignition switch OFF.
4. Turn the ignition switch ON (II).
5. Measure voltage between ECM/PCM connector terminals A10 and A15.
   NOTE: There should be a smooth transition as the throttle is pressed.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is the voltage about 0.5 V at full close throttle, and about 4.5 V at full open throttle?

YES | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.
NO | - Go to step 6.

6. Turn the ignition switch OFF.
7. Disconnect the TP sensor 3P connector.
8. Turn the ignition switch ON (II).

9. At the engine wire harness side, measure voltage between the TP sensor 3P connector terminal No. 1 and body ground.

TP SENSOR 3P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Go to step 11.
NO | - Go to step 10.

10. Measure voltage between ECM/PCM connector terminals A20 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 (A20) and the TP sensor.
NO | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.