## PGM-FI System

#### DTC Troubleshooting (cont'd)

11-235

10. Measure voltage between ECM/PCM connector terminal A26 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 (A26) and TDC sensor.
NO | - Go to step 11.

11. Turn the ignition switch OFF.
12. Disconnect ECM/PCM connector A (31P).
13. Check for continuity between ECM/PCM connector terminal A26 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 (A26) and the TDC sensor.
NO | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.

DTC 10: IAT Sensor Circuit Malfunction

1. Reset the ECM/PCM (see page 11-168).
2. Turn the ignition switch ON (II).

Is the MIL on and does it indicate DTC 10?

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

3. Turn the ignition switch OFF.
4. Disconnect the IAT sensor 2P connector.
5. Measure resistance between the IAT sensor 2P connector terminals No. 1 and No. 2.

IAT SENSOR 2P CONNECTOR

Terminal side of male terminals

Is there 0.4-4.0 kohms?

YES | - Go to step 6.
NO | - Replace the IAT sensor.