## PGM-FI System

#### DTC Troubleshooting (cont'd)

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6. Turn the ignition switch ON (II).

7. At the engine wire harness side, measure voltage between the IAT sensor 2P connector terminal No. 2 and body ground.

IAT SENSOR 2P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Go to step 8.
NO | - Go to step 9.

8. Measure voltage between the IAT sensor 2P connector terminals No. 1 and No. 2.

IAT SENSOR 2P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.
NO | - Repair open in the wire between the ECM/PCM (A10) and the IAT sensor.

9. Measure voltage between ECM/PCM connector terminals A10 and B17.

ECM/PCM CONNECTORS

Is there about 5 V?

YES | - Repair open in the wire between the ECM/PCM (B17) and the IAT sensor.
NO | - Go to step 10.

10. Turn the ignition switch OFF.
11. Disconnect ECM/PCM connector B (24P).
12. Check for continuity between ECM/PCM connector terminal B17 and body ground.

ECM/PCM CONNECTOR B (24P)

Wire side of female terminals

Is there continuity?

YES | - Repair short in the wire between the ECM/PCM (B17) and the IAT sensor.
NO | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.