## Idle Control System

#### DTC Troubleshooting (cont'd)

11-118

11. Connect the IAC valve 3P connector terminal No. 3 and body ground with a jumper wire.

IAC VALVE 3P CONNECTOR

Wire side of female terminals

12. Check for continuity between ECM/PCM connector terminal A12 and body ground.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there continuity?

YES | - Go to step 13.
NO | - Repair open in the wire between the IAC valve and the ECM/PCM (A12).

13. Reconnect the IAC valve 3P connector.
14. Turn the ignition switch ON (II).

15. Measure voltage between body ground and ECM/PCM connector terminal A12.

ECM/PCM CONNECTOR A (31P)

Wire side of female terminals

Is there battery voltage?

YES | - Substitute a known-good ECM/PCM and recheck (see page 11-6). If symptom/indication goes away, replace the original ECM/PCM.
NO | - Replace the IAC valve.