## PGM-FI System

#### DTC Troubleshooting (cont'd)

11-238

12. Measure voltage between IMA 3P connector terminals No. 2 and No. 3.

IMA 3P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Replace the IMA.
NO | - Repair open in the wire between the ECM/PCM (E15) and the IMA.

13. Turn the ignition switch OFF.
14. Disconnect the IMA 3P connector.
15. Turn the ignition switch ON (II).
16. Measure voltage between ECM/PCM connector terminals E4 and E15.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there about 5 V?

YES | - Replace the IMA.
NO | - Go to step 17.

17. Measure voltage between IMA connector terminal No. 1 and body ground.

IMA 3P CONNECTOR

Wire side of female terminals

Is there about 5 V?

YES | - Go to step 18.
NO | - Repair open in the wire between the ECM/PCM (E5) and the IMA.

18. Turn the ignition switch OFF.
19. Disconnect ECM/PCM connector E (31P).
20. Check for continuity between ECM/PCM connector terminal E15 and body ground.

ECM/PCM CONNECTOR E (31P)

Wire side of female terminals

Is there continuity?

YES | - Repair short in the wire between the ECM/PCM (E15) and the IMA.
NO | - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM.