P1607

DTC P1607: ECM/PCM Internal Circuit Malfunction

1. Reset the ECM/PCM.
2. Turn the ignition switch ON (II).
3. Wait 30 seconds.

Is DTC P1607 indicated?

YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.

NO - Go to step 4.

4. Turn the ignition switch OFF.
5. Turn the ignition switch ON (II).
6. Wait 10 seconds.

Is DTC P1607 indicated?

YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.

NO - Intermittent failure, system is OK at this time.