W/Harness Inspection

Engine Control

P0605 Internal Control Module Read Only Memory (ROM) Error - W/Harness Inspection

Back Up Voltage Inspection

1. Ignition "OFF"
2. Disconnect ECM connector.
3. Ignition "ON"
4. Measure voltage between terminal 6 of the ECM harness connector and chassis ground.

Specification : Remain stable at battery voltage

5. Are circuits remaining stable at battery voltage?