W/Harness Inspection

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

Voltage Inspection

Back Up Voltage Inspection
1. Ignition "OFF".
2. Disconnect PCM connector.
3. Ignition "ON".
4. Measure voltage between terminal 3 of the PCM harness connector and chassis ground.
Specification : Remain stable at battery voltage
5. Are circuits remaining stable at battery voltage?
YES
> Using a scan tool, check PCM software version and upgrade as necessary. If version is the newest one, go to "Verification of Vehicle Repair" procedure.
NO
> If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "Verification of Vehicle Repair" procedure.