Power Socket
P0604 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0604
ECM
[Internal control module
random access memory
(RAM) error]
Malfunction in the internal RAM of ECM.
ECM
DTC CON ...
Ground
Ground distribution
Main harness
Engine room harness
Engine control harness
Body harness
...
Compression pressure
Inspection
Warm up the engine to full operating temperature.
Release fuel pressure. Refer to EC-143, "Work Procedure".
Remove ignition coil and spark plug from each cylinder. Refer to EM-46,
"Exploded View".
Connect engine tachometer (not required in use of CONSULT). ...