Symptom Table
SYSTEM — BASIC ENGINE CONTROL SYSTEM



1 - 6: The numbers refer to the order of inspection.
(continued on next table)
SYSTEM — ENGINE MECHANICAL & OTHER



1 - 6: The numbers refer to the order of inspection.
Normal operating conditionP0603 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0603
ECM BACK UP CIRCUIT
[Internal control module keep
alive memory (KAM) error]
Malfunction in the internal back up RAM o ...
Wiring diagram
AUTOMATIC AIR CONDITIONING SYSTEM
Wiring Diagram
...
Ipdm-e branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the IPDM E/R for damage, bend and
loose connection (unit side
and connector side).
Is the inspection result normal?
Yes ...