6-1-8 ENGINE DIAGNOSIS (RHZ ENGINE WITH TRIPLE-CONNECTOR ECM)
TABLE A-2 MALFUNCTION INDICATOR LAMP CIRCUIT CHECK – MIL REMAINS “ON”
AFTER ENGINE STARTS
WIRING DIAGRAM/CIRCUIT DESCRIPTION
Refer to TABLE A-1.
INSPECTION
STEP ACTION YES NO
1 DTC Check.
1) With ignition switch OFF, install scan tool.
2) Start engine and check DTC.
Is there any DTC(s).
Go to Step 2 of
“ENGINE DIAG.
FLOW TABLE” in
this section.
Go to Step 2.
2 MIL circuit Check:
(1) With ignition switch OFF, disconnect couplers
from ECM (PCM).
Does MIL turn ON at ignition switch ON?
“PPL/YEL” wire
shorted to ground
circuit.
Substitute a
known-good
ECM (PCM) and
recheck.
TABLE A-3 ECM (PCM) POWER AND GROUND CIRCUIT CHECK – MIL DOESN’T LIGHT AT
IGNITION SWITCH ON AND ENGINE DOESN’T START THOUGH IT IS CRANKED UP.
WIRING DIAGRAM
Refer to TABLE A-1.
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, the double relay turns ON (the contact point closes) and the main power
is supplied to ECM (PCM).
To Next Page
Loading...
Need help?
General
