Suzuki Grand Vitara XL-7 Service Manual page 89

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
1 DTC Check.
1) With ignition switch OFF, install scan tool.
2) Start engine and check DTC.
Is there any DTC(s).
2 MIL circuit Check:
(1) With ignition switch OFF, disconnect couplers
from ECM (PCM).
Does MIL turn ON at ignition switch ON?
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).
ENGINE DIAGNOSIS (RHZ ENGINE WITH SINGLE-CONNECTOR ECM) 6-29
ACTION YES
Go to Step 2 of
"ENGINE DIAG.
FLOW TABLE" in
this section.
"PPL/YEL" wire
shorted to ground
circuit.
NO
Go to Step 2.
Substitute a
known-good
ECM (PCM) and
recheck.