YH4
GRAND
VITARA
G16/J20 Engines
H25 Engine
1. PCM
2. J/B
3. O/D cut switch
4. P/N change switch
5. J/C
1. PCM
2. Fuse
3. O/D cut switch
4. P/N change switch
5. J/C
6. J/C
AUTOMATIC TRANSMISSION (4 A/T) 7B1-35
DIAGNOSTIC FLOW TABLE B-1 “O/D OFF” LIGHT CIRCUIT CHECK
(“O/D OFF” LIGHT DOESN’T LIGHT AT IGNITION SWITCH ON BUT
ENGINE STARTS UP)
WIRING DIAGRAM
TROUBLESHOOTING
STEP ACTION YES NO
1 “O/D OFF” light circuit check:
(1)With ignition switch OFF, disconnect
couplers from PCM.
(2)Using service wire, connect E61-20
(G16/J20 engines) or E61-7 (H25 engine)
terminal of disconnected PCM coupler and
ground.
Does “O/D OFF” light turn ON at ignition
switch ON?
Poor E61-20 (G16/J20
engines) or E61-7 (H25
engine) terminal
connection.
If OK, substitute a known-
good PCM and recheck.
Bulb burned out or faulty
“W/B”, “B/W” wire.
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