YH4
GRAND
VITARA
7B1-36 AUTOMATIC TRANSMISSION (4 A/T)
Switch ON
position
Switch OFF
position
Switch ON
position
Switch OFF
position
DIAGNOSTIC FLOW TABLE B-2 “O/D OFF” LIGHT CIRCUIT CHECK
(“O/D OFF” LIGHT COMES ON STEADILY)
WIRING DIAGRAM – Refer to Table B-1 in this section.
TROUBLESHOOTING
STEP ACTION YES NO
1 Check O/D cut Switch Position.
Is O/D cut switch turned OFF (Is switch button at OFF
position)?
Go to Step 2. Turn O/D cut switch
OFF.
2 Check Lamp Circuit for Short.
1) Turn ignition switch OFF and disconnect PCM
connectors.
2) Turn ignition switch ON.
Does “O/D OFF” lamp come ON steadily?
“W/B” circuit shorted
to ground.
Go to Step 3.
3 Check O/D cut Switch Circuit.
1) Check resistance between terminal E61-33
(G16/J20 engines) or E61-14 (H25 engine) of
disconnected PCM connector and body ground with
O/D cut switch OFF.
Is continuity indicated?
Go to Step 4. Check PCM ground
circuit for open.
If ground circuit is
OK, substitute a
known-good PCM
and recheck.
4 Check O/D cut Switch for Operation.
1) Remove console box.
2) Disconnect O/D cut switch connector.
3) Check continuity between switch terminals under
each condition below.
Switch OFF position: No continuity
Switch ON position: Continuity
Is check result satisfactory?
“Y/R” circuit shorted
to ground.
Replace O/D cut
switch.
Fig. for Step 1. Fig. for Step 4.
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