YH4
GRAND
VITARA
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-15
1. Main fuse
2. Main relay
3. ECM/PCM
4. Immobilizer indicator lamp
(Vehicle not equipped with
monitor coupler)
For G16/J20 engine For H25 engine
G16/J20 Engine
H25 Engine
TABLE B IMMOBILIZER INDICATOR LAMP CHECK
(IMMOBILIZER INDICATOR LAMP DOSE NOT LIGHT AT IGNITION
SWITCH ON)
STEP ACTION YES NO
1 1) Turn ignition switch ON.
Do other indicator/warning lights in
combination meter come ON?
Go to Step 2. “IG” fuse blown, main fuse blown,
ignition switch malfunction,
“B/W” circuit between “IG” fuse
and combination meter or poor
coupler connection at
combination meter.
2 1) Turn ignition switch OFF and
disconnect connectors from ECM/
PCM.
2) Check for proper connection to ECM/
PCM at terminal E61-5 for G16/J20
engine or E61-23 for H25 engine.
3) If OK, then using service wire, ground
terminal E61-5 for G16/J20 engine or
E61-23 for H25 engine in connector
disconnected.
Does immobilizer indicator lamp turn on
at ignition switch ON?
Substitute a known-
good ECM/PCM and
recheck.
Bulb burned out or “(b)” wire
circuit open.
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