Turn relay SUZUKI GRAND VITARA 2000 2.G Service Owner's Manual

YH4
GRAND
VITARA
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-3
1
A1 A2 A3 A4
A5 A6 A9 A10A7 A8
1. Coil antenna
2. Immobilizer Control Module
3. ECM/PCM
4. Immobilizer diagnostic coupler
4-1. Diagnostic output terminal
4-2. Ground terminal
5. Malfunction indicator lamp
6. Main relay
7. Ignition switch
8. Fuse
9. Main fuse
-10. To #9-pin in Data link connector
-11. To #7-pin in Data link connector
-12. To ABS control module
-13. Immobilizer indicator lamp
(Vehicle not equipped with monitor coupler)
-14. Monitor coupler (Vehicle not equipped
with immobilizer indicator lamp)) Terminal arrangement of Immobilizer
Control Module coupler (Viewed from
harness side)
B/R
BI
BI/B
B/W
V/Y
BI/B
B/W
B
V/W
V/W
BI
R
SbI
B
V/G
V
B
R/Y WIRE
SYMBOLWIRE
COLORabcdefghijklmn
1. Ignition key with built-in
transponder
1
1. Coil antenna
opqr
IGNITION KEY
The ignition key for the immobilizer control system has a built-in
transponder. Each transponder in the key has an each transmitting
code (Transponder code). The code will transmitted from the key
via the coil antenna to Immobilizer Control Module when the ignition
switch is turned ON.
COIL ANTENNA
The coil antenna is installed to the steering lock assembly. As it is
energized by Immobilizer Control Module, it transmits the trans-
ponder code of the ignition key to Immobilizer Control Module.

YH4
GRAND
VITARA
8G-14 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
In cabin
-1. Main fuse
-2. Main relay
-3. Immobilizer Control Module
-4. Immobilizer diagnostic coupler
4-1. Ground terminal
4-2. Diagnostic output terminal
-5. To ECM / PCM
TABLE A DTC IS NOT OUTPUT FROM DIAGNOSTIC OUTPUT TERMINAL
STEPACTIONYESNO
1Check voltage between A3 terminal
and body ground with ignition switch
turned ON.
Is it 10 ± 14V?Go to Step 2.ª(f)º wire open.
21) Connect voltmeter between A5
terminal and body ground.
2) Does voltmeter indicator deflect?Go to Step 3.
Poor A3, A5 or A7 connection.

ª(h)º wire of A7 terminal open.

ª(m)º wire between A5 terminal and
diagnostic output terminal of immobi-
lizer diagnostic coupler short.
If wire and connections are OK, substi-
tute a known-good Immobilizer Control
Module and recheck.
NOTE:
After replacing with a known-good
Immobilizer Control Module, register
ECM/Immobilizer Control Module
code in ECM / PCM and Transponder
code and ECM/Immobilizer Control
Module code in Immobilizer Control
Module by performing procedure
described in ªProcedure after Immo-
bilizer Control Module Replace-
mentº section.
31) Connect voltmeter between diag-
nostic output terminal of immobiliz-
er diagnostic coupler and body
ground.
2) Is it possible to read DTC by check-
ing deflection of voltmeter indicator?ª(n)º wire of ground
terminal for immo-
bilizer diagnostic
coupler open.ª(m)º wire between A5 terminal and diag-
nostic output terminal of immobilizer
diagnostic coupler open.

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)
STEPACTIONYESNO
11) Turn ignition switch ON.
Do other indicator / warning lights in
combination meter come ON?Go to Step 2.ªIGº fuse blown, main fuse blown,
ignition switch malfunction,
ªB / Wº circuit between ªIGº fuse
and combination meter or poor
coupler connection at
combination meter.
21) 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 ª(b)º wire
circuit open.

YH4
GRAND
VITARA
8G-16 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
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 C IMMOBILIZER INDICATOR LAMP CHECK
(IMMOBILIZER INDICATOR LAMP REMAINS ON AFTER ENGINE
STARTS)
STEPACTIONYESNO
11) With ignition switch OFF, disconnect
couplers from ECM / PCM.
Does immobilizer indicator lamp turn ON
at ignition switch ON?ª(p)º wire shorted to
ground circuit.Substitute a known-good ECM /
PCM and recheck.

YH4
GRAND
VITARA
8G-18 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
12
3
4
1. Main fuse
2. Main relay
3. Immobilizer
Control Module
4. Coil antenna
5. To ECM / PCM 5 (a)
(f)(k)
(I)
DTC13 NO TRANSPONDER CODE TRANSMITTED OR COIL ANTENNA
OPENED/SHORTED
DESCRIPTION:
Immobilizer Control Module energizes the coil antenna when the ignition switch is ON and reads Transponder code
from the ignition key. When Immobilizer Control Module cannot read Transponder code from the ignition key even
when the coil antenna is energized, this DTC is set.
INSPECTION:
STEPACTIONYESNO
1Does ignition key being used have built-in trans-
ponder? (See Fig. 1)Go to Step 2.Replace ignition key with built-in trans-
ponder and follow ªDIAGNOSTIC
FLOW TABLEº again.
21) Disconnect coil antenna coupler with ignition
switch turned OFF.
2) Is there continuity between coil antenna cou-
pler terminals A and B?
(See Fig. 2)Go to Step 3.Coil antenna open.
3Measure resistance between terminals of coil an-
tenna coupler and body ground. (See Fig. 3)
Is it
(infinity)
?Go to Step 4.Coil antenna shorted to ground.
41) With coil antenna coupler disconnected, dis-
connect Immobilizer Control Module coupler.
2) Measure resistance between coil antenna ter-
minals of Immobilizer Control Module coupler.
(See Fig. 4)
Is it
(infinity)
?Go to Step 5.ª(k)º wire shorted to ª(l)ºwire.
5Measure resistance between terminal A1 of Im-
mobilizer Control Module coupler and body
ground.
(See Fig. 5)
Is it
(infinity)
?Go to Step 6.ª(k)º wire shorted to ground.
6Measure resistance between terminal A2 of Im-
mobilizer Control Module coupler and body
ground. (See Fig. 6)
Is it
(infinity)
?Go to Step 7.ª(I)º wire shorted to ground.
71) Connect coil antenna coupler.
2) Is there continuity between Immobilizer Con-
trol Module coupler terminals A1 and A2?
(See Fig. 7)Go to Step 8.
ª(k)º or ª(I)º wire open.

Poor coil antenna-to-coupler.