Section 1 SUZUKI GRAND VITARA 2002 2.G Service Workshop Manual

YH4
GRAND
VITARA
WASHER
ONINT
LO
HI
Type A
Type B
Type C
WINDOWS, MIRRORS, SECURITY AND LOCKS 8D-9
Wiper
SW
Terminal
Wiper SW
Terminal
ON-VEHICLE SERVICE
WINDSHIELD WIPER AND WASHER
FRONT WIPER AND WASHER
INSPECTION
Front Wiper and Washer Switch (in Combination Switch)
1) Disconnect negative cable at battery.
2) Disconnect combination switch lead wire coupler.
3) Check for continuity between terminals at each switch position
as shown below. If check result is not as specified, replace
switch.
B3+2+1AsB3+2+1As
OFFB3WINTB3W
LOOFF
HION
REMOVAL AND INSTALLATION
For vehicle without air bag system, refer to Section 3C COMBINA-
TION SWITCH, and for vehicle with air bag system, refer to Section
3C1 CONTACT COIL AND COMBINATION SWITCH ASSEMBLY.
Wiper Motor
1) As illustrated, use a 12 V battery to connect its (+) terminal to ter-
minal ªAº, and its (±) terminal to Black lead wire (2) (Type A, B)
or terminal ªEº (Type C).
If motor (1) rotates at a low revolution speed of 45 to 55 rpm, it
is proper. For high speed check, connect battery (+) terminal to
terminal ªBº, and its (±) terminal to Black lead wire (2) (Type A,
B) or terminal ªEº (Type C). If motor rotates at a high revolution
speed of 67 to 83 rpm, it is proper.

YH4
GRAND
VITARA
WINDOWS, MIRRORS, SECURITY AND LOCKS 8D-23
POWER DOOR LOCK AND KEYLESS ENTRY SYSTEM (IF KEYLESS ENTRY IS
EQUIPPED)
SYSTEM INSPECTION
STEPACTIONYESNO
1Check power door lock operation referring to its
INSPECTION in this section.
Is this operation OK?Go to Step 2.Go to Step 3.
2Check keyless entry operation referring to its
INSPECTION in this section.
Is this operation OK?Go to Step 4.Go to Step 6.
3Check keyless entry operation referring to its
INSPECTION in this section.
Is this operation OK?Go to Step 5.Go to Step 7.
4Check hazard warning lights operation referring to
its INSPECTION in this section.
Is this operation OK?This system is OK.Go to Step 10.
5Check door lock key and power door lock switch
circuit referring to its INSPECTION in this section.
Is this circuit OK?Replace controller and
recheck.
And go to Step 4.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
And go to Step 4.
6Check ignition switch and door switch circuit
referring to its INSPECTION in this section.
Is this circuit OK?Replace controller and
recheck.
And go to Step 4.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
And go to Step 4.
7Check power door lock actuator circuit referring to
its INSPECTION in this section.
Is this circuit OK?Go to Step 8.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
If OK, go to Step 4.
If not OK, go to next
Step 8.
8Check power supply and grounding circuit
referring to its INSPECTION in this section.
Is this circuit OK?Go to Step 9.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
If OK, go to Step 4.
If not OK, go to next
Step 9.
91) Check door lock key and power door lock
switch circuit referring to its INSPECTION in
this section.
2) Check ignition switch and door switch circuit
referring to its INSPECTION in this section.
Are these circuits OK?Replace controller and
recheck.
And go to Step 4.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
And go to Step 4.

YH4
GRAND
VITARA
8D-24 WINDOWS, MIRRORS, SECURITY AND LOCKS
STEPACTIONYESNO
10Check that hazard warning lights flash with hazard
switch ON.
Is check result OK?Go to Step 11.Refer to ªTurn Signal
and Hazard Warning
Lightsº in DIAGNOSIS
and repair.
And go to Step 4.
11Check door knob switch and turn signal relay
circuit referring to its INSPECTION in this section.
Is this circuit OK?Replace controller and
recheck.Repair circuit referring
to WIRING DIAGRAM
MANUAL and recheck.
POWER DOOR LOCK OPERATION
INSPECTION
1) With the driver side door key turned LOCK, check all power
doors are locked.
2) With the driver side door key turned UNLOCK, check only the
driver side power door is unlocked.
Turn the driver side door key to UNLOCK again within 5 se-
conds, check all power doors are unlocked.
If check result of Step 1) and Step 2) is satisfactory, this operation
is OK.
KEYLESS ENTRY OPERATION
INSPECTION
1) With the IG switch OFF and all doors closed, push LOCK button
on transmitter. Check all power doors are locked.
2) Push UNLOCK button on transmitter. Check only driver side
power door is unlocked.
3) Push UNLOCK button on transmitter again within 5 seconds.
Check all power doors are unlocked.
But if any door is not opened within 30 seconds after power
door(s) unlocked, all power doors are locked again automatical-
ly.
If check result of Step 1) to Step 3) is satisfactory, this operation is
OK.
HAZARD WARNING LIGHTS OPERATION
INSPECTION
1) Check that hazard warning lights flash one time when power
doors are locked by pushing LOCK button on transmitter.
2) Check that hazard warning lights flash two times when power
door(s) is (are) unlocked by pushing UNLOCK button on trans-
mitter.
If check result of Step 1) and Step 2) is satisfactory, this operation
is OK.

YH4
GRAND
VITARA
WINDOWS, MIRRORS, SECURITY AND LOCKS 8D-27
POWER DOOR LOCK SWITCH
INSPECTION
Refer to POWER DOOR LOCK SWITCH INSPECTION of POWER
DOOR LOCK SYSTEM (IF KEYLESS ENTRY IS NOT EQUIPPED)
in this section.
KEY CYLINDER SWITCH (DRIVER SIDE)
INSPECTION
Refer to KEY CYLINDER SWITCH (DRIVER SIDE) INSPECTION
of POWER DOOR LOCK SYSTEM (IF KEYLESS ENTRY IS NOT
EQUIPPED) in this section.
POWER DOOR LOCK ACTUATOR
INSPECTION
Refer to POWER DOOR LOCK ACTUATOR INSPECTION of
POWER DOOR LOCK SYSTEM (IF KEYLESS ENTRY IS NOT
EQUIPPED) in this section.

YH4
GRAND
VITARA
8D-32 WINDOWS, MIRRORS, SECURITY AND LOCKS
3. To open
4. To close
3. Left turn
4. Right turn
Terminal
Switch
Terminal
Switch
POWER SLIDING ROOF (IF EQUIPPED)
INSPECTION
SLIDING ROOF SWITCH
Check switch for continuity between terminals as shown below.
Slide Switch (1)
CDFCDF
OPEN
OFF
CLOSE
Tilt Switch (2)
EDBEDB
UP
OFF
DOWN
SLIDING ROOF MOTOR ASSEMBLY
1) Remove head lining. Refer to Section 9 for detail.
2) Remove sliding roof motor assembly (1).
3) Connect known-good sliding roof switch (2) to sliding roof motor
assembly.
4) Connect 12 V battery positive terminal to terminal ªAº of motor
assembly (1) and battery negative terminal to terminal ªBº of mo-
tor assembly (1).
5) Check that the sliding roof motor (1) runs according to the move-
ment of the sliding roof switch (2).
Sliding Roof Switch
Motor
Tilt upturns left
Tilt downturns right
Slide openturns right
Slide closeturns left
If motor does not operate as above, replace sliding roof motor
assembly (1).

YH4
GRAND
VITARA
8G
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-1
GENERAL DESCRIPTION8G- 2 . . . . . . . . . . . . . .
Ignition Key 8G- 3. . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Antenna 8G- 3. . . . . . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Module 8G- 4. . . . . . . . . . . .
ECM/PCM 8G- 4. . . . . . . . . . . . . . . . . . . . . . . . . . .
On-Board Diagnostic System
(Self-Diagnosis Function) 8G- 4. . . . . . . . . . . . .
DIAGNOSIS8G- 6 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautions in Diagnosing Troubles 8G- 6. . . . .
Diagnostic Flow Table with monitor coupler> 8G- 9. . . . . . . . . . . . . . . .
Diagnostic Flow Table equipped with monitor coupler> 8G-10. . . . . . .
Diagnostic Trouble Code Check
(Immobilizer Control Module) 8G-11. . . . . . . .
Diagnostic Trouble Code Check
(ECM / PCM) 8G-11. . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code Table 8G-13. . . . . . . . .
TABLE A DTC is not Output
from Diagnostic Output Terminal 8G-14. . . . . . .
TABLE B Immobilizer Indicator Lamp
Check (Immobilizer Indicator Lamp
does not Light at Ignition Switch ON) 8G-15. . .
TABLE C Immobilizer Indicator Lamp
Check (Immobilizer Indicator Lamp
Remains on after Engine Starts) 8G-16. . . . . . .
DTC11 Transponder Code Not Matched8G-17 . .
DTC31 Transponder Code Not
Registered 8G-17. . . . . . . . . . . . . . . . . . . . . . . . .
DTC12 Fault in Immobilizer
Control Module 8G-17. . . . . . . . . . . . . . . . . . . . . .
DTC13 No Transponder Code Transmitted
or Coil Antenna Opened/Shorted 8G-18. . . . . . DTC21 ECM/Immobilizer Control Module
Code Not Matched (Immobilizer Control
Module Side) 8G-20. . . . . . . . . . . . . . . . . . . . . . .
DTC81 (P1623) ECM/Immobilizer
Control Module Code Not Matched
(ECM/PCM Side) 8G-20. . . . . . . . . . . . . . . . . . . .
DTC84 (P1620) ECM/Immobilizer Control
Module Code Not Registered 8G-20. . . . . . . . .
DTC22 Ignition Switch Circuit Open/Short8G-21 . .
DTC23 No ECM/Immobilizer Control
Module Code Transmitted from ECM/
PCM or DLC Circuit Opened/Shorted8G-22 . . . .
DTC83 (P1621) No ECM/Immobilizer
Control Module Code Transmitted from
Immobilizer Control Module or DLC
Circuit Opened/Shorted 8G-22. . . . . . . . . . . . . .
DTC82 (P1622) Fault in ECM/PCM 8G-23. . . . .
Inspection of ECM/PCM, Immobilizer
Control Module and Its Circuit 8G-24. . . . . . . . .
Voltage Check 8G-24. . . . . . . . . . . . . . . . . . . . .
Resistance Check 8G-25. . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE8G-26 . . . . . . . . . . . . . . . .
Precautions in Handling Immobilizer
Control System 8G-26. . . . . . . . . . . . . . . . . . . . .
Immobilizer Control Module 8G-27. . . . . . . . . . . .
Coil Antenna 8G-27. . . . . . . . . . . . . . . . . . . . . . . . .
HOW TO REGISTER IGNITION KEY8G-28 . . . . .
PROCEDURE AFTER IMMOBILIZER
CONTROL MODULE REPLACEMENT8G-29 . .
PROCEDURE AFTER ECM/PCM
REPLACEMENT8G-30 . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS8G-30 . . . . . . . . . . . . . . . . . . . . . .
SECTION 8G
IMMOBILIZER CONTROL SYSTEM
(IF EQUIPPED)
WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System

Service on and around the air bag system components or wiring must be performed only by an autho-
rized SUZUKI dealer. Refer to ªAir Bag System Components and Wiring Location Viewº under ªGener-
al Descriptionº in air bag system section in order to confirm whether you are performing service on
or near the air bag system components or wiring. Please observe all WARNINGS and ªService Precau-
tionsº under ªOn-Vehicle Serviceº in air bag system section before performing service on or around
the air bag system components or wiring. Failure to follow WARNINGS could result in unintentional
activation of the system or could render the system inoperative. Either of these two conditions may
result in severe injury.

Technical service work must be started at least 90 seconds after the ignition switch is turned to the
ªLOCKº position and the negative cable is disconnected from the battery. Otherwise, the system may
be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
CONTENTS

YH4
GRAND
VITARA
1. Immobilizer Control Module
8G-4 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
IMMOBILIZER CONTROL MODULE
Immobilizer Control Module is installed to the underside of the
instrument panel at the driver's seat side.
As main functions, Immobilizer Control Module checks matching
not only between the Transponder Code transmitted from the igni-
tion key and that registered in Immobilizer Control Module (Up to
4 different Transponder codes can be registered.) but also between
the ECM/Immobilizer Control Module code transmitted from
ECM / PCM and that registered in Immobilizer Control Module. In
addition, it has an on-board diagnostic system (self-diagnosis func-
tion) which is described in ªOn-Board Diagnostic System (Self-
Diagnosis Function)º in this section.
ECM / PCM
As main functions, ECM / PCM not only checks matching of ECM/
Immobilizer Control Module code but also has an on-board diag-
nostic system (self-diagnosis function) as described in ªOn-Board
Diagnostic System (Self-Diagnosis Function)º in this section.
For installation position of ECM / PCM, refer to Section 6E1 or 6E2.
ON-BOARD DIAGNOSTIC SYSTEM
(SELF-DIAGNOSIS FUNCTION)
Immobilizer Control Module and ECM / PCM diagnose troubles
which may occur in the area including the following parts when the
ignition switch is ON.
ECM /
ECM/Immobilizer Immobilizer
Transponder code
PCM: Control Module Control
Coil antenna
code Module:
ECM/Immobilizer

Serial data link
Control Module code
circuit
Serial data link circuit

ECM / PCM
Immobilizer Control

Module

Ignition signal

YH4
GRAND
VITARA
0.5TIME (sec.) Ignition switch ON
High Immobilizer
control system
is normal
Immobilizer
control system
is abnormalLow
0.5 0.5 0.5 0.5
High
Low
0.5TIME (sec.) Ignition switch ON
High Immobilizer
control system
is normal
Immobilizer
control system
is abnormalLow
0.5 0.5 0.5 0.5
High
Low
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-5

With the diagnosis switch terminal of monitor coupler for
ECM / PCM not grounded, the ignition switch turned ON (but the en-
gine at stop) and regardless of the condition of the electronic fuel
injection system, ECM / PCM indicates whether a trouble has oc-
curred in the immobilizer control system or not by causing the mal-
function indicator lamp to flash or turn ON.
Malfunction indicator lamp is ON:
No trouble exists in the immobilizer control system.
Malfunction indicator lamp is flashing:
ECM / PCM or Immobilizer Control Module has detected some
trouble in the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM / PCM and Im-
mobilizer Control Module diagnose if a trouble has occurred
in the immobilizer control system. While the diagnosis is being
made, the malfunction indicator lamp stays ON and if the diag-
nosis result is ªabnormalº, it immediately changes to flashing
but if the result is ªnormalº, it remains ON. Diagnosis takes
about 3 seconds at maximum.

With the ignition switch turned ON (but the engine at stop) regard-
less of the condition of the electronic fuel injection system,
ECM / PCM indicates whether a trouble has occurred in the immobi-
lizer control system or not by causing the immobilizer indicator lamp
to flash or turn ON.
Immobilizer indicator lamp is ON:
No trouble exists in the immobilizer control system.
Immobilizer indicator lamp is flashing:
ECM / PCM or Immobilizer Control Module has detected some
trouble in the immobilizer control system.
NOTE:
As soon as the ignition switch is turned ON, ECM / PCM and Im-
mobilizer Control Module diagnose if a trouble has occurred
in the immobilizer control system. While the diagnosis is being
made, the Immobilizer indicator lamp stays ON and if the diag-
nosis result is ªabnormalº, it immediately changes to flashing
but if the result is ªnormalº, it remains ON. Diagnosis takes
about 3 seconds at maximum.
When ECM / PCM and Immobilizer Control Module detects a
trouble which has occurred in the above areas, it stores DTC corre-
sponding to the exact trouble area in ECM / PCM and Immobilizer
Control Module memory.
DTCs stored in memory of each controller (Immobilizer Control
Module and ECM / PCM) can be read by using the procedure de-
scribed in ªDIAGNOSTIC TROUBLE CODE CHECK (IMMOBILIZ-
ER CONTROL MODULE)º and ªDIAGNOSTIC TROUBLE CODE
CHECK (ECM / PCM)º in this section.

YH4
GRAND
VITARA
8G-8 IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED)
[NOTES ON SYSTEM CIRCUIT INSPECTION]
Refer to ªPrecautions for Electrical Circuit Serviceº and ªIntermit-
tents and Poor Connectionº in Section 0A.
[Precaution after replacing ECM / PCM or Immobilizer Control Mod-
ule]

When ECM / PCM was replaced, including when replaced be-
cause rechecking by using a known-good ECM / PCM was neces-
sary during trouble diagnosis, the ECM/Immobilizer Control Mod-
ule code must be registered in ECM / PCM and Immobilizer
Control Module by performing procedure described in ªProce-
dure after ECM / PCM Replacementº on p. 8G-27. If it is not regis-
tered, the engine would not start and accurate trouble diagnosis
would not be assured.

When Immobilizer Control Module was replaced, including when
replaced because rechecking by using a known-good Immobiliz-
er Control Module was necessary during trouble diagnosis, the
Transponder code and ECM/Immobilizer Control Module code
must be registered in Immobilizer Control Module and ECM/Im-
mobilizer Control Module code in ECM / PCM by performing pro-
cedure described in ªProcedure after Immobilizer Control Module
Replacementº on p. 8G-26. If they are not registered, the engine
would not start and accurate trouble diagnosis would not be as-
sured.

YH4
GRAND
VITARA
IMMOBILIZER CONTROL SYSTEM (IF EQUIPPED) 8G-9
Fig. 1 for Step 1 Fig. 2 for Step 1 Fig. 3 for Step 2
1. Monitor coupler
2. Service wire
A: Diagnosis switch terminal
B: Ground terminal
Fig. 4 for Step 3
ªCHECK ENGINEº light
0.5
ON
OFF
TIME (sec.)
DIAGNOSTIC FLOW TABLE

STEPACTIONYESNO
11) Make sure that diagnosis switch
terminal in monitor coupler is not
grounded by service wire. See Fig. 1.
2) Check malfunction indicator lamp
while ignition switch is ON (but without
starting engine). See Fig. 2.
Dose malfunction indicator lamp flash?Go to Step 3.
If malfunction indicator lamp
remains ON, go to Step 2.

If malfunction indicator lamp
remains OFF, go to
ªMALFUNCTION INDICATOR
LAMP CHECKº in Section 6.
21) Using service wire, ground diagnosis
switch terminal in monitor coupler.
See Fig. 3.
Dose malfunction indicator lamp flash?Immobilizer control
system is in good
condition.Go to ªMALFUNCTION
INDICATOR LAMP CHECKº in
Section 6.
3Dose malfunction indicator lamp flash as
Fig. 4?Go to Step 4.Go to ªMALFUNCTION
INDICATOR LAMP CHECKº in
Section 6.
41) Check DTC stored in immobilizer
control module referring to
ªDIAGNOSTIC TROUBLE CODE
CHECK (IMMOBILIZER CONTROL
MODULE)º in this section.
Is there any DTC(s)?Go to flow table for
DTC No.Go to Step 5.
51) Check DTC stored in ECM/PCM
referring to ªDIAGNOSTIC TROUBLE
CODE CHECK (ECM / PCM)º in this
section.
Is there any DTC(s)?Go to flow table for
DTC No.Substitute a known-good ECM/
PCM and recheck.
NOTE:
After replacing with a known-
good ECM/PCM, register
ECM / Immobilizer Control
Module code in ECM/PCM by
performing procedure described
in ªProcedure after ECM/PCM
Replacementº section.