2003 SUZUKI GRAND VITARA Door lock

YH4
GRAND
VITARA
8D-8 WINDOWS, MIRRORS, SECURITY AND LOCKS
POWER DOOR MIRROR CONTROL SYSTEM
TroublePossible causeCorrection
All power mirrors do not
operate
ªCIGARº fuse blown (Hard Top Model)
ªCIGº fuse blown (Canvas Top Model)

Power door mirror switch faulty

Wiring or grounding faultyReplace fuse to check for short
Replace switch
Repair
One power mirror does
not operate
Power door mirror switch faulty

Actuator (power door mirror motor) faulty

Wiring or grounding faultyReplace switch
Replace actuator
Repair
DOOR MIRROR HEATER (IF EQUIPPED)
TroublePossible causeCorrection
The surface of mirror is
not defrosted although
door mirror heater
switch is ON
ªREAR DEFGº fuse blown (Hard Top Model)
ªDEFº fuse blown (Canvas Top Model)

Door mirror heater switch faulty

Door mirror heater faulty

Wiring or grounding faultyReplace fuse to check for short
Replace switch
Replace outside mirror
Repair
POWER SLIDING ROOF (IF EQUIPPED)
TroublePossible causeCorrection
Sliding roof does not
operate (sliding roof
motor runs OK)
Foreign object stuck in sliding roof rail

Misinstallation of sliding roof rail

Conflicts of sliding roof parts

Misinstallation of sliding roof drive cableRemove or clean stuck object
Install correctly
Fix conflicts
Install correctly
Sliding roof does not
operate (sliding roof
motor does not run)
ªSUN ROOFº fuse blown

Sliding roof switch faulty

Sliding roof motor ass'y faulty

Wiring or grounding faultyReplace fuse to check for short
Replace switch
Replace motor
Repair
FRONT SEAT HEATER (IF EQUIPPED)
TroublePossible causeCorrection
Both seat back and
cushion do not become
hot although seat heater
switch is LO / HI position
ªSEAT HTRº fuse blown (Hard Top Model)
ªS / Hº fuse blown (Canvas Top Model)

Seat heater switch faulty

Seat heater circuit in seat back and / or seat
cushion faulty

Wiring or grounding faultyReplace fuse to check for short
Replace switch
Replace heater front back and /
or heater front cushion
Repair
Only seat back does not
become hot although seat
heater switch is HI
position
Seat heater circuit in seat back faulty
(Hard Top Model)

Seat heater circuit in seat back and / or seat
cushion faulty (Canvas Top Model)

Seat heater switch faulty

Wiring faultyReplace heater front back
Replace heater front back
and / or heater front cushion
Replace switch
Repair
Only seat cushion does
not become hot although
seat heater switch is HI
position
Seat heater circuit in seat back and / or seat
cushion faulty (Hard Top Model)

Seat heater circuit in seat cushion
(Canvas Top Model)

Seat heater switch faulty

Wiring faultyReplace heater front back
and / or heater front cushion
Replace heater front cushion
Replace switch
Repair

YH4
GRAND
VITARA
Terminal
Switch
Type 1
Type 2
1. Door lock switch
2. Door lock switch coupler
Terminal
Switch
8D-20 WINDOWS, MIRRORS, SECURITY AND LOCKS
POWER DOOR LOCK SYSTEM (IF KEYLESS
ENTRY IS NOT EQUIPPED)
INSPECTION
POWER DOOR LOCK SWITCH
Check for continuity between terminals at each switch position as
shown below.
Type 1
ALK
LOCK
NEUTRAL
UNLOCK
Type 2
ABF
LOCK
OFF
UNLOCK
POWER DOOR LOCK CONTROLLER (CANVAS TOP
MODEL)
1) Disconnect power door lock controller coupler.
2) Connect (+) wire and (±) wire of 12 V battery to terminal ªAº, ªEº
and ªFº as shown in figure.
3) Disconnect cord from terminal ªEº and connect it to terminal ªGº.
4) Repeat Steps 2) and 3) several times and if relay operation is
heard every time, it means that controller is operating.
POWER DOOR LOCK CONTROLLER (HARD TOP MODEL)
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, power door lock
controller is OK. If check result is not satisfactory, go to next Step 3).
3) Disconnect negative cable at battery.
4) Disconnect coupler of power door lock controller.
5) Use a 12 V battery to connect its (+) terminal to terminal E02-1,
and its (±) terminal to terminal E02-2 and E02-3. Check all power
doors are locked.
If check result is not satisfactory, repair circuit and recheck.
If check result is satisfactory, go to next Step 6).

YH4
GRAND
VITARA
Terminal
Key
WINDOWS, MIRRORS, SECURITY AND LOCKS 8D-21
6) Connect negative cable at battery.
7) Check that the voltage and resistance between following termi-
nals are specifications.
Terminals
ConditionSpecification
E02-7 and
groundAnytime10 ± 14 V
E02-14 and
groundAnytimecontinuity
E02-8 and
When driver side door key
switch is OFF positionNo continuity
groundWhen driver side door key
switch is LOCK positionContinuity
E02-9 and
When driver side door key
switch is OFF positionNo continuity
groundWhen driver side door key
switch is UNLOCK positionContinuity
If check result is not satisfactory, repair circuit and recheck.
If check result is satisfactory, replace controller.
KEY CYLINDER SWITCH (DRIVER SIDE)
Check for continuity between terminals according to the key action
shown below.
321
LOCK
OFF
UNLOCK

YH4
GRAND
VITARA
Operation
Terminal Front Door
Rear Door
Back Door (except Canvas Top Model)
LOCK
UNLOCK
LOCK
UNLOCK
LOCK
UNLOCK
8D-22 WINDOWS, MIRRORS, SECURITY AND LOCKS
POWER DOOR LOCK ACTUATOR
1) Disconnect power door lock actuator coupler.
2) Connect 12 V battery positive and negative terminals to the door
lock actuator terminals shown below and check operation.
If it does not operate as specified in table below, replace door
lock actuator.
UNLOCKLOCK
2

3


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-25
POWER DOOR LOCK ACTUATOR CIRCUIT
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect coupler of power door lock and keyless entry con-
troller.
3) Use a 12 V battery to connect its (+) terminal to terminal E02-1,
and its (±) terminal to terminal E02-2 and E02-3. Check all power
doors are locked.
If check result is satisfactory, this circuit is OK.
POWER SUPPLY AND GROUNDING CIRCUIT
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect coupler of power door lock and keyless entry con-
troller, and connect negative cable at battery.
3) Check that the voltage and resistance between following termi-
nals are specifications.
Terminals
ConditionSpecification
E02-7 and
groundAnytime10 ± 14 V
E02-14 and
groundAnytimeContinuity
If check result is satisfactory, this circuit is OK.
DOOR LOCK KEY AND POWER DOOR LOCK SWITCH
CIRCUIT
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect coupler of power door lock and keyless entry con-
troller.
3) Check for continuity between following terminals at each condi-
tion.
Terminals
ConditionSpecification
E02-8 and
When driver side door key
switch is OFF positionNo continuity
groundWhen driver side door key
switch is LOCK positionContinuity
E02-9 and
When driver side door key
switch is OFF positionNo continuity
groundWhen driver side door key
switch is UNLOCK positionContinuity
If check result is satisfactory, this circuit is OK.

YH4
GRAND
VITARA
8D-26 WINDOWS, MIRRORS, SECURITY AND LOCKS
IGNITION SWITCH AND DOOR SWITCH CIRCUIT
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect coupler of power door lock and keyless entry con-
troller, and connect negative cable at battery.
3) Check that the voltage and resistance between following termi-
nals are specifications.
Terminals
ConditionSpecification
E02-4 and
When ignition switch is OFF
position0 V
groundWhen ignition switch is ON
position10 ± 14 V
E02 10 andWhen all doors are closedNo continuityE02-10 and
groundWhen any one door is
openedContinuity
If check result is satisfactory, this circuit is OK.
DOOR KNOB SWITCH AND TURN SIGNAL RELAY CIRCUIT
INSPECTION
1) Disconnect negative cable at battery.
2) Disconnect coupler of power door lock and keyless entry con-
troller, and connect negative cable at battery.
3) Check that the voltage and resistance between following termi-
nals are specifications.
Terminals
ConditionSpecification
E02-6 and
groundAnytime10 ± 14 V
E02-11 and
When driver side door lock
knob is pulled upContinuity
groundWhen driver side door lock
knob is pushed downNo continuity
If check result is satisfactory, this circuit is OK.