2000 SUZUKI GRAND VITARA light bulb

YH4
GRAND
VITARA
5-6 BRAKES
ConditionPossible CauseCorrection
Brake warning light
turns on after
engine start
Parking brake applied.

Insufficient amount of brake fluid.

Brake fluid leaking from brake line.

Brake warning light circuit faulty.

Malfunctioning EBD system, if equipped
with ABS.Release parking brake and check
that brake warning light turns off.
Add brake fluid.
Investigate leaky point, correct it and
add brake fluid.
Repair circuit.
Check system referring to
ªDIAGNOSISº of ABS section.
Brake warning light
turns on when
brake is applied
Brake fluid leaking from brake line.

Insufficient amount of brake fluid.Investigate leaky point, correct it and
add brake fluid.
Add brake fluid.
Brake warning light
fails to turn on
even when parking
brake is applied
Bulb burnt out.

Brake warning light circuit open.Replace bulb.
Repair circuit.
ABS warning light
does not turn on
for 2 sec. after
ignition switch has
turned ON
Bulb burnt out.

ABS warning light circuit open, if equipped
with ABS. (including check relay)Replace bulb.
Check system referring to
ªDIAGNOSISº of ABS section.
ABS warning light
remains on after
ignition switch has
turned on for 2 sec.
Malfunctioning ABS, if equipped with ABS.Check system referring to
ªDIAGNOSISº of ABS section.

YH4
GRAND
VITARA
1. Diagnosis connector
(6 pins connector)
2. Ground terminal3. Diag. switch terminal
4. Service wire
5E1-6 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
ABS HYDRAULIC UNIT/CONTROL MODULE
ASSEMBLY
ABS control module is a component of ABS hydrauli unit / control
module assembly and has the following functions.
Self-Diagnosis Function
ABS control module diagnoses conditions of the system compo-
nent parts (whether or not there is any abnormality) all the time and
indicates the results (warning of abnormality occurrence and DTC)
through the ªABSº warning lamp as described below.
1) When ignition switch is turned ON, ªABSº warning lamp lights for
2 seconds to check its bulb and circuit.
2) When no abnormality has been detected (the system is in good
condition), ªABSº warning lamp turns OFF after 2 seconds.
3) When the vehicle starts to move after the ignition switch is turned
ON (more than one wheel speed sensor signals are inputted),
solenoid valves and motor of ABS hydraulic unit operate once
one after another for electrical check.
During this check, motor operation sound may be heard but that
means nothing abnormal.
4) When an abnormality in the system is detected, ªABSº warning
lamp lights and the area where that abnormality lies is stored in
the memory of EEPROM in ABS control module.
5) When Diag. switch terminal of diagnosis connector (monitor
connector) is grounded, the abnormal area is output as DTC. It
is indicated by flashing of ªABSº warning lamp. (Refer to the
table below. )
ABS WARNING LAMP
SYSTEM CONDITIONDiag. switch
terminal is not
groundedDiag. switch
terminal is
grounded
In good condi-
No trouble in
the pastOFFDTC 12g
tion at presentTrouble occur-
red in the pastOFFHistory DTC
Abnormality
exists at
No trouble in
the pastONCurrent DTC
exists at
presentTrouble occur-
red in the pastONCurrent and
history DTCs
For procedure to clear all DTC's, refer to the item ªDiagnostic
Trouble Code Clearanceº in this section.
Also ABS control module turns ON EBD warning lamp (brake warn-
ing lamp) depending on the trouble that detected by the module and
EBD warning lamp does not indicate DTC as well as ªABSº warning
lamp.
Fail-Safe Function
When an abnormality occurs (an abnormal DTC is detected), ABS
control module turns OFF the fail-safe relay which supplies power
to ABS hydraulic unit. Thus, with ABS not operating, brakes func-
tion just like the brake system of the vehicle not equipped with ABS.

YH4
GRAND
VITARA
5E1-16 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
-1. Main fuse
-2. Ignition switch
-3. Circuit fuse for IG
-4. ªABSº warning lamp
-5. ABS hydraulic unit / control
module assembly
5-1. Fail-safe relay
5-2. To solenoid valves and
pump motor relay
(ABS hydraulic unit)
-6. Diagnosis connector
(Black connector)
6-1. Diag. switch terminal
6-2. Diag. ground terminal
-7. Combination meter
7-1. ABS lamp driver module
-8. ABS hydraulic unit/
control module connector
of harness
-9. EBD warning lamp
(Brake warning lamp)
-10. Parking brake switch
-11. Brake fluid level switch
TABLE ± A ªABSº WARNING LAMP CIRCUIT CHECK ± LAMP DOES NOT
COME ªONº AT IGNITION SWITCH ON
CIRCUIT DESCRIPTION
Operation (ON / OFF) of the ªABSº warning lamp is controlled by the ABS control module and ABS lamp driver mod-
ule.
If the Antilock brake system is in good condition, the ABS control module turns the ªABSº warning lamp ON at the
ignition switch ON, keeps it ON for 2 seconds only and then turns it OFF. If an abnormality in the system is detected,
the lamp is turned ON by ABS control module. Also, it is turned ON by ABS lamp driver module when the connector
of the ABS control module was disconnected.
INSPECTION
STEPACTIONYESNO
11) Turn ignition switch ON.
Do other warning lamp come ON?Go to step 2.Go to step 4.
21) Disconnect ABS hydraulic unit / control module
connector.
Does ABS warning lamp light with ignition switch ON?Replace ABS
hydraulic unit / control
module assembly.Go to step 3.
31) Remove combination meter.
Is bulb of ABS warning lamp in good condition?ªBl / Oº circuit shorted
to ground. If OK,
replace ABS
warning circuit (lamp
driver module).Replace bulb.
4Is IG fuse in good condition?Open in ªB / Wº wire to
combination meter or
poor connection.Repair and
replace.

YH4
GRAND
VITARA
G16 / J20 Engines
H25 Engine
1. PCM
2. J / B
3. O / D cut switch
4. P / N change switch
5. J / C
1. PCM
2. Fuse
3. O / D cut switch
4. P / N change switch
5. J / C
6. J / C
AUTOMATIC TRANSMISSION (4 A / T) 7B1-35
DIAGNOSTIC FLOW TABLE B-1 ªO / D OFFº LIGHT CIRCUIT CHECK
(ªO / D OFFº LIGHT DOESN'T LIGHT AT IGNITION SWITCH ON BUT
ENGINE STARTS UP)
WIRING DIAGRAM
TROUBLESHOOTING
STEPACTIONYESNO
1ªO / D OFFº light circuit check:
(1) With ignition switch OFF, disconnect
couplers from PCM.
(2) Using service wire, connect E61-20
(G16 / J20 engines) or E61-7 (H25 engine)
terminal of disconnected PCM coupler and
ground.
Does ªO / D OFFº light turn ON at ignition
switch ON?Poor E61-20 (G16 / J20
engines) or E61-7 (H25
engine) terminal
connection.
If OK, substitute a known-
good PCM and recheck.Bulb burned out or faulty
ªW / Bº, ªB / Wº wire.

YH4
GRAND
VITARA
G16 / J20 Engines
H25 Engine
1. PCM
2. J / B
3. O / D cut switch
4. P / N change switch
5. J / C
1. PCM
2. Fuse
3. O / D cut switch
4. P / N change switch
5. J / C
6. J / C
AUTOMATIC TRANSMISSION (4 A / T) 7B1-37
DIAGNOSTIC FLOW TABLE B-3 ªPOWERº LIGHT CIRCUIT CHECK
(ªPOWERº LIGHT DOESN'T LIGHT AT IGNITION SWITCH ON BUT
ENGINE STARTS UP)
WIRING DIAGRAM
TROUBLESHOOTING
STEPACTIONYESNO
1ªPOWERº light circuit check:
(1) With ignition switch OFF, disconnect
couplers from PCM.
(2) Using service wire, connect E61-21 (G16 /
J20 engines) or E61-10 (H25 engine)
terminal of disconnected PCM coupler and
ground.
Does ªPOWERº light turn ON at ignition switch
ON?Poor E61-21 (G16 / J20
engines) or E61-10 (H25
engine) terminal
connection.
If OK, substitute a known-
good PCM and recheck.Bulb burned out or faulty
ªGr / Blº, ªB / Wº wire.

YH4
GRAND
VITARA
6
5
1. Headlight assembly
2. Halogen bulb
3. Socket cover
4. Turn signal light bulb
5. Position light bulb
6. Turn signal light bulb socket
7. Position light bulb socket
8B-2 LIGHTING SYSTEM
GENERAL DESCRIPTION
CAUTIONS IN SERVICING
Refer to Section 8.
SYMBOLS AND MARKS
Refer to Section 8.
WIRING COLOR SYMBOLS
Refer to Section 8.
ABBREVIATIONS
Refer to Section 8.
JOINT CONNECTOR
Refer to Section 8.
FUSE BOX AND RELAY
Refer to Section 8.
POWER SUPPLY DIAGRAM
Refer to Section 8.
HEADLIGHTS

YH4
GRAND
VITARA
8B-4 LIGHTING SYSTEM
DIAGNOSIS
NOTE:
Fuse name (ª º) in the table below is shown on the fuse box cover (Hard Top Model) or the junction box
(Canvas Top Model).
HEADLIGHTS
TroublePossible causeCorrection
Only one light does not
light
Bulb blown

Headlight L or R fuse blown

Socket, wiring or grounding faultyReplace bulb
Replace fuse to check for short
Repair
Headlights do not light
Headlight L and R fuses blown

Lighting and dimmer switch faulty

Defective light relay

Wiring or grounding faultyReplace fuses to check for short
Replace switches
Replace light relay
Repair
Only one beam (ªHiº or
ªLoº) does not light
Bulb blown

Lighting or dimmer switch faultyReplace bulb
Replace switch
HEADLIGHTS WITH LEVELING SYSTEM (IF EQUIPPED)
TroublePossible causeCorrection
Both headlights do not
move
ªTURN / BACKº fuse blown (Hard Top Model)
ªTRNº fuse blown (Canvas Top Model)

Leveling switch faulty

Supply voltage too lowReplace fuse to check for short
Replace switch
Recharge or replace battery
One of headlights (either
Right or Left) does not
move
Socket, wiring or grounding faulty

Actuator faulty

Vehicle body around headlight deformed

Headlight ass'y itself deformedRepair
Replace actuator
Repair body
Replace headlight ass'y
TURN SIGNAL AND HAZARD WARNING LIGHTS
TroublePossible causeCorrection
Flash rate high or one side
only flashes
Incorrect bulb

One of light bulbs burnt out

Turn signal / hazard warning relay faulty

Open circuit or high resistance existing
Replace bulb
Replace
Replace relay
Repair
Oen circuit or high resistance existing
between turn signal / hazard warning
switch and lights on one side

Wiring or grounding faulty
Re air
Repair
No flashing
ªTURN / BACKº and / or ªHAZARDº fuse(s)
blown (Hard Top Model)
ªTRNº and / or ªHAZº fuse(s) blown
(Canvas Top Model)

Open circuit or high resistance existing
between battery and switch

Turn signal / hazard relay faulty

Combination switch or hazard switch faulty

Wiring or grounding faultyReplace fuse(s) to check for
short
Check bulb and check circuit
Replace relay
Replace switch
Repair
Flash rate low
Supply voltage too low

Turn signal / hazard relay faultyCheck charging system
Replace relay

YH4
GRAND
VITARA
LIGHTING SYSTEM 8B-5
CLEARANCE, TAIL AND LICENCE PLATE LIGHTS
TroublePossible causeCorrection
All lights do not light
ªTAILº fuse blown

Lighting switch faulty

Wiring or grounding faultyReplace fuse to check for short
Replace switch
Repair
Some lights do not light
up
Bulb(s) blown

Wiring or grounding faultyReplace bulb(s)
Repair
BACK-UP LIGHTS
TroublePossible causeCorrection
Back-up lights do not
light
ªTURN / BACKº fuse blown (Hard Top Model)
ªTRNº fuse blown (Canvas Top Model)

Bulb blown

 
  
 switch faulty

Wiring or grounding faultyReplace fuse to check for short
Replace bulb
Replace switch
Repair
Back-up lights remains
ON
Back-up light switch or shift switch faulty

Wiring or grounding faultyReplace switch
Repair
BRAKE LIGHTS
TroublePossible causeCorrection
Brake lights do not light
up
ªSTOP / HORNº fuse blown (Hard Top
Model)
ªSTPº fuse blown (Canvas Top Model)

Bulb(s) blown

Brake light switch faulty

Wiring or grounding faultyReplace fuse to check for short
Replace bulb(s)
Adjust or replace switch
Repair
Brake lights stay on
Brake light switch faultyAdjust or replace switch
Only one light does not
light
Bulb blown

Wiring or grounding faultyReplace bulb
Repair
REAR FOG LIGHT (IF EQUIPPED)
TroublePossible causeCorrection
Rear fog light does not
come on
ªFOGº fuse blown

Rear fog light switch faulty

Lighting switch faulty

Wiring or grounding faulty

Bulb blownReplace fuse to check for short
Replace fog light switch
Replace switch
Repair
Replace bulb
INTERIOR LIGHTS
TroublePossible causeCorrection
Interior light (s) does (do)
not light up
Bulb(s) blown

ªDOMEº fuse blown (Hard Top Model)
ªDOMº fuse blown (Canvas Top Model)

Wiring or grounding faulty

Door switch faulty

Interior light switch faultyReplace bulb(s)
Replace fuse to check for short
Repair
Replace switch
Replace light assy
Front spot lights do not
light up
Bulb(s) blown

Wiring or grounding faulty

Spot light switch faultyReplace bulb(s)
Repair
Replace light assy