Suzuki Grand Vitara JB416 / JB420. Manual - part 368

9B-11 Lighting Systems: 

Headlight Auto Leveling System Symptom Diagnosis (If Equipped)

S5JB0A9204019

Headlight Manual Leveling System Symptom Diagnosis (If Equipped)

S5JB0A9204010

Turn Signal and Hazard Warning Light Symptom Diagnosis

S5JB0A9204002

Condition

Possible cause

Correction / Reference Item

Headlight leveling 
Warning Light comes on 
steady

Height sensor faulty

Check height sensor referring to “Height 
Sensor and Its Circuit Inspection (If 
Equipped)”.

Wiring or ground faulty

Repair circuit.

Headlight leveling control module faulty Check headlight leveling control module for 

function referring to “Inspection of Headlight 
Leveling Control Module and Its Circuit 
(Vehicle Equipped With Auto Leveling 
Headlight System)”.

Optical axes of both 
headlights do not change

Circuit fuse blown

Replace fuse and check for short circuit.

Supply voltage too low or too high

Check charging system referring to “Generator 
Test (Undercharged Battery Check) in Section 
1J” or “Generator Test (Overcharged Battery 
Check) in Section 1J”.

Wiring or ground faulty

Repair circuit.

Headlight leveling control module faulty Check headlight leveling control module for 

function referring to “Inspection of Headlight 
Leveling Control Module and Its Circuit 
(Vehicle Equipped With Auto Leveling 
Headlight System)”.

Optical axis of only one 
headlight does not 
change

Headlight levering actuator faulty

Check actuator referring to “Headlight Leveling 
Actuator Inspection (If Equipped)”.

Headlight housing deformed

Check actuator referring to “Headlight Leveling 
Actuator Inspection (If Equipped)”.

Wiring or ground faulty

Repair circuit.

Condition

Possible cause

Correction / Reference Item

Optical axes of both 
headlights do not change

Circuit fuse blown

Replace fuse and check for short circuit.

Headlight manual leveling switch faulty Check headlight manual leveling switch 

referring to “Headlight Manual Leveling Switch 
(If Equipped) Inspection”.

Supply voltage too low

Check charging system referring to “Generator 
Test (Undercharged Battery Check) in Section 
1J”.

Wiring or grounding faulty

Repair circuit.

Optical axis of only one 
headlight does not 
change

Circuit fuse blown

Replace fuse and check for short circuit.

Headlight leveling actuator faulty

Check actuator referring to “Headlight Leveling 
Actuator Inspection (If Equipped)”.

Headlight housing deformed

Replace headlight housing.

Wiring or grounding faulty

Repair circuit.

Condition

Possible cause

Correction / Reference Item

Flash rate high or one 
side only flashes

Bulb blown on “flash rate high”-side

Replace bulb.

Incorrect bulb

Replace bulb.

Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay 

referring to “Turn Signal and Hazard Warning 
Relay Inspection”.

Open circuit or high resistance existing 
either; between turn signal switch and 
non lighting bulb, or between hazard 
warning switch and non lighting bulb

Repair circuit.

Wiring or grounding faulty

Repair circuit.

Lighting Systems:  9B-12

Clearance, Tail and License Plate Light Symptom Diagnosis

S5JB0A9204003

NOTE

• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or 

output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of 
SUZUKI Scan Tool” under “Scan Tool Data in Section 10B”.

• Check each part in the order from the top of the following list.

 

Back-Up Light Symptom Diagnosis

S5JB0A9204004

No flashing

NOTE

• Use of SUZUKI scan 

tool makes it easy to 
check whether a faulty 
condition is on the 
input side or output 
side of BCM. For 
checking procedure, 
refer to “Diagnosis 
Using Output Test 
Function of SUZUKI 
Scan Tool”.

• Check each part in the 

order from the top of 
the following list.

 

Circuit fuse(s) blown

Replace fuse(s) and check for short circuit.

Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay 

referring to “Turn Signal and Hazard Warning 
Relay Inspection”.

Turn signal light switch faulty

Check turn signal light switch referring to “Turn 
Signal Light Switch (in Lighting Switch) 
Inspection”.

Hazard warning switch faulty

Check hazard warning switch referring to 
“Hazard Warning Switch Inspection”.

Open circuit or high resistance existing 
between battery and switch

Repair circuit.

Wiring or grounding faulty

Repair circuit.

BCM faulty

Replace after making sure that none of above 
parts is faulty.

Flash rate low

Supply voltage low

Check charging system.

Turn signal / hazard warning relay faulty Check turn signal / hazard warning relay 

referring to “Turn Signal and Hazard Warning 
Relay Inspection”.

Condition

Possible cause

Correction / Reference Item

Condition

Possible cause

Correction / Reference Item

All lights do not light up

Circuit fuse blown

Replace fuse and check for short circuit.

Lighting and dimmer switch of 
combination switch faulty

Check lighting and dimmer switch referring to 
“Headlight Switch (in Lighting Switch) 
Inspection”.

Wiring or grounding faulty

Repair circuit.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Some lights do not light 
up

Bulb(s) blown

Replace bulb(s).

Wiring or grounding faulty

Repair circuit.

Condition

Possible cause

Correction / Reference Item

Back-up lights do not 
light up

Bulb(s) blown

Replace bulb(s).

Circuit fuse blown

Replace fuse and check for short circuit.

Back-up light switch (M/T model) or 
transmission range sensor (A/T model) 
faulty

Check back-up light switch or transmission 
range sensor referring to “Back Up Light 
Switch Inspection in Section 5B” or 
“Transmission Range Sensor Inspection and 
Adjustment in Section 5A”.

Wiring or grounding faulty

Repair circuit.

Back-up lights stay on

Back-up light switch (M/T model) or 
transmission range sensor (A/T model) 
faulty

Check back-up light switch or transmission 
range sensor referring to “Back Up Light 
Switch Inspection in Section 5B” or 
“Transmission Range Sensor Inspection and 
Adjustment in Section 5A”.

9B-13 Lighting Systems: 

Stop (Brake) Lamp Symptom Diagnosis

S5JB0A9204005

Front Fog Light (If Equipped) Symptom Diagnosis

S5JB0A9204006

NOTE

• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or 

output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of 
SUZUKI Scan Tool” under “Scan Tool Data in Section 10B”.

• Check each part in the order from the top of the following list.

 

Rear Fog Light Symptom Diagnosis (If Equipped)

S5JB0A9204011

Illumination Cancel System Symptom Diagnosis (If Equipped)

S5JB0A9204012

Condition

Possible cause

Correction / Reference Item

Stop (brake) lamp do not 
light up

Bulb(s) blown

Replace bulb(s).

Circuit fuse blown

Replace fuse and check for short circuit.

Stop (brake) lamp switch faulty

Check stop (brake) lamp switch referring to 
“Stop (Brake) Lamp Switch Inspection”.

Wiring or grounding faulty

Repair circuit.

Stop (brake) lamp stay on Stop (brake) lamp switch faulty

Check or adjust stop (brake) lamp switch 
referring to “Stop (Brake) Lamp Switch 
Inspection” or “Brake Light Switch Adjustment 
in Section 4A”.

Condition

Possible cause

Correction / Reference Item

Only one light does not 
light

Bulb blown

Replace bulb.

Wiring or grounding faulty

Repair circuit.

Front fog lights do not 
light

Circuit fuse blown

Replace fuse and check for short circuit.

Bulbs blown

Replace bulbs.

Front fog light switch faulty

Check front fog light switch referring to “Front 
Fog Light Switch Inspection (If Equipped)”.

Front fog light relay faulty

Check front fog light relay referring to “Front 
Fog Light Relay Inspection (If Equipped)”.

Wiring or grounding faulty

Repair circuit.

BCM faulty

Check BCM for function referring to “Inspection 
of BCM and its Circuits in Section 10B”.

Condition

Possible cause

Correction / Reference Item

Rear fog light do not light Circuit fuse blown

Replace fuse and check for short circuit.

Bulb blown

Replace bulb.

Rear fog light switch faulty

Check rear fog light switch referring to “Rear 
Fog Light Switch Inspection (If Equipped)”.

Wiring or grounding faulty

Repair circuit.

Condition

Possible cause

Correction / Reference Item

Illumination cancel do not 
normal operation

Circuit fuse blown

Replace fuse and check for short circuit.

Illumination cancel switch faulty

Check illumination cancel switch referring to 
“Illumination Cancel Switch (If Equipped) 
Inspection”.

Combination meter and/or information 
display (clock) faulty

Replace combination meter and/or information 
display (clock).

Wiring or grounding faulty

Repair circuit.

Lighting Systems:  9B-14

Interior Light Symptom Diagnosis

S5JB0A9204007

NOTE

• Use of SUZUKI scan tool makes it easy to check whether a faulty condition is on the input side or 

output side of BCM. For checking procedure, refer to “Diagnosis Using Output Test Function of 
SUZUKI Scan Tool” under “Scan Tool Data in Section 10B”.

• Check each part in the order from the top of the following list.

 

Auto-On Headlight Operation Inspection (If 
Equipped)

S5JB0A9204020

1) Turn ignition switch to ON position and then turn 

lighting switch to “AUTO” position.

2) Release parking brake lever.
3) Check headlights for operation as follows. If 

headlights do not turn ON or OFF, go to “Auto-On 
Headlight System Symptom Diagnosis (If 
Equipped)”.
a) Cover auto-on headlight sensor by hand and 

check that headlights light up then.

b) Light over auto-on headlight sensor vertically 

with on incandescent lamp of approx, 100 W 
apart from about 100 mm (3.94 in.) (1) and check 
that headlights go off then.

c) In the state as described in Step a), pull up 

parking brake lever and check that headlights go 
off then.

DRL Operation Inspection (If Equipped)

S5JB0A9204013

1) Confirm that lighting switch is in OFF position.
2) Confirm that dimmer and passing switch is in low beam position.
3) Check DRL for operation as follows.

a) Turn ignition switch to ON position and check headlights remain OFF.
b) Start engine and run it at idle speed. Check headlights turn ON at low beam.
c) Switch dimmer and passing switch to high beam position and check headlights remain tuning ON at low beam.

4) If a malfunction is found, go to “DRL System Symptom Diagnosis (If Equipped)”.

Condition

Possible cause

Correction / Reference Item

Dome light does not light 
up

Bulb blown

Replace bulb.

Circuit fuse blown

Replace fuse and check for short circuit.

Dome light switch faulty

Check dome light switch.

Door switch faulty

Check door switch referring to “Door Switch 
(Front / Rear / Rear End Door) Inspection in 
Section 9C”.

Wiring or grounding

Repair circuit.

BCM faulty

Replace after making sure that none of above 
parts is faulty.

Luggage compartment 
light (if equipped) does 
not light up

Bulb blown

Replace bulb.

Back door switch faulty

Check switch referring to “Door Switch (Front / 
Rear / Rear End Door) Inspection in Section 
9C”.

Wiring or grounding faulty

Repair circuit.

[A]: Fig. for Step a)

[B]: Fig. for Step b)

[A]

[B]

1

I5JB0A920013-02