Warning engine light SUZUKI SWIFT 2008 2.G Service Repair Manual
Page 1048 of 1496
Downloaded from www.Manualslib.com manuals search engine 8B-10 Air Bag System: 
Diagnostic Information and Procedures
Air Bag Diagnostic System CheckS7RS0B8204001
WARNING! 
To avoid deployment when troubleshooting 
the air bag system, do not use electrical test 
equipment such as a battery powered or AC 
powered voltmeter, ohmmeter, etc., or any 
type of electrical equipment other than that 
specified in this manual. Do not use a non-
powered probe type tester.
Instructions in this manual must be followed 
carefully, otherwise personal injury may 
result.
 
CAUTION! 
The order in which DTCs are diagnosed is 
very important. Failure to diagnose the DTCs 
in the order specified may result in extended 
diagnostic time, incorrect diagnosis and 
incorrect parts replacement.
 
The diagnostic procedures used are designed to find 
and repair air bag system malfunctions.
To get the best results, it is important to use the 
diagnostic flow and follow the sequence in the following.1) Perform the “Air Bag Diagnostic System Check  Flow”.
(The “Air Bag Diagnostic System Check Flow” must 
be the starting point of any air bag system diagnosis.
The “Air Bag Diagnostic System Check Flow” checks 
for proper “AIR BAG” warning right operation 
through “AIR BAG” warning right and whether air 
bag DTCs exist.)
2) Refer to the proper diagnost ic flow as directed by the 
“Air Bag Diagnostic System Check Flow”.
(The “Air Bag Diagnostic System Check Flow” will 
lead you to the correct flow to diagnose any air bag 
system malfunctions. Bypassing these procedures 
may result in extended diagnostic time, incorrect 
diagnosis and incorrect parts replacement.)
3) Repeat the “Air Bag Diagnostic System Check Flow”  after any repair or diagnostic procedures have been 
performed.
(Performing the “Air Bag Diagnostic System Check 
Flow” after all repair or  diagnostic procedures will 
ensure that the repair has been made correctly and 
that no other malfunctions exist.)
Air Bag Diagnostic System Check FlowS7RS0B8204002
Flow test description
Step 1: Check that “AIR BAG” warning right lights.
Step 2: Check that “AIR BAG” warning right lights.
Step 3: Check that “AIR BAG” warning right flas hes 6 times after ignition switch is turned ON.
Step 4: Check that history codes are in SDM memory.
Step 5: Check that current code is in SDM memory.
6. “A/BAG” fuse in junction block assembly (including  BCM) 13. Side curtain-air bag (inflator) module (if equipped)
7. Air bag harness in floor harness 14. Air bag harness in instrument panel harness
Step Action YesNo
1 1) Make sure that battery voltage is about 11 V or higher.
2) Note “AIR BAG” warning right  as ignition switch is turned 
ON.
Does “AIR BAG” warning ri ght come ON when ignition 
switch is turned ON? Go to Step 2.
Proceed to ““AIR BAG” 
Warning Right Does Not 
Come ON”.
2 Does “AIR BAG” warning  right come ON steady? Proceed to ““AIR BAG” 
Warning Right Comes 
ON Steady”.Go to Step 3.
3 Does “AIR BAG” warning right  turn OFF, after flashing 6 
times? “AIR BAG” warning right 
circuit is in good 
condition. Go to Step 4.“AIR BAG” warning right 
circuit is in good 
condition. Go to Step 5.  
Page 1053 of 1496
Downloaded from www.Manualslib.com manuals search engine Air Bag System:  8B-15
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.
 
“AIR BAG” Warning Right Does Not Come ONS7RS0B8204008
Wiring Diagram6 1) Disconnect combination meter connector “G28” referring 
to “Combination Meter Removal and Installation in 
Section 9C”.
2) Check proper connection to combination meter at “YEL/ BLK” terminal for “AIR BAG”  warning right and to SDM at 
terminal “L29-2”.
3) If OK, then check resistance between “YEL/BLK” wire  terminal of combination meter connector “G28” and 
“L29-2” terminal of SDM connector.
Special tool
(A):  09932-76010
Is resistance 1 
Ω or less? Substitute a known-
good SDM and recheck. 
If “AIR BAG” warning 
right remain lighting, 
replace combination 
meter.
“YEL/BLK” wire 
(between combination 
meter and SDM 
connector) open or 
short to ground.
Step Action Yes No
"L29-2"
"G28-12"
(A)
I7RS0A820006-02
12 GRN
11
BLK
L29-27
L29-2
L29-28 WL
E1
IG
L29-32
ST
10
8
“L29”
RED
PPL/WHT
7
3
4 “L04”
“G34”
“G33”
“G28”
“G32”
5 6
“G32”
YEL/BLK
YEL/BLK
RED/BLK
9
I7RS0B820002-02
1. From main fuse 5. “AIR BAG” warning right in combination meter 9. To DLC
2. Ignition switch 6. Lamp driver 10. SDM
3. “METER” fuse 7. Junction block assembly 11. Ground for air bag system
4. “A/BAG” fuse 8. BCM  
Page 1167 of 1496
Downloaded from www.Manualslib.com manuals search engine Table of Contents 9- i
9
Section 9
CONTENTS
Body, Cab and Accessories
Precautions ................................................. 9-1
Precautions............................................................. 9-1
Precautions on Body, Cab and Accessories ......... 9-1
Precautions for Body Service ................................ 9-1
Fastener Caution for Body Service ....................... 9-1
Wiring Systems............... ......................... 9A-1
Precautions........................................................... 9A-1
Cautions in Body Electrical  System Servicing..... 9A-1
General Description ............................................. 9A-1 Abbreviations ...................................................... 9A-1
Wire / Connector Color Sy mbols ......................... 9A-1
Symbols and Marks ............................................ 9A-2
How to Read Connector Layout Diagram ........... 9A-4
How to Read Connector Codes and Terminal  Nos.................................................................... 9A-5
How to Read Ground Point ................................. 9A-7
How to Read Power Supply Diagram.................. 9A-8
How to Read System Circuit Diagram................. 9A-8
Connector Layout Diagram . .............................. 9A-10
Connector Layout Diagram ............................... 9A-10
Engine Compartment .......... .............................. 9A-10
Instrument Panel ............................................... 9A-16
Door, Roof......................................................... 9A-20
Floor .................................................................. 9A-23
Rear .................................................................. 9A-29
Ground Point ...................................................... 9A-30 Ground (earth) Point ......................................... 9A-30
Power Supply Diagram ........ .............................. 9A-31
Power Supply Diagram ....... .............................. 9A-31
Fuses and the Protected Parts ......................... 9A-33
Fuses in Main Fuse Box  (RHD) ........................ 9A-33
Fuses in Main Fuse Box  (LHD) ......................... 9A-33
Individual Circuit Fuse Box No. 1 ...................... 9A-34
Individual Circuit Fuse Box No. 2 (In J/B) ......... 9A-35
Junction Block (J/B) Connector / Fuse Layout .. 9A-37
Junction Block Inner Circuit  (Overview) ............ 9A-38
Junction Block Inner Circuit  (Detail) .................. 9A-40
System Circuit Diagram... .................................. 9A-45
System Circuit Diagram .. .................................. 9A-45
A-1 Cranking System Circ uit Diagram .............. 9A-46
A-2 Charging System Circu it Diagram .............. 9A-47
A-3 Ignition System Circu it Diagram ................. 9A-48
A-4 Cooling System Circuit Diagram................. 9A-49 A-5 Engine and A/C Control System Circuit 
Diagram........................................................... 9A-50
A-6 A/T Control System Circuit Diagram........... 9A-55
A-7 Immobilizer System Circuit Diagram .......... 9A-57
A-8 Body Control System Circuit Diagram ........ 9A-58
B-1 Windshield Wiper and Washer Circuit  Diagram........................................................... 9A-62
B-2 Rear Wiper and Washer Circuit Diagram ... 9A-63
B-3 Rear Defogger Circuit Diagram .................. 9A-64
B-4 Power Window Circuit  Diagram .................. 9A-65
B-5 Power Door Lock Circu it Diagram .............. 9A-67
B-6 Power Mirror Circuit Diagram ..................... 9A-69
B-7 Horn Circuit Diagram .................................. 9A-70
B-8 Seat Heater Circuit Diagram....................... 9A-71
B-9 Keyless Start System Circuit Diagram........ 9A-72
C-1 Combination Mete r Circuit Diagram 
(Meter)............................................................. 9A-73
C-2 Combination Mete r Circuit Diagram 
(Indicator) ........................................................ 9A-74
C-3 Combination Mete r Circuit Diagram 
(Warning Light)................................................ 9A-75
D-1 Headlight System Circuit Diagram ............. 9A-77
D-2 Position, Tail and Licence Plate Light  System Circuit Diagram .................................. 9A-79
D-3 Front Fog Light System Circuit Diagram .... 9A-80
D-4 Illumination Light System Circuit Diagram .. 9A-81
D-5 Interior Light System  Circuit Diagram......... 9A-82
D-6 Turn Signal and Hazard Warning Light  System Circuit Diagram .................................. 9A-83
D-7 Brake Light System Circuit Diagram .......... 9A-85
D-8 Back-Up Light System Circuit Diagram ...... 9A-86
D-9 Headlight Beam Leveling System Circuit  Diagram........................................................... 9A-87
D-10 Rear Fog Light Circuit  Diagram ................ 9A-88
E-1 Heater System Circuit Diagram .................. 9A-89
E-2 Auto A/C System Circuit Diagram .............. 9A-91
F-1 Air-Bag System Circuit Diagram ................. 9A-93
F-2 Anti-Lock Brake System  Circuit Diagram.... 9A-95
F-3 Electronic Stab ility Program System 
Circuit Diagram .................. ............................. 9A-97
F-4 Power Steering System  Circuit Diagram .... 9A-99
G-1 Audio System Circuit  Diagram ................. 9A-101
G-2 Multi Information Display / Accessory  Socket System Circuit Diagram .................... 9A-102
List of Connector .............................................9A-103  
Page 1168 of 1496
Downloaded from www.Manualslib.com manuals search engine 9-ii Table of Contents
List of Connectors ........................................... 9A-103
C Connector .................................................... 9A-103
D Connector (M16A engine) ........................... 9A-104
E Connector .................................................... 9A-104
G Connector .................................................... 9A-106
J Connector ..................................................... 9A-108
K Connector .................................................... 9A-109
L Connector..................................................... 9A-109
M Connector (SPORT model) ......................... 9A-111
O Connector .................................................... 9A-111
R Connector .................................................... 9A-111
Lighting Systems .................................... 9B-1
Component Location ........... ................................9B-1
Lighting System Component s Location............... 9B-1
Interior Light System Location............................. 9B-2
Diagnostic Information and Procedures ............ 9B-2 Headlight Symptom Diagnosis ............................ 9B-2
Headlight Leveling System Symptom Diagnosis (If Equipped) ..................................... 9B-2
Turn Signal and Hazard Warning Light  Symptom Diagnosis .......................................... 9B-3
Clearance, Tail and License Plate Light  Symptom Diagnosis .......................................... 9B-3
Back-Up Light Symptom Diagnosis..................... 9B-4
Brake Light Symptom Diagnosis ......................... 9B-4
Front Fog Light Symptom Diagnosis (If  Equipped) .......................................................... 9B-4
Interior Light Symptom Diagnosis ....................... 9B-5
Repair Instructions ..............................................9B-5 Headlight Housing Removal and Installation ...... 9B-5
Headlight Bulb Replacemen t............................... 9B-6
Headlight Aiming Adjustment with Screen .......... 9B-6
Headlight Switch (in Lighting Switch)  Removal and Installation ................................... 9B-8
Headlight Switch (in Lighting Switch)  Inspection .......................................................... 9B-8
Hazard Warning Switch Removal and  Installation ......................................................... 9B-8
Hazard Warning Switch Inspection ..................... 9B-9
Brake Light Switch Inspection ............................. 9B-9
Turn Signal Light Switch (in Lighting Switch)  Removal and Installation ................................... 9B-9
Turn Signal Light Switch (in Lighting Switch)  Inspection .......................................................... 9B-9
Turn Signal and Hazard Warning Relay  Removal and Installation ................................... 9B-9
Turn Signal and Hazard Warning Relay  Inspection ........................................................ 9B-10
License Light Removal and Installation............. 9B-10
Front Fog Light Removal and Installation (If  Equipped) ........................................................ 9B-11
Front Fog Light Bulb Replacement (If  Equipped) ........................................................ 9B-11
Front Fog Light Switch Inspection (If  Equipped) ........................................................ 9B-11
Front Fog Light Relay Inspection (If  Equipped) ........................................................ 9B-11
Front Fog Light Aiming Adjustment with  Screen (If Equipped) ....................................... 9B-12 Headlight Leveling Switch Inspection (If 
Equipped) ........................................................ 9B-13
Headlight Leveling Actuator Inspection (If  Equipped) ........................................................ 9B-13
Instrumentation / Driver Info. / Horn ...... 9C-1
Precautions ...........................................................9C-1 Precautions in Diagnosing Troubles for Combination Meter ............................................9C-1
General Description .............................................9C-1 CAN Communication System Description...........9C-1
Auto Volume Co ntrol System Description (If 
Equipped) ..........................................................9C-3
Schematic and Routing Diagram ........................9C-4 Combination Meter Circuit Diagram ....................9C-4
Component Location ............ ...............................9C-6
Audio System Component Location ....................9C-6
Diagnostic Information and Procedures ............9C-6 Speedometer and VSS Symp tom Diagnosis ......9C-6
Tachometer Symptom Diagnosis ........................9C-6
Engine Coolant Temperature (ECT) Meter  Symptom Diagnosis ..........................................9C-7
Fuel Meter Symptom Diagnosis ..........................9C-7
Low Fuel Warning Light Symptom Diagnosis .....9C-7
Oil Pressure Warning Light Symptom  Diagnosis ..........................................................9C-8
Brake and Parking Brake Warning Light  Symptom Diagnosis ..........................................9C-8
Seat Belt Reminder Light Symptom Diagnosis  (If Equipped)......................................................9C-8
A/T Shift Position Indicator Symptom  Diagnosis (A/T Model).......................................9C-9
Charge Warning Light Sy mptom Diagnosis ........9C-9
Main Beam (High Beam) Indicator Symptom  Diagnosis ..........................................................9C-9
Warning Buzzer Circuit Sy mptom Diagnosis ....9C-10
Cigarette Lighter Symptom Diagnosis (If  Equipped) ........................................................9C-10
Horn Symptom Diagnosis .................................9C-10
Information Display Symptom Diagnosis (If  Equipped) ........................................................9C-11
Clock Symptom Diagnosis (If Equipped)...........9C-12
Audio System Symptom Diagnosis (If  Equipped) ........................................................9C-12
Remote Audio Control Switch Symptom  Diagnosis (If Equipped) ...................................9C-13
Navigation Symptom Diagnosis (If Equipped)...9C-14
Repair Instructions ............ ................................9C-14
Ignition Switch Removal and Installation...........9C-14
Ignition Switch Inspection..................................9C-14
Combination Meter Removal and Installation ...9C-15
Fuel Level Sensor Removal and Installation .....9C-15
Fuel Level Sensor Inspection ............................9C-15
Oil Pressure Switch Remova l and Installation ..9C-15
Oil Pressure Switch Inspec tion .........................9C-16
Engine Coolant Temperature (ECT) Sensor  Inspection ........................................................9C-16
Brake Fluid Level Switch Inspection .................9C-16
Parking Brake Switch Inspec tion.......................9C-16  
Page 1174 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-3 Wiring Systems: 
Ignition switch Keyless entry Immobilizer system Combination meter Lighting switch
Headlight leveling Hazard warning light Front fog light Rear fog light Spark plug Radiator fan Fuel pumpFuel injectorXX control module Windshield wiper
Windshield washer Rear wiper Rear washer Rear defogger Power window
Power door lock Power mirror A/BPretensioner Passenger side
Driver side Seat heater A/CPower steering Side air-bag (R)
Side air-bag (L) Side curtain air-bag (R) Side curtain air bag (L) Glow plug
I2RH01910912-01I3JA01910902-01I5RH01910901-01I2RH01910915-01I2RH01910916-01
I3JA01910904-01I3JA01910905-01I3JA01910906-01I3JA01910907-01I2RH01910921-01
I2RH01910922-01I3JA01910908-01I5RW0A910987-01
XX
Cont M
I2RH01910925-01I3JA01910909-01
I3JA01910910-01I3JA01910911-01I3JA01910912-01I2RH01910930-01I3JA01910913-01
I3JA01910914-01I3JA01910915-01I3JA01910916-01I3JA01910917-01I3JA01910918-01
I3JA01910919-01I2RH01910938-01I3JA01910920-01I3JA01910921-01I4JA01910901-01
I4JA01910902-01I5RS0A910958-01I5RS0A910959-01
I5RW0A910986-01  
Page 1216 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-45 Wiring Systems: 
System Circuit Diagram
System Circuit DiagramS7RS0B910E001
Refer to “A-1 Cranking System Circuit Diagram”.
Refer to “A-2 Charging System Circuit Diagram”.
Refer to “A-3 Ignition System Circuit Diagram”.
Refer to “A-4 Cooling System Circuit Diagram”.
Refer to “A-5 Engine and A/C Control System Circuit Diagram”.
Refer to “A-6 A/T Control System Circuit Diagram”.
Refer to “A-7 Immobilizer  System Circuit Diagram”.
Refer to “A-8 Body Control System Circuit Diagram”.
Refer to “B-1 Windshield Wiper and Washer Circuit Diagram”.
Refer to “B-2 Rear Wiper and Washer Circuit Diagram”.
Refer to “B-3 Rear Defogger Circuit Diagram”.
Refer to “B-4 Power Window Circuit Diagram”.
Refer to “B-5 Power Door  Lock Circuit Diagram”.
Refer to “B-6 Power Mi rror Circuit Diagram”.
Refer to “B-7 Horn Circuit Diagram”.
Refer to “B-8 Seat Heater Circuit Diagram”.
Refer to “B-9 Keyless Star t System Circuit Diagram”.
Refer to “C-1 Combination Me ter Circuit Diagram (Meter)”.
Refer to “C-2 Combination Mete r Circuit Diagram (Indicator)”.
Refer to “C-3 Combination Meter Circuit Diagram (Warning Light)”.
Refer to “D-1 Headlight System Circuit Diagram”.
Refer to “D-2 Position, Tail and Licence Plate Light System Circuit Diagram”.
Refer to “D-3 Front Fog Light System Circuit Diagram”.
Refer to “D-4 Illumination  Light System Circuit Diagram”.
Refer to “D-5 Interior Li ght System Circuit Diagram”.
Refer to “D-6 Turn Signal and Hazard Warning Light System Circuit Diagram”.
Refer to “D-7 Brake Light System Circuit Diagram”.
Refer to “D-8 Back-Up Light System Circuit Diagram”.
Refer to “D-9 Headlight Beam Leveling System Circuit Diagram”.
Refer to “D-10 Rear Fog Light Circuit Diagram”.
Refer to “E-1 Heater System Circuit Diagram”.
Refer to “E-2 Auto A/C  System Circuit Diagram”.
Refer to “F-1 Air-Bag System Circuit Diagram”.
Refer to “F-2 Anti-Lock Brake System Circuit Diagram”.
Refer to “F-3 Electronic Stabilit y Program System Circuit Diagram”.
Refer to “F-4 Power Steeri ng System Circuit Diagram”.
Refer to “G-1 Audio Sy stem Circuit Diagram”.
Refer to “G-2 Multi Information Display /  Accessory Socket System Circuit Diagram”.  
Page 1246 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-75 Wiring Systems: 
C-3 Combination Meter Circuit Diagram (Warning Light)S7RS0B910E021
J/BMETER
10A25
G2831
3
E24 
C3615
G36 E3814
Stepper motor and
 LED output driver
Voltage regulator
Interface circuit
Micro controllerEPS
G336
RED/BLK
145293025
PNK/BLKGRY
GRY
RED/BLU
PNK/BLK
BLK/ORN
BLK/ORN
BLK/ORN
RED/BLU
P/S
Cont M
"F-3"
RBPBYBYR
YEL/BLKYEL/RED
A/B 
SDM
"F-1""A-5"
ABS
Cont.M
"F-2"
G
CAN
High            Low
WHTWHTRED
WHTRED
RED
RW
109 8
6L0114
RED/BLKBRN/YEL
L271
Parking
brake
switch
1
2
A
A
16
BLK/ORN
BLK/ORN
J/C
L24
Seat belt
switch
Oil
pressure switch
E24
C3614
BLU
BLU
1C18
D01
RED/BLK
E021
Brake
fluid
level
switch
and
fuel gauge
2
53
BLK
11 5E46G372
4
RW
W
21WHTRED
"A-5"
1
2
RBBBYRB
7
BCM
ECM"B-9"
KLS
ECM
7
R"B-9"
KLS
ECM
Without seat heater
AWith seat heater
BM13A engine, M15A engine
CM16A engine
D
C
C
C
D
(CAN)
(CAN) (CAN)
(CAN)
L26
L61AB
B
BA
A
J/C
G59
BLU
BLU
D
C18 
D022G35 E371419
D
I7RS0B910925-01  
Page 1254 of 1496
Downloaded from www.Manualslib.com manuals search engine 9A-83 Wiring Systems: 
D-6 Turn Signal and Hazard Warning Light System Circuit DiagramS7RS0B910E027
4 D
DG11G312
Switch
BLK/ORNBLK
WHT
Rear turn
signal light
6L43
BLK
11
2
HAZ LP-LLP-R
Flasher relayG34
RED/YEL
RED/YEL
Turn signal switch
G25
10A
METER
25
RED/BLUBLU/RED
J/B
L
N
R
TURN T
P  TB
TL TR  
J/C
1110
7G3414A
BCM
12
1
BLK
C
CG31
J/C
ON
OFF
3
A
B
A
AG15
J/C
BLU/YEL
(R)
1
1314
BLK
191L0510
IG
7
6
SW-L SW-R
4
BLK
BLK/ORNBLK/ORN
GRN/RED
(L)
L20
5
6
5
1
2
15
RY
9
GRN
3
BLK
B
RY
"D-4"BRRB
BLK
9
A
J/B side connector (BCM)
RHD
LHD
ABC
BC11 
5
BC12 
6
BC13 
7
RHD
I5RS0C910947-02  
Page 1283 of 1496
Downloaded from www.Manualslib.com manuals search engine Lighting Systems:  9B-1
Body, Cab and Accessories
Lighting Systems
Component Location
Lighting System Components LocationS7RS0B9203001
NOTE
Below figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are 
installed at the opposite side.
 
2
1
3
4
6
14
5
7
11
9
15
[A]
1515*
10*
8* 12
13
16*
17
I6RS0C920002-01
1. Headlight bulb 7. Headlight unit 13. Turn signal / hazard warning relay
2. Socket cover 8. Lighting switch 14. Rear combination light
3. Clearance light bulb 9. Front fog light (if equipped)15. BCM (included in junction block assembly)
: BCM cannot be removed from junction block.
4. Clearance light bulb socket 10. Front fog light switch (if equipped) 16. Headlight leveling switch (if equipped)
5. Turn signal light bulb 11. Front fog light relay (if equipped) 17. Back-up light
6. Turn signal light bulb socket 12. Hazard warning switch [A]: Junction block assembly viewed from relay side  
Page 1285 of 1496
Downloaded from www.Manualslib.com manuals search engine Lighting Systems:  9B-3
Turn Signal and Hazard Warning Light Symptom DiagnosisS7RS0B9204003
Clearance, Tail and License Plate Light Symptom DiagnosisS7RS0B9204004
ConditionPossible 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.
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” under 
“Scan Tool Data in 
Section 10B”.
• 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”.
ConditionPossible 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.
Some lights do not light 
up Bulb(s) blown
Replace bulb(s).
Wiring or grounding faulty Repair circuit.