BCM fuse SUZUKI SWIFT 2006 2.G Service Owner's Manual

Downloaded from www.Manualslib.com manuals search engine 6C-12 Power Assisted Steering System:
Scan Tool Data Definitions
Battery Voltage
This parameter indicates battery positive voltage.
TQS Power Supply (Torque Sensor Power Supply, V)
This parameter indicates the power supply voltage which
the P/S control module supplies to the torque sensor.
TQS Main Torque (Torque Sensor Main Torque, N ⋅m)
The torque sensor is installed to detect the steering force
and the steering directio n. It consists of two
potentiometers and the main torque sensor is one of
these.
TQS Sub Torque (Torque Sensor Sub Torque, N ⋅m)
The torque sensor is installed to detect the steering force
and the steering directio n. It consists of two
potentiometers and the sub-torque sensor is one of
these. Its output characteristics are compared with those
of the main torque sensor.
Assist Torque (N ⋅m)
This parameter is an internal parameter of the P/S
control module. It is obtained by computing the torque
sensor input signal. Motor Control (Motor Control Current, A)
Based on the input signal, the P/S control module
determines the assist amount
and controls the current to
the motor suitable for that a ssist amount. This parameter
indicates that control value.
Motor Monitor (Motor Monitor Current, A)
This parameter indicates the actually measured value of
the current flowing to the motor. The motor circuit
condition is diagnosed by co mparing this parameter with
“Motor Control” parameter described previously.
Vehicle Speed (km/h, MPH)
Vehicle speed signal is fed from BCM. P/S control
module determines the amount of power assist based on
this vehicle speed signal and the torque sensor signal.
Engine Speed (rpm)
Engine speed signal is fed from the ECM so that it can
be used for trouble diagnos is of the electric power
steering system.
Motor Volt (V)
This parameter indicates the voltage between motor
terminals.
Ignition switch (ON, OFF)
This parameter indicates the condition of the power
supply through the ignition switch.
Visual InspectionS7RS0B6304007
Visually check the following pats and system.
P/S System Symptom DiagnosisS7RS0B6304008
This section describes trouble diagnosis of the P/S system parts whose trouble is not indicated by the on-board
diagnostic system (self-diagnostic functi on). When no malfunction is indicated by the on-board diagnostic system
(self-diagnosis function) and those stee ring basic parts as described in “Steering Symptom Diagnosis in Section 6A”
are all in good condition, check the following power steer ing system parts which may be a possible cause for each
symptom of the steering. Inspection Item Referring section
Battery Level, leakage, color “Batte ry Description in Section 1J”
Connectors of electric wire
harness Disconnection friction “Intermittent and Poor
Connection Inspection in Section 00”
Fuses Burning “Cautions in Body Electric al System Servicing in Section 9A”
Parts Installation, damage
Other parts that can be checked visually
Condition Possible cause Correction / Reference Item
Steering wheel feels
heavy (Perform “Steering
Force Check” before
diagnosis.) Steering wheel installed improperly
(twisted)
Install steering wheel correctly.
Poor performance of torque sensor Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Poor performance of P/S motor Check motor referring to “P/S Motor and Its
Circuit Inspection”.
Steering gear case assembly faulty Replace.
Poor performance of vehicle speed
signal from ECM Check vehicle speed signal circuit referring to
“DTC C1121 / C1123 / C1124: VSS Circuit
Failure”.

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Serial Data Link Circuit CheckS7RS0B6304009
CAUTION!
Be sure to perform “EPS System Check” before starting “Troubleshooting”.

Wiring DiagramVehicle pulls to one side
during straight driving
Poor performance of torque sensor
Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering gear case assembly faulty Replace.
Poor recovery after turns Poor performance of torque sensor Check torque sensor referring to “Torque
Sensor and Its Circuit Inspection”.
Steering column faulty Replace.
Abnormal noise P/S motor (built in steering gear case
assembly) malfunction Replace steering gear case assembly.
No idle up P/S control module faulty Check P/S control module referring to
“Inspection of P/S Control Module and Its
Circuits”.
Condition Possible cause Correction / Reference Item
MBLK
RED
E52-11 E51-1
E51-2PPL/WHT
[A ]
12
3
4 5 67
89
11
10
12 13
141516
17 18 19 2010 9 8 7654 3 21
16 15 14 13 12 11
26 25 24 2322 21 20 19 18 17
32 31 30 29 28 27
[C]
8
79
12V
[B ]
11
12
GRY
LT GRN
/BLK
E52-1
E52-5
E49-1
GRNGRNWHTBLK
WHY
G28-25G28-31
RED/BLK
10
3
4
4
5 6
4
4
1 2
4
E49-2BLK
I7RS0B630003-01
[A]: Connector “E52” (viewed from harness side) 3. Junction block assembly 8. P/S control module
[B]: Connector “E49” (viewed from harness side) 4. Fuse 9. T o ECM, BCM, Air bag SDM control module and ABS control
module assembly
[C]: Connector “G28” (viewed from harness side) 5. Comb ination meter 10. Individual circuit fuse box No.1
1. Main fuse box 6. “EPS” warning light 11. Serial data circuit
2. Ignition switch 7. Date link connector (DLC)

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Schematic and Routing Diagram
Heater and Ventilation Wiring Circuit DiagramS7RS0B7102001
2. Ventilator duct 6. Foot air 10. Recirculation air 14. Resistance board
3. Defroster nozzle 7. Front defroster air 11. Center ventilation air 15. Rear duct (if equipped)
4. Heater core 8. Side defroster air 12. Air intake door
BLK
RED/BLK
3
5
7
BLK
2
M
12V
BLU/WHTE23-19
G18-3
G18-4
G18-7
G18-8
G18-10
G18-13
G19-2
G19-3
G19-7
G19-6
G19-1
G18-9
G18-14
BLK/WHT
YEL
BLU/WHT
RED
RED/BLK
RED
GRN
BRN
BLK/RED
RED/YEL
BLK
BLK/YEL
BLK/ORN
4
6
10
8
9
M1
12
11 13
14
15
I4RS0B710002-01
1. Ignition switch 5. Blower motor relay 9. ECM 13. Blower speed selector
2. Blower motor 6. Blower motor resistor 10. Air intake control actuator 14. Air intake selector
3. HVAC control unit 7. Junction block assembly 11. Ind ividual circuit fuse box No.1 15. Rear defogger switch
4. Lighting switch 8. BCM 12. Main fuse box

Downloaded from www.Manualslib.com manuals search engine 7B-6 Air Conditioning System: Manual Type
A/C System Wiring DiagramS7RS0B7212002
BLK/REDBLK/RED
BLK/YELBLK/YEL
BLK/YEL
BRN/WHT
12V5V
5V 5V
5V11
E23-1
E23-60
BLK/REDBLK/REDE23-16
E23-57WHT/BLK
9
13
E23-55C37-14GRY/REDRED
BLK
ORN
E23-47 GRY
WHTBLU/YEL
RED/BLK
14 3
1
15
5
7
BLK
2
M
12VBLU/WHTE23-19
C37-24
C37-55ORN
5V
LT GRN16
G18-3
G18-4
G18-7
G18-8
G18-10
G18-13
G18-5
G18-6
G19-5
G19-2
G19-3
G19-7
G19-6
G19-1
G18-9
G18-14
BLK/WHT
YEL
BLU/WHT
RED
BRN/WHT
GRN/WHT
RED/BLK
RED
GRN
BRN
BLK/RED
RED/YEL
BLK
BLK/YEL
BLK/ORN
4
6
12
10
M
E23-54
REDWHTE23-3E23-18
17 18
LT GRNE23-46
L+
L–
H–
H
+
BLU/RED
BLK
BLU/WHTBLK
BLU/BLK
20
GRN
GRY
E23-48
19
21
22
BLU/REDC37-58
C37-15 C37-30
BLK/ORN
BLKBLKE23-31 BLK
BLU
YEL
GRN
WHT
23
24
26 25
28
27
8
29
I7RS0B721001-01
1. Ignition switch
9. A/C refrigerant pressure sensor 17. I ndividual circuit fuse box (No.1) 25. Air intake selector
2. Blower motor 10. ECM 18. Main fuse box 26. Rear defogger switch
3. HVAC control unit 11. Main relay 19. Radiator cooling fan relay No.1 27. Rear defogger
4. Lighting switch 12. Air intake control actuator 20. Radiator cooling fan relay No.2 28. Rear defogger relay
5. Blower motor relay 13. Compressor relay 21. Radiator cooling fan relay No.3 29. ABS / ESP ® control module
6. Blower motor resistor 14. Compressor 22. Radiator cooling fan motor
7. Junction block assembly 15. Evaporator thermistor (evaporator temperature sensor)23. Blower speed selector
8. BCM 16. ECT sensor 24. A/C switch

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Diagnostic Information and Procedures
A/C System Symptom DiagnosisS7RS0B7214001
ConditionPossible cause Correction / Reference Item
No cool air comes out (A/
C system does not
operate) No refrigerant
Perform recovery, evacuation and charge
referring to “Operation Procedure for
Refrigerant Charge”.
Fuse blown Check related fuses, and then check for short
circuit to ground.
A/C switch faulty Check A/C switch referring to “A/C Switch
Inspection”.
Blower speed selector faulty Check blower speed selector referring to
“Blower Speed Selector Inspection in Section
7A”.
Evaporator thermistor (Evaporator
temperature sensor) faulty Check evaporator thermistor (evaporator
temperature sensor) referring to “Evaporator
Thermistor (Evaporator Temperature Sensor)
Inspection”.
A/C refrigerant pressure sensor faulty Check A/C refrigerant pressure sensor
referring to “A/C Refrigerant Pressure Sensor
and Its Circuit Inspection”.
Wiring or grounding faulty Repair as necessary.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
Magnet clutch faulty Check magnet clutch referring to “Magnet
Clutch Inspection”.
Compressor drive belt loosened or
broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Compressor relay faulty Check compressor relay referring to
“Compressor Relay Inspection”.
BCM faulty Check BCM referring to “Inspection of BCM
and its Circuits in Section 10B”.
No cool air comes out
(radiator cooling fan
motor does not operate) Fuse blown
Check related fuses, and then check for short
circuit to ground.
Wiring or grounding faulty Repair as necessary.
Radiator cooling fan motor relay faulty Check radiator cooling fan motor relay
referring to “Radiator Cooling Fan Relay
Inspection in Section 1F”.
Radiator cooling fan motor faulty Check radiator cooling fan motor referring to
“Radiator Cooling Fan Removal and
Installation in Section 1F”.
ECM and/or its circuit faulty Check ECM and/or its circuit referring to “A/C
System Inspection at ECM”.
No cool air comes out
(blower motor does not
operate) Fuse blown
Check related fuses, and then check for short
circuit to ground.
Blower motor relay faulty Check blower motor relay referring to “Blower
Motor Relay Inspection in Section 7A”.
Blower motor resistor faulty Check blower motor resistor referring to
“Blower Motor Resistor Inspection in Section
7A”.
Blower speed selector faulty Check blower speed selector referring to
“Blower Speed Selector Inspection in Section
7A”.
Wiring or grounding faulty Repair as necessary.
Blower motor faulty Check blower motor referring to “Blower Motor
Inspection in Section 7A”.

Downloaded from www.Manualslib.com manuals search engine 7B-38 Air Conditioning System: Automatic Type
A/C System Wiring DiagramS7RS0B7222002
6
13
15
1610
11
12 9
12V
5V
5V5V
12V
12V
5V 5V
5V +BB
PNK/BLK
WHT/BLK
GRYBLK
WHT/BLU
WHT YEL
ORN
BRN/WHT
BRN/YEL
GRY/BLU
GRY/RED
PNK
YEL/BLK
BLK/ORN
PPL/WHT
12V BLK/YEL
WHT
ORN
ORN
ORN
5V
BLK/RED
BRN
RED/BLK
5V
5VGRY/REDRED
ORN
BLU/WHT
14
YEL/REDYEL/BLK
GRN/WHT
12V
YEL
L+
H+
L
H
WHTGRYBLK/RED
REDWHTREDWHT
M
M
WHT/RED
5
BLU
YEL
WHT
WHT/BLU
RED/BLKWHT
RED/YEL
BLU/YEL
LT GRN
GRN
BLU/RED
G52-6
G52-4
G52-2
G52-5
G51-1
G51-2
G52-14
G51-3
G51-4
G52-1
G52-13
G52-3
G51-19
G51-7
G51-18
G51-10
G51-20
G51-5
G52-11
G51-9
G51-8
G51-12
G51-11
G52-16
5V
12V
5V
12V
LT GRNORN
5V
23
1
2
3 4
8
17
18 19
20
21
22
24
25
26
27
28
29
30
36 35 34 33 32 31 37
38 3938
41 40
42
43
44
MRED/BLK
GRN/RED
G52-8G51-15
G51-17G51-16
REDGRN
BLK/YEL
BLK/WHT
M7
I7RS0A722001-01
1. Main fuse box 12. Temperature control actuator 23. HVAC control module 34. Defroster switch
2. Ignition switch 13. Inside air temperature sensor 24. BCM 35. AUTO switch
3. Individual circuit fuse box No.1 box 14. Outside air temper ature sensor 25. A/C refrigerant pressure sensor 36. OFF switch

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-39
Diagnostic Information and Procedures
A/C System Symptom DiagnosisS7RS0B7224001
4. Rear defogger relay 15. Evaporator temperature sensor 26. Radiator cooling fan relay No.1 37. Rear defogger switch
5. Rear defogger 16. Sunload sensor 27. Radiator cooling fan relay No.2 38. To BCM
6. Blower motor relay 17. Junction block assembly 28. Radiator cooling fan relay No.3 39. To ECM
7. Blower motor 18. ECM 29. Information display 40. To main relay
8. Blower motor controller 19. ECT sensor 30. Lighting switch 41. To main fuse
9. DLC 20. Radiator cooling fan motor 31. A/C switch 42. Back-light
10. Air intake actuator 21. Compressor relay 32. MODE (air flow) selector 43. Defroster indicator 11. Air flow control actuator 22. Compressor 33. Air intake selector 44. Rear defogger indicator
Condition Possible cause Correction / Reference Item
No cool air comes out (A/
C system does not
operate) No refrigerant
Perform recovery, evacuation and charge
referring to “Operation Procedure for
Refrigerant Charge”.
Fuse blown Check related fuses, and then check for short
circuit to ground.
A/C switch faulty Check A/C switch referring to “Inspection of
HVAC Control Module and Its Circuit”.
Evaporator temperature sensor faulty Check evaporator temperature sensor
referring to “Evaporator Thermistor
(Evaporator Temperature Sensor) Inspection”.
A/C refrigerant pressure sensor faulty Check A/C refrigerant pressure sensor
referring to “A/C Refrigerant Pressure Sensor
and Its Circuit Inspection”.
Wiring or grounding faulty Repair as necessary.
ECT sensor faulty Check ECT sensor referring to “ECT Sensor
Inspection in Section 1C”.
ECM faulty Check ECM referring to “A/C System
Inspection at ECM”.
HVAC control module faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
Magnet clutch faulty Check magnet clutch. Referring to “Magnet
Clutch Inspection”.
Compressor drive belt loosened or
broken Adjust or replace drive belt.
Compressor faulty Check compressor.
Compressor relay faulty Check compressor relay referring to
“Compressor Relay Inspection”.
Temperature selector, blower speed
selector, and/or air flow selector faulty Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit”.
BCM faulty Check BCM referring to “Inspection of BCM
and its Circuits in Section 10B”.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-7
Schematic and Routing Diagram
Air Bag System Wiring Circuit DiagramS7RS0B8202001
[A]
[B]“E13” “E44”, “G04” “G35” and "L03" \
"L41"
1
2 GRN/RED
GRN GRN/RED
GRN
BLU/RED YEL/RED BLU/RED
YEL/RED
GRN/ORN GRN/YEL
RED
13
PPL/WHT
9 7
8
5
6
10 “L10”
“L11”
“L04”
“G35” “G34”
“G33”
“G28”
“G32”
“L35”
L29-2
L29-27
L29-32 L29-5
L29-6 L29-4
L29-3
L29-8
L29-7
IG
ST
YEL L29-37ADS
WHT/RED
LT GRN/BLK L29-46
L29-47 SD+
SD-
11
WHT/GRN LT GRN
BLK L29-45
L29-44 WL
L29-28
E1 DP-
DP+ P- P+ D- D+
“G10”
“G04”“L29”
18
BLU/ORN
BLU/YEL “L36”
L29-9
L29-10
PP-
PP+
19 17
GRY/RED
GRY
L29-12
L29-11
DS- DS+ “L25”
20
BRN/WHT
BRN
L29-13
L29-14
PS- PS+ “L30”
21
YEL/GRN
YEL/BLU
L29-20
L29-19
DC- DC+ “L18”
22
BLK/YEL
BRN/YEL
L29-21
L29-22
PC- PC+ “L41”
2316
15
14
“L29”
SP+
SP-
“G26”“L32”
“L03”“E44”“E13”
12
ORN
PNK/BLK
GRY/RED
GRY L29-50
L29-51 FD+
FD-
3 4
YEL/BLK
YEL/BLK
GRN RED/BLK
I7RS0A820002-03
[A]: Shorting bar
8. BCM 17. Passenger air bag (inflator) module
[B]: Connector 9. To data link connector (DLC)18. Driver seat belt pretensioner
1. To battery 10. Driver side-sensor (if equipped)19. Passenger seat belt pretensioner
2. Ignition switch 11. Passenger side-sensor (if equipped) 20. Driver side-air bag (inflator) module (if equipped)
3. “AIR BAG” warning light 12. Forward-sensor 21. Passenger side-air bag (inflator) module (if equipped)
4. Light driver 13. Ground for air bag system 22. Driver side curtain-air bag (inflator) module (if equipped)
5. “METER” fuse 14. SDM 23. Passenger side curtain-air bag (inflator) module (if equipped)
6. “A/BAG” fuse 15. Contact coil
7. Junction block assembly 16. Driver air bag (inflator) module

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.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-13
Scan Tool DataS7RS0B8204006
Data list of SDM
Definition
Back Up Volt (V)
This parameter indicates the capacity of the backup
condenser installed to maintain the ignition current (as
much as possible) even when the power supply to SDM
that ignites the inflator is shut off.
Battery Voltage (V)
Battery voltage is an analog input signal read by SDM.
System ID (4ch/8ch)
This parameter indicates the number of initiator circuits.
Driv A/B Ini Res (Driver air bag initiator resistance)
(ohm)
This parameter indicates the resistance of the driver air
bag initiator circuit. Pass A/B Ini Res (Passenger air bag initiator
resistance) (ohm)
This parameter indicates the
resistance of the passenger
air bag initiator circuit.
Driv Preten Ini Res (Dri ver pretensioner initiator
resistance) (ohm)
This parameter indicates the resistance of the driver seat
belt pretensioner initiator circuit.
Pass Preten Ini Res (Passenger pretensioner
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
seat belt pretensioner initiator circuit.
Driv Sidebag Ini Res (Driver side-air bag initiator
resistance) (ohm)
This parameter indicates the resistance of the driver
side-air bag initiator circuit.
Pass Sidebag Ini Res (Passenger side-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the
Passenger side-air bag initiator circuit.
Driv curtain Ini Res (Driver side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the re sistance of the driver side
curtain-air bag initiator circuit.
Pass curtain Ini Res (Passenger side curtain-air bag
initiator resistance) (ohm)
This parameter indicates the resistance of the passenger
side curtain-air bag initiator circuit.
“AIR BAG” Warning Right Comes ON SteadyS7RS0B8204007
Wiring Diagram Normal Condition /
Reference Value
) Battery voltage 10 – 14 V
) Back up volt 27.0 – 33.0 V
) System ID 4ch or 8ch
) Driv A/B Ini Res 2.1 – 3.8 ohm
) Pass A/B Ini Res 1.8 – 2.8 ohm
) Driv Preten Ini Res 1.8 – 2.9 ohm
) Pass Preten Ini Res 1.8 – 2.9 ohm
) Driv Sidebag Ini Res 1.8 – 2.6 ohm
) Pass Sidebag Ini Res 1.8 – 2.6 ohm
) Driv curtain Ini Res 1.8 – 2.8 ohm
) Pass curtain Ini Res 1.8 – 2.8 ohm
1
2 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