wiring SUZUKI SX4 2006 1.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-27
DTC Troubleshooting
DTC C1153: P/S Control Module Power Supply CircuitS6RW0D6304017
Wiring Diagram
DTC Detecting Condition and Trouble AreaStep Action Yes No
1Was “EPS System Check” performed?Go to Step 2. Go to “EPS System
Check”.
2DTC check
Is DTC C1153 and/or C1155 indicated, together?Go to applicable DTC
diag. flow.Go to Step 3.
3Power supply and ground circuit check
1) Check P/S control module power supply and ground
circuit referring to “P/S Control Module Power Supply
and Ground Circuit Check”.
Is it in good condition?Go to Step 4. Repair or replace
defective circuit.
4Motor circuit check
1) With ignition switch turned OFF, disconnect P/S control
module connector No.3 and P/S motor connector.
2) Check P/S control module connector and P/S motor
connector for proper connection.
3) If OK, check for open, short and/or high resistance in
motor circuit between P/S control module and P/S motor.
Refer to “Electrical Circuit Inspection Procedure in
Section 00”.
Are they in good condition?Go to Step 5. Repair motor circuit.
5P/S motor check
1) Check P/S motor referring to “P/S Motor and Its Circuit
Inspection”.
Is P/S motor in good condition?Substitute a known-
good P/S control
module and recheck.Replace the steering
gear case assembly and
recheck.
[A]
123
4567
8
9 11
10 12 13
141516
17 18 1920
1
2
[B]
LT GRN/
BLKE11-1E13-1 GRNGRN
WHT
5
3 6
8
9
7
4 12
12V
E13-2BLK
I6RW0C630009-01
[A]: P/S control module connector No.1 “E11” (viewed from harness side) 3. Junction block assembly 7. “IGN” fuse
[B]: P/S control module connector No.2 “E13” (viewed from harness side) 4. Main fuse 8. “P/S” fuse
1. Main fuse box 5. P/S control module 9. “IG1 SIG” fuse
2. Ignition switch 6. Individual circuit fuse box No.1
DTC detecting condition Trouble area
Power supply voltage of P/S control module is less than 9
V for 5 seconds continuously while engine speed is more
than 600 rpm.
(1 driving cycle detection logic)• P/S control module power supply circuit
• Battery
• Generator
• P/S control module

Downloaded from www.Manualslib.com manuals search engine 6C-28 Power Assisted Steering System:
DTC Troubleshooting
DTC C1155: P/S Control Module Internal FailureS6RW0D6304018
Wiring Diagram
Refer to “DTC C1153: P/S Control Module Power Supply Circuit”.
DTC Detecting Condition and Trouble Area
DTC TroubleshootingStep Action Yes No
1Was “EPS System Check” performed?Go to Step 2. Go to “EPS System
Check”.
2Battery voltage check
1) Check circuit fuse for P/S control module.
2) If OK, measure voltage between positive (+) battery
terminal and vehicle body ground with engine running.
Is voltage 10 V or more?Go to Step 3. Check charging system
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.
3P/S control module power supply circuit check
Check power supply circuit and ground circuit for P/S control
module referring to “P/S Control Module Power Supply and
Ground Circuit Check”.
Is check result in good condition?Substitute a known-
good P/S control
module and recheck.Repair defective circuit.
DTC detecting condition Trouble area
Internal memory (EEPROM) is data error.
(In this case, “EPS” warning light does not light up)
or
Internal circuit is faulty.
or
Power supply voltage of P/S control module exceeded
17.5 V
(1 driving cycle detection logic)• Generator
• P/S control module
Step Action Yes No
1Was “EPS System Check” performed?Go to Step 2. Go to “EPS System
Check”.
2P/S control module power supply and ground circuit
check
Check power supply circuit and ground circuit for P/S control
module referring to “P/S Control Module Power Supply and
Ground Circuit Check”.
Is check result in good condition?Go to Step 3. Repair or replace
defective circuit.
3Battery voltage check
1) Check voltage between positive (+) battery terminal and
vehicle body ground with engine speed at 3000 rpm.
Is voltage 15.5 V or less?Replace P/S control
module.Check charging system
referring to “Generator
Test (Overcharged
Battery Check) in
Section 1J”.

Downloaded from www.Manualslib.com manuals search engine Power Assisted Steering System: 6C-29
P/S Control Module Power Supply and Ground Circuit CheckS6RW0D6304019
Wiring Diagram
Refer to “DTC C1153: P/S Control Module Power Supply Circuit”.
DTC Troubleshooting
Step Action Yes No
1Circuit fuse check
1) Disconnect P/S control module connector with ignition
switch turned OFF.
2) Check for proper connection to P/S control module
connector at “E13-1”, “E13-2” and “E11-1” terminals.
3) If OK, check “P/S” fuse and “IG1 SIG” fuse for blowing.
Are “P/S” fuse and “IG1 SIG” fuse in good condition?Go to Step 2. Replace fuse (s) and
check for short in
circuits connected to
fuse(s).
2Power supply circuit check
1) Measure voltage between “E13-1” terminal of P/S
control module connector and body ground.
Is voltage 10 – 14 V?Go to Step 3. “GRN” or “WHT” wire is
open circuit.
3Ignition signal check
1) Turn ignition switch to ON position.
2) Measure voltage between “E11-1” terminal of P/S control
module connector and body ground.
Is voltage 10 – 14 V?Go to Step 4. “LT GRN / BLK” or
“GRN” wire is open
circuit.
4P/S control module ground circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors from P/S control module.
3) Measure resistance between “E13-2” terminals of P/S
control module connector and body ground.
Is resistance 1
Ω or less?Go to Step 5. “BLK” wire is open or
high resistance circuit.
5P/S control module ground circuit check
1) Connect connectors to P/S control module.
2) Start engine.
3) Measure voltage between “E13-2” terminals of P/S
control module connector and body ground when
steering wheel fully turned to left or right.
Is voltage 0.3 V or less?P/S Control Module
Power Supply and
Ground Circuit is in
good condition.“BLK” wire is high
resistance circuit.

Downloaded from www.Manualslib.com manuals search engine 6C-30 Power Assisted Steering System:
Inspection of P/S Control Module and Its CircuitsS6RW0D6304020
The P/S control module and its circuits can be checked at the P/S control module wiring couplers by measuring
voltage and resistance.
CAUTION!
P/S control module cannot be checked by itself. It is strictly prohibited to connect voltmeter or
ohmmeter to the P/S control module with connectors disconnected from the P/S control module.

Voltage Check
1) Remove console box.
2) Check for voltage at each terminal with connectors connected to the P/S control module.
NOTE
As each terminal voltage is affected by the battery voltage, confirm if the battery voltage is 11 V or
more when ignition switch is ON.

[C]
[A]
123
4567
8
9 11
10 12 13
141516
17 18 1920
1
2
[B]
1
2
I7RW01632020-01
[A]: P/S control module connector No.1 “E11” (viewed from harness side)
[B]: P/S control module connector No.2 “E13” (viewed from harness side)
[C]: P/S control module connector No.3 “E12” (viewed from harness side)

Downloaded from www.Manualslib.com manuals search engine Table of Contents 7- i
7
Section 7
CONTENTS
HVAC
Precautions ................................................. 7-1
Precautions............................................................. 7-1
Precautions on HVAC ........................................... 7-1
Heater and Ventilation............................. 7A-1
General Description ............................................. 7A-1
Heater and Ventilation Construction ................... 7A-1
Schematic and Routing Diagram ........................ 7A-2
Heater and Ventilation Wiring Circuit Diagram .... 7A-2
Component Location ........................................... 7A-2
Electronic Control System Components
Location ............................................................ 7A-2
Diagnostic Information and Procedures ............ 7A-3
Heater and Ventilation Symptom Diagnosis........ 7A-3
Repair Instructions .............................................. 7A-4
HVAC Unit Components ..................................... 7A-4
HVAC Unit Removal and Installation (Non-A/
C) ...................................................................... 7A-4
Blower Motor Removal and Installation............... 7A-4
Blower Motor Inspection ..................................... 7A-4
Blower Motor Resistor Removal and
Installation ......................................................... 7A-5
Blower Motor Resistor Inspection ....................... 7A-5
Blower Motor Relay Inspection ........................... 7A-6
HVAC Control Unit Components ......................... 7A-6
HVAC Control Unit Removal and Installation ...... 7A-7
Blower Speed Selector Inspection ...................... 7A-9
Air Intake Selector Inspection ............................. 7A-9
Air Intake Control Actuator Removal and
Installation ......................................................... 7A-9
Air Intake Control Actuator Inspection .............. 7A-10
Center Ventilation Louver Removal and
Installation ....................................................... 7A-11
Side Ventilation Louver Removal and
Installation ....................................................... 7A-11
Rear Duct Removal and Installation (If
Equipped)........................................................ 7A-12
HVAC Air Filter Removal and Installation (If
Equipped)........................................................ 7A-12
HVAC Air Filter Inspection (If Equipped) ........... 7A-12
Air Conditioning System......................... 7B-1
Manual Type ............................................................ 7B-1
Precautions........................................................... 7B-1A/C System Caution ............................................ 7B-1
Precautions on Servicing A/C System ................ 7B-1
General Description .............................................7B-2
Sub-Cool A/C System Description ...................... 7B-2
Manual A/C Electronic Input Output Table .......... 7B-3
A/C Operation Description at ECM ..................... 7B-3
Schematic and Routing Diagram ........................7B-4
A/C System Air Flow Diagram............................. 7B-4
A/C System Wiring Diagram ............................... 7B-5
Component Location ...........................................7B-6
A/C System Major Components Location ........... 7B-6
Electronic Control System Components
Location............................................................. 7B-7
Diagnostic Information and Procedures ............7B-8
A/C System Performance Inspection .................. 7B-8
Trouble Diagnosis for Abnormal Pressure ........ 7B-11
A/C System Inspection at ECM ......................... 7B-12
A/C System Symptom Diagnosis ...................... 7B-13
Abnormal Noise Symptom Diagnosis of A/C
System ............................................................ 7B-15
Repair Instructions ............................................7B-17
Operation Procedure for Refrigerant Charge .... 7B-17
Condenser Cooling Fan Removal and
Installation ....................................................... 7B-22
Condenser Cooling Fan Inspection ................... 7B-23
Condenser Assembly On-Vehicle Inspection .... 7B-23
Condenser Assembly Removal and
Installation ....................................................... 7B-23
Desiccant Removal and Installation .................. 7B-24
HVAC Unit Components ................................... 7B-25
HVAC Unit Removal and Installation ................ 7B-26
Evaporator Inspection ....................................... 7B-27
Evaporator Temperature Sensor Removal
and Installation ................................................ 7B-27
Evaporator Temperature Sensor Inspection ..... 7B-28
Expansion Valve Removal and Installation ....... 7B-28
Expansion Valve Inspection .............................. 7B-28
A/C Refrigerant Pressure Sensor and Its
Circuit Inspection............................................. 7B-29
A/C Refrigerant Pressure Sensor Removal
and Installation ................................................ 7B-29
A/C Switch Inspection ....................................... 7B-29
A/C System Relay Inspection............................ 7B-30
Compressor Drive Belt Inspection and
Adjustment ...................................................... 7B-30

Downloaded from www.Manualslib.com manuals search engine 7-ii Table of Contents
Compressor Drive Belt Removal and
Installation ....................................................... 7B-31
Compressor Assembly Removal and
Installation ....................................................... 7B-31
Compressor Assembly Components................. 7B-32
Magnet Clutch Inspection.................................. 7B-32
Magnet Clutch Removal and Installation........... 7B-33
Thermal Switch Inspection ................................ 7B-35
Thermal Switch Removal and Installation ......... 7B-35
Relief Valve Inspection...................................... 7B-36
Relief valve Removal and Installation ............... 7B-36
Specifications .....................................................7B-37
Tightening Torque Specifications ...................... 7B-37
Special Tools and Equipment ...........................7B-37
Recommended Service Material ....................... 7B-37
Special Tool ...................................................... 7B-37
Automatic Type .....................................................7B-38
Precautions.........................................................7B-38
A/C System Caution .......................................... 7B-38
Precautions in Diagnosing Trouble ................... 7B-38
Precautions on Servicing A/C System .............. 7B-38
General Description ...........................................7B-39
Auto A/C System Description ............................ 7B-39
HVAC Control Description................................. 7B-40
Sub-Cool A/C System Description .................... 7B-40
On-Board Diagnostic System Description ......... 7B-41
Schematic and Routing Diagram ......................7B-41
A/C System Air Flow Diagram........................... 7B-41
A/C System Wiring Diagram ............................. 7B-42
Component Location .........................................7B-43
A/C System Major Components Location ......... 7B-43
Electronic Control System Components
Location .......................................................... 7B-44
Diagnostic Information and Procedures ..........7B-45
Air Conditioning System Check......................... 7B-45
A/C System Symptom Diagnosis ...................... 7B-47
Abnormal Noise Symptom Diagnosis of A/C
System ............................................................ 7B-49
DTC Check........................................................ 7B-49
DTC Clearance ................................................. 7B-51
DTC Table ......................................................... 7B-52
Fail-Safe Table .................................................. 7B-54
Scan Tool Data ................................................. 7B-55
Visual Inspection ............................................... 7B-57
DTC B1502: Inside Air Temperature Sensor
Circuit Malfunction .......................................... 7B-57
DTC B1503: Evaporator Temperature Sensor
Circuit Malfunction .......................................... 7B-59
DTC B1504: Sunload Sensor Circuit
Malfunction ...................................................... 7B-60
DTC B1511: Temperature Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction ...................................................... 7B-61
DTC B1512: Air flow Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction ...................................................... 7B-63
DTC B1513: Temperature Control Actuator
(Motor) and/or Its Circuit Malfunction .............. 7B-65DTC B1514: Air Flow Control Actuator (Motor)
and/or Its Circuit Malfunction........................... 7B-67
DTC B1520 / B1521 / B1522: Temperature /
Blower Speed / Air Flow Selector
Malfunction ...................................................... 7B-68
DTC B1541: Back-Up Power Supply Circuit
Malfunction ...................................................... 7B-69
DTC B1546: A/C Refrigerant Pressure
Malfunction ...................................................... 7B-70
DTC B1551: Serial Communication Circuit
Malfunction ...................................................... 7B-70
DTC B1552: HVAC Control Module Check
Sum Error ........................................................ 7B-72
DTC B1553: CAN Communication Circuit
Malfunction ...................................................... 7B-72
DTC B1557: VSS Signal Failure ....................... 7B-73
DTC B1561: ECT Signal Failure ....................... 7B-73
DTC B1562: Outside Air Temperature Signal
Failure ............................................................. 7B-74
DTC B1563: A/C Refrigerant Pressure Signal
Failure ............................................................. 7B-74
DTC B1570: Engine Type Signal Failure .......... 7B-75
DTC B1571: Combination Meter Spec Signal
Failure ............................................................. 7B-75
Inspection of HVAC Control Module and Its
Circuit .............................................................. 7B-76
A/C System Inspection at ECM ......................... 7B-79
Repair Instructions ............................................7B-79
Operation Procedure for Refrigerant Charge .... 7B-79
HVAC Unit Components ................................... 7B-80
HVAC Unit Removal and Installation ................ 7B-81
Temperature Control Actuator Removal and
Installation ....................................................... 7B-81
Temperature Control Actuator and Its Circuit
Inspection ........................................................ 7B-81
Air Flow Control Actuator Removal and
Installation ....................................................... 7B-83
Air Flow Control Actuator and Its Circuit
Inspection ........................................................ 7B-83
Air Intake Actuator Removal and Installation .... 7B-84
Air Intake Actuator Inspection ........................... 7B-84
Actuator Linkage Inspection.............................. 7B-84
Blower Motor Controller Removal and
Installation ....................................................... 7B-84
Blower Motor Controller Inspection ................... 7B-85
HVAC Control Module Removal and
Installation ....................................................... 7B-85
Sunload Sensor Removal and Installation ........ 7B-85
Sunload Sensor Inspection ............................... 7B-86
Outside Air Temperature Sensor Removal
and Installation ................................................ 7B-86
Outside Air Temperature Sensor Inspection ..... 7B-86
Inside Air Temperature Sensor Removal and
Installation ....................................................... 7B-86
Inside Air Temperature Sensor Inspection ........ 7B-86
Condenser Cooling Fan Relay Inspection......... 7B-87
Condenser Cooling Fan Removal and
Installation ....................................................... 7B-87
Condenser Cooling Fan Inspection ................... 7B-87
Condenser Assembly On-Vehicle Inspection .... 7B-87

Downloaded from www.Manualslib.com manuals search engine 7A-2 Heater and Ventilation:
Schematic and Routing Diagram
Heater and Ventilation Wiring Circuit DiagramS6RW0D7102001
Non–A/C
Manual A/C
Refer to “A/C System Wiring Diagram in Section 7B”.
Auto A/C
Refer to “A/C System Wiring Diagram in Section 7B”.
Component Location
Electronic Control System Components LocationS6RW0D7103001
Refer to “Electronic Control System Components Location in Section 7B” (non-A/C and manual A/C) or “Electronic
Control System Components Location in Section 7B” (auto A/C).
5V
BLK
RED/BLK3
5 72
G154-3
G154-4
G154-7
G154-8
G154-10
G154-13
G155-2
G155-3
G155-7
G155-6
G155-1
G154-9
G154-14
BLK/WHT
YEL
BLU/WHT
RED
RED/BLKRED
GRN
GRN/YEL
RED/YEL
RED/BLU
BLK/ORN
46
8
BLU
YELGRN
WHT
13
1514
[A]21
BLK/RED
12V
BLK/YELBLK/WHTM
BLK
1IG1
IG2
12
BLK/RED
M 10
11
11
BLU/WHT 19
16
17
18 9 20
I6RW0C710003-01
[A]: Illumination control model 6. Blower motor resistor 12. Main fuse box 18. Illumination light
1. Ignition switch 7. Junction block assembly 13. Blower speed selector 19. Rear defogger relay
2. Blower motor 8. BCM 14. Air intake selector 20. Rear defogger
3. HVAC control unit 9. ECM 15. Rear defogger switch 21. Tail light
4. Lighting switch 10. Air intake control actuator 16. “REC” indicator light
5. Blower motor relay 11. To BCM 17. Rear defogger indicator

Downloaded from www.Manualslib.com manuals search engine Heater and Ventilation: 7A-3
Diagnostic Information and Procedures
Heater and Ventilation Symptom DiagnosisS6RW0D7104001
Condition Possible cause Correction / Reference Item
Blower motor does not
operate with blower
speed selector ONFuse blownCheck related fuses, and then check for short
circuit to ground.
Blower motor relay faultyCheck blower motor relay referring to “Blower
Motor Relay Inspection”.
Blower motor resistor faultyCheck blower motor resistor referring to
“Blower Motor Resistor Inspection”.
Blower speed selector faultyCheck blower speed selector referring to
“Blower Speed Selector Inspection”.
Blower motor faultyCheck blower motor referring to “Blower Motor
Inspection”.
Wiring or grounding faultyRepair as necessary.
Incorrect temperature
outputTemperature control cable broken or
bent (non-A/C and manual A/C)Check temperature control cable.
Temperature selector faulty (non-A/C
and manual A/C)Check temperature selector.
Incorrect installation of temperature
control cable (non-A/C and manual A/C)Check position and adjust it as necessary.
Temperature control door assembly
brokenRepair temperature control door assembly.
Air ducts cloggedRepair air ducts.
Heater core leaked or cloggedReplace heater core.
Heater hoses leaked or cloggedReplace heater hoses.
Thermostat faultyCheck thermostat referring to “Thermostat
Inspection in Section 1F”.
Temperature control actuator faulty
(auto A/C)Check temperature control actuator referring to
“Temperature Control Actuator and Its Circuit
Inspection in Section 7B”.
HVAC control module faulty (auto A/C)Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit in Section 7B”.
Wiring or grounding faulty (auto A/C)Repair as necessary.
Air outlet port does not
change or does not agree
with air flow selector’s
position even if air flow
selector is changedAir flow control cable broken or bent
(non-A/C and manual A/C)Check air flow control cable.
Air flow selector faulty (non-A/C and
manual A/C)Check air flow selector.
Incorrect installation of air flow control
cable (non-A/C and manual A/C)Check position and adjust it as necessary.
Air flow control door assembly brokenRepair air flow control door assembly.
Air ducts leaked or cloggedRepair air ducts.
Air flow control actuator faulty (auto A/C)Check air flow control actuator referring to “Air
Flow Control Actuator and Its Circuit Inspection
in Section 7B”.
HVAC control module faulty (auto A/C)Check HVAC control module referring to
“Inspection of HVAC Control Module and Its
Circuit in Section 7B”.
Wiring or grounding faulty (auto A/C)Repair as necessary.
Air intake door does not
change even if air intake
mode is changedAir intake door brokenRepair air intake door.
Air intake control actuator faultyCheck air intake control actuator referring to
“Air Intake Control Actuator Inspection”.
Air intake selector faultyCheck air intake selector referring to “Air Intake
Selector Inspection”.
Wiring or grounding faultyRepair as necessary.

Downloaded from www.Manualslib.com manuals search engine 7A-4 Heater and Ventilation:
Repair Instructions
HVAC Unit ComponentsS6RW0D7106001
For non-A/C and manual A/C, refer to “HVAC Unit
Components in Section 7B”.
For auto A/C, refer to “HVAC Unit Components in
Section 7B”.
HVAC Unit Removal and Installation (Non-A/C)S6RW0D7106002
For manual A/C and auto A/C, refer to “HVAC Unit
Removal and Installation in Section 7B”.
Removal
1) Drain engine coolant referring to “Cooling System
Draining in Section 1F”, and then disconnect heater
hoses from HVAC unit.
2) Remove cowl top cover from vehicle body referring
to “Cowl Top and Front Lower Crossmember
Components in Section 9K”.
3) Remove instrument panel from vehicle body
referring to “Instrument Panel Removal and
Installation in Section 9C”.
4) Remove HVAC unit (1) from vehicle body by
removing nuts (2).Installation
Reverse removal procedure noting the following
instructions.
• Be careful not to catch any cable and wiring harness
in inappropriate position.
• Adjust control cables of HVAC control unit referring to
“HVAC Control Unit Removal and Installation”.
• Refill cooling system with coolant referring to “Cooling
System Flush and Refill in Section 1F”.
Blower Motor Removal and InstallationS6RW0D7106003
Removal
1) Disconnect negative (–) cable from battery.
2) Disconnect connector (1) from blower motor (2).
3) Remove blower motor (2) from HVAC unit as follows.
a) Remove screws (4).
b) Release tub (3) to arrow direction.
c) Hold Step b) and turn blower motor (2) to arrow
direction.
Installation
Reverse removal procedure.
Blower Motor InspectionS6RW0D7106004
• Check blower motor for resistance between two
terminals as shown.
If there is no continuity, replace blower motor.
2
2
2
1
I7RW01710003-01
3
2
b)
c)
1
4
4I7RW01710004-02
I7RW01710005-01

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-5
A/C System Wiring DiagramS6RW0D7212002
[A]
7
WHT
GRN5YELBLK
3
G154-3
G154-4
G154-7
G154-8
G154-10
G154-13
G154-5
G154-6
G155-5
G155-2
G155-3
G155-7
G155-6
G155-1
G154-9
G154-14
BLK/WHT
YEL
BLU/WHT
RED
BRN
GRN/WHT
RED/BLK
RED
GRN
GRN/YEL
RED/YEL
RED/BLU
20
21
23 22
BLK/RED
6 2
MBLK/WHTBLK/YEL
M
11
4RED/YEL 1
E01-49
12
E01-16
GRY 13
12V
BLU/WHTE01-3510
E01-48
18
19RED/BLK
BLK/RED
BLK/RED
BRN/WHTE01-60
E01-1
E01-29BLK/WHT
M
BLU/YELBLK/YEL
5V5V 5V
WHT/BLK
9
ORN
14E01-36
C01-12C01-14GRY/REDRED/BLU
E01-41
RED/BLK
RED
WHT
8
BLK
BLK/ORN
BLU IG1
IG2
5V
17
28
29
31
2726 2524
16
16
30
34
33E01-4 E01-19WHTRED
C01-50C01-49WHTRED
32
LT GRN
C01-57
C01-2415
GRY/BLU5V
I6RW0C721002-01
[A]: Illumination control model 9. A/C refrigerant pressure
sensor18. Condenser cooling fan relay 27. Illumination light
1. Ignition switch 10. ECM 19. Condenser cooling fan motor 28. Rear defogger relay
2. Blower motor 11. Air intake control actuator 20. Blower speed selector 29. Rear defogger
3. HVAC control unit 12. Compressor relay 21. A/C switch 30. Main relay
4. Lighting switch 13. Compressor 22. Air intake selector 31. Tail light
5. Blower motor relay 14. Evaporator temperature
sensor23. Rear defogger switch 32. TCM
6. Blower motor resistor 15. ECT sensor 24. “A/C” indicator light 33. To other control module and DLC
7. Junction block assembly 16. To BCM 25. “REC” indicator light 34. ABS control module
8. BCM 17. Main fuse box 26. Rear defogger indicator