wiring body SUZUKI SWIFT 2004 2.G Service Repair Manual

Downloaded from www.Manualslib.com manuals search engine 7B-50 Air Conditioning System: Automatic Type
DTC B1503: A/C Evaporator Air Temperature Sensor and/or Its Circuit MalfunctionS7RS0B7224011
Wiring Diagram2
Inside air temperature sensor signal circuit check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Check for proper connection to HVAC control module connector at “G52-6” and “G52-3” terminals.
3) If OK, measure resistance between “PNK/BLK” wire terminal of inside air temp erature sensor connector and
“G52-6” terminal of HVAC control module connector.
Is resistance below 5
Ω? Go to Step 3. “PNK/BLK” wire open or
high resistance circuit.
3 Inside air temperature sensor signal circuit check
1) Measure resistance between “PNK/BLK” wire terminal of
inside air temperature sensor connector and vehicle
body ground.
Is resistance infinity? Go to Step 4.
“PNK/BLK” wire shorted
to ground circuit.
4 Inside air temperature sensor signal circuit check
1) Measure voltage between “PNK/BLK” wire terminal of
inside air temperature sensor connector and vehicle
body ground with ignition switch turned ON.
Is voltage 0 V? Go to Step 5.
“PNK/BLK” wire shorted
to other circuit.
5 Inside air temperature sensor ground circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between “ORN” wire terminal of inside air temperature sensor connector and vehicle
body ground.
Is resistance below 5
Ω? Go to Step 7. Go to Step 6.
6 Inside air temperature sensor ground circuit check
1) Measure resistance between “G52-3” terminal of HVAC
control module connector and vehicle body ground.
Is resistance below 5
Ω? “ORN” wire open or high
resistance circuit.
HVAC control module
faulty.
7 Inside air temperature sensor check
1) Check inside air temperature sensor referring to “Inside
Air Temperature Sensor Inspection”.
Is it in good condition? HVAC control module
faulty.
Inside air temperature
sensor faulty.
Step Action Yes No
5V
WHT/BLK
ORN G52-4
G52-3
2
1
3
7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
I5RS0A722011-01
1. HVAC control module
2. Evaporator temperature sensor 3. To other sensors

Downloaded from www.Manualslib.com manuals search engine 7B-52 Air Conditioning System: Automatic Type
DTC B1504: Sunload Sensor and/or Its Circuit MalfunctionS7RS0B7224012
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting7
Evaporator temperature sensor check
1) Check evaporator temperature sensor referring to
“Evaporator Thermistor (Evaporator Temperature
Sensor) Inspection”.
Is it in good condition? HVAC control module
faulty.
Evaporator temperature
sensor faulty.
Step Action Yes No
5V
PNK G52-2
G52-5
YEL/BLK
2
1
7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
I5RS0A722012-01
1. HVAC control module
2. Sunload sensor
DTC Detecting Condition Trouble Area
Sunload sensor signal voltage is higher than or lower than specified value for
specified time continuously. • Sunload sensor circuit
• Sunload sensor
• HVAC control module
Step
Action YesNo
1 Sunload sensor power supply circuit check
1) Disconnect sunload sensor connector.
2) Check for proper connection to sunload sensor at “PNK”
and “YEL/BLK” wire terminals.
3) If OK, measure voltage between “PNK” wire terminal of sunload sensor connector and vehicle body ground with
ignition switch turned ON.
Is voltage 4 – 6 V? Go to Step 5.
Go to Step 2.
2 Sunload sensor power supply circuit check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Check for proper connection to HVAC control module connector at “G52-2” and “G52-5” terminals.
3) If OK, measure resistance between “PNK” wire terminal of sunload sensor connector and “G52-2” terminal of
HVAC control module connector.
Is resistance below 5
Ω? Go to Step 3. “PNK” wire open or high
resistance circuit.
3 Sunload sensor power supply circuit check
1) Measure resistance between “PNK” wire terminal of
sunload sensor connector and vehicle body ground.
Is resistance infinity? Go to Step 4. “PNK” wire shorted to
ground circuit.

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-53
DTC B1511: Temperature Control Actuator (Position Sensor) and/or Its Circuit MalfunctionS7RS0B7224013
Wiring Diagram
DTC Detecting Condition and Trouble Area4
Sunload sensor power supply circuit check
1) Measure voltage between “PNK” wire terminal of
sunload sensor connector and vehicle body ground with
ignition switch turned ON.
Is voltage 0 V? Go to Step 5. “PNK” wire shorted to
other circuit.
5 Sunload sensor signal circuit check
1) Disconnect HVAC control modul e connector with ignition
switch turned OFF.
2) Measure resistance between “YEL/BLK” wire terminal of sunload sensor connector and vehicle body ground.
Is resistance infinity? Go to Step 6. “YEL/BLK” wire shorted
to ground circuit.
6 Sunload sensor signal circuit check
1) Measure resistance between “G52-5” terminal of HVAC
control module connector and “YEL/BLK” wire terminal
of sunload sensor connector.
Is resistance below 5
Ω? Go to Step 7. “YEL/BLK” wire open or
high resistance circuit.
7 Sunload sensor signal circuit check
1) Measure voltage between “YEL/BLK” wire terminal of
sunload sensor connector and vehicle body ground with
ignition switch turned ON.
Is voltage 0 V? Go to Step 8.
“YEL/BLK” wire shorted
to other circuit.
8 Sunload sensor check
1) Check sunload sensor referring to “Sunload Sensor
Inspection”.
Is it in good condition? HVAC control module
faulty.
Sunload sensor faulty.
Step
Action YesNo
7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
M 12V
5V 5V
YEL
WHT
GRY/BLU
GRY/RED
2
1
ORN
G51-3
G51-4
G52-1
G52-13
G52-3
3
4
I5RS0A722013-01
1. HVAC control module 2. Temperature control actuator 3. To air flow control actuator4. To other sensors
DTC Detecting Condition Trouble Area
Temperature control actuator position sensor signal voltage is higher than or
lower than specified value for specified time continuously. • Temperature control actuator circuit
• Temperature control actuator
• HVAC control module

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-55
DTC B1512: Air flow Control Actuator (Position Sensor) and/or Its Circuit MalfunctionS7RS0B7224014
Wiring Diagram
DTC Detecting Condition and Trouble Area8
Position sensor signal circuit check
1) Measure resistance between “YEL” wire terminal of
temperature control actuator connector and vehicle body
ground.
Is resistance infinity? Go to Step 9. “YEL” wire shorted to
ground circuit.
9 Position sensor signal circuit check
1) Measure voltage between “YEL” wire terminal of
temperature control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V? Go to Step 10. “YEL” wire shorted to
other circuit.
10 Position sensor ground circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between “ORN” wire terminal of temperature control actuator connector and vehicle body
ground.
Is resistance below 5
Ω? Go to Step 12. Go to Step 11.
11 Position sensor ground circuit check
1) Measure resistance between “G52-3” terminal of HVAC
control module connector and vehicle body ground.
Is resistance below 5
Ω? “ORN” wire open or high
resistance circuit.
HVAC control module
faulty.
12 Temperature control actuator check
1) Check temperature control actuator referring to
“Temperature Control Actuator Inspection”.
Is it in good condition? HVAC control module
faulty.
Temperature control
actuator faulty.
Step Action Yes No
7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
M 12V
5V 5V
WHT/BLU
WHT
BRN/WHT
BRN/YEL
2
1
ORN
G51-1
G51-2
G52-1
G52-14
G52-3
3
4
I5RS0A722014-01
1. HVAC control module 2. Air flow control actuator3.To temperature control actuator 4. To other sensors
DTC Detecting Condition Trouble Area
Air flow control actuator position sensor signal voltage is higher than or lower
than specified value for specified time continuously. • Air flow control actuator circuit
• Air flow control actuator
• HVAC control module

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-57
DTC B1513: Temperature Control Actuator and/or Its Circuit MalfunctionS7RS0B7224015
Wiring Diagram
DTC Detecting Condition and Trouble Area8
Position sensor signal circuit check
1) Measure resistance between “WHT/BLU” wire terminal
of air flow control actuator connector and vehicle body
ground.
Is resistance infinity? Go to Step 9. “WHT/BLU” wire
shorted to ground
circuit.
9 Position sensor signal circuit check
1) Measure voltage between “WHT/BLU” wire terminal of
air flow control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V? Go to Step 10. “WHT/BLU” wire
shorted to other circuit.
10 Position sensor ground circuit check
1) Connect HVAC control module connector with ignition
switch turned OFF.
2) Measure resistance between “ORN” wire terminal of air flow control actuator connector and vehicle body ground.
Is resistance below 5
Ω? Go to Step 12. Go to Step 11.
11 Position sensor ground circuit check
1) Measure resistance between “G52-3” terminal of HVAC
control module connector and vehicle body ground.
Is resistance below 5
Ω? “ORN” wire open or high
resistance circuit.
HVAC control module
faulty.
12 Air flow control actuator check
1) Check air flow control actuator referring to “Air Flow
Control Actuator Inspection”.
Is it in good condition? HVAC control module
faulty.
Air flow control actuator
faulty.
Step Action Yes No
7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
M 12V
5V 5V
YEL
WHT
GRY/BLU
GRY/RED
2
1
ORN
G51-3
G51-4
G52-1
G52-13
G52-3
3
4
I5RS0A722013-01
1. HVAC control module 2. Temperature control actuator 3. To air flow control actuator 4. To other sensors
DTC Detecting Condition Trouble Area
Difference between target opening an d actual opening is higher than
specified value even though temperature control actuator has operated for 16
seconds. • Temperature control actuator circuit
• Temperature control linkage
• Temperature control actuator
• HVAC unit
• HVAC control module

Downloaded from www.Manualslib.com manuals search engine 7B-60 Air Conditioning System: Automatic Type
DTC B1514: Air Flow Control Actuator and/or Its Circuit MalfunctionS7RS0B7224016
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
NOTE
• When DTC B1502, B1503 and B1513 are indicated together, it is possible that “ORN” wire circuit open.
• When DTC B1513 is indicated together, it is possible that “WHT” wire circuit open.

7812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
M 12V
5V 5V
WHT/BLU
WHT
BRN/WHT
BRN/YEL
2
1
ORN
G51-1
G51-2
G52-1
G52-14
G52-3
3
4
I5RS0A722014-01
1. HVAC control module 2. Air flow control actuator3. To temperature control actuator 4. To other sensors
DTC Detecting Condition Trouble Area
Difference between target opening and actual opening is higher than
specified value even though air flow control actuator has operated for 16
seconds. • Air flow control actuator circuit
• Air flow control linkage
• Air flow control actuator
• HVAC unit
• HVAC control module
Step
Action YesNo
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC.
Is there DTC B1512? Go to applicable DTC
diag. flow.
Go to Step 2.
2 Visual check
1) Check if there is any obstruction in operating range of
actuator linkage and if actuator linkage operates
smoothly.
Is it in good condition? Go to Step 3.
Obstruction in operating
range of actuator
linkage, actuator linkage
faulty and/or internal
fault of HVAC unit.
3 Wire harness check
1) Disconnect connector from air flow control actuator with
ignition switch turned OFF.
2) Check for proper connection to air flow control actuator
connector at “BRN/WHT” and “BRN/YEL” wire terminals.
3) If OK, measure voltage between “BRN/WHT” wire terminal of air flow control actuator connector and
vehicle body ground with ignition switch turned ON when
air flow selector is operation to DEF direction.
Is voltage 10 – 14 V? Go to Step 7.
Go to Step 4.

Downloaded from www.Manualslib.com manuals search engine 7B-62 Air Conditioning System: Automatic Type
DTC B1541: HVAC Control Module Back-Up Power Supply MalfunctionS7RS0B7224017
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting11
Position sensor circuit check
1) Check air flow control actuator position sensor circuit
referring to Step 1 to Step 5 and Step 10 to Step 11 of
“DTC B1512: Air flow Control Actuator (Position Sensor)
and/or Its Circuit Malfunction”.
Is it in good condition? Go to Step 12. Repair circuit.
12 Air flow control actuator check
1) Check air flow control actuator referring to “Air Flow
Control Actuator Inspection”.
Is it in good condition? HVAC control module
faulty.
Air flow control actuator
faulty.
Step Action Yes No
WHT/RED
2 17812910
65 431516 14 13 12 11
G52
789101920121112
65 431718 16 15 14 13
G51
3
G52-16
I5RS0A722015-01
1. HVAC control module
2. Junction block assembly 3. Circuit fuse
DTC Detecting Condition Trouble Area
Back-up power supply voltage is lo wer than specified value continuously. • Battery voltage supply circuit
• HVAC control module
StepAction YesNo
1 DTC check
1) Turn ON ignition switch for 20 sec. or more.
2) Ignition switch turned OF F and connect scan tool to
DLC.
3) Turn ON ignition switch and check DTC.
Is there DTC B1541? Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
2 Battery voltage supply circuit check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Check for proper connection to HVAC control module connector at “G52-16” terminal.
3) If OK, measure voltage between “G52-16” terminal of HVAC control module connector and vehicle body
ground.
Is voltage 10 – 14 V? HVAC control module
faulty.
Circuit fuse blown and/
or “WHT/RED” wire
circuit open or short.

Downloaded from www.Manualslib.com manuals search engine Air Bag System: 8B-53
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.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1044: Passenger Air Bag Initiator Circuit Short to Power CircuitS7RS0B8204025
Wiring Diagram3 1) With ignition switch OFF, disconnect special tools (B)
and (C) from “L32” connector and SDM connector “L29”
from SDM respectively.
2) Release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
3) Measure resistance between “L29-5” terminal and body ground and between “L29-6” terminal and body ground.
Special tool
(A): 09932-76010
(B): 09932-75010
(C): 09932–77320
Is resistance infinity? Substitute a known-
good SDM and recheck.
“BLU/RED” or “YEL/
RED” circuit shorted to
ground in floor harness.
Step Action Yes No
(B)
(C)
"L32"
STEERING WHEEL
DRIVERPASSENGER
(A)
"L29-6"
"L29-5"
I7RS0A820036-01
1
2
3
GRN
RED
7
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-5
P+
L29-6
P-YEL/RED
BLU/RED
YEL/RED
BLU/RED
56
“L32” “G04”
“G10”
[A]
I7RS0A820013-06
[A]: Shorting bar
3. “A/BAG” fuse 6. Passenger air bag (inflator) module
1. From main fuse 4. Junction block assembly 7. Ground for air bag system
2. Ignition switch 5. SDM

Downloaded from www.Manualslib.com manuals search engine 8B-56 Air Bag System:
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.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance HighS7RS0B8204026
Wiring Diagram3 1) With ignition switch OFF, disconnect special tools (B)
and (C) from “L32” connector and SDM connector “L29”
from SDM respectively.
2) Release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
3) Measure voltage from “L29-5” terminal to body ground and from “L29-6” terminal to body ground.
Special tool
(A): 09932-76010
(B): 09932-75010
(C): 09932–77320
With ignition switch ON, is voltage 1 V or less? Substitute a known-
good SDM and recheck.
“BLU/RED” or “YEL/
RED” circuit shorted to
power supply circuit in
floor harness.
Step Action Yes No
(B)
(C)
"L32"
BASE OF COLUMN
DRIVERPASSENGER
(A)
"L29-6"
"L29-5"
I7RS0A820015-02
1
2
3
GRN
RED
8
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-8
DP+
L29-7
DP-GRN/YEL
GRN/ORN
56
“L10”
L29-9
PP+
L29-10
PP-BLU/YEL
BLU/ORN7
“L36”[A]
I7RS0A820016-05
[A]: Shorting bar 3. “A/BAG” fuse 6. Driver seat belt pretensioner
1. From main fuse 4. Junction block assembly 7. Passenger seat belt pretensioner
2. Ignition switch 5. SDM 8. Ground for air bag system

Downloaded from www.Manualslib.com manuals search engine 8B-62 Air Bag System:
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.
• Clear DTCs referring to “DTC Clearance”, if any.
• Repeat “Air Bag Diagnostic System Check” to confirm that the trouble has been corrected.

DTC B1054 / B1058: Driver / Passenger Pretensioner Initiator Circuit Short to Power CircuitS7RS0B8204029
Wiring Diagram2 1) With ignition switch OFF, disconnect special tools (A),
(B) and (C) and SDM connector.
2) Release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
3) Measure resistance between “L29-7” and body ground, and between “L29-8” and body ground (for DTC B1053)
or between “L29-9” and body ground, and between “L29-
10” and body ground (for DTC B1057).
Special tool
(A): 09932-76010
Is resistance infinity? Substitute a known-
good SDM and recheck.
DTC B1053: “GRN/
ORN” circuit or “GRN/
YEL” circuit shorted to
ground.
DTC B1057: “BLU/
ORN” circuit or “BLU/
YEL” circuit shorted to
ground.
Step Action Yes No
"L29-8" "L29-9" "L29-10"
"L29-7"
(A)
STEERING WHEEL(B)
(C)
(A)
"L10", "L36"
I7RS0A820018-02
1
2
3
GRN
RED
8
BLK
L29-27
L29-28 IG
E1
4
“L29”
“L04”
“G32”
“L29”
L29-8
DP+
L29-7
DP-GRN/YEL
GRN/ORN
56
“L10”
L29-9
PP+
L29-10
PP-BLU/YEL
BLU/ORN7
“L36”[A]
I7RS0A820016-05
[A]: Shorting bar 3. “A/BAG” fuse 6. Driver seat belt pretensioner
1. From main fuse 4. Junction block assembly 7. Passenger seat belt pretensioner
2. Ignition switch 5. SDM 8. Ground for air bag system