2008 SUZUKI SWIFT Ground

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-61
4Wire harness check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Check for proper connection to HVAC control module connector at “G51-1” and “G51-2” terminals.
3) If OK, measure resistance between “BRN/WHT” wire terminal of air flow contro l actuator connector and “G51-
1” terminal of HVAC control module connector.
Is resistance below 5
Ω? Go to Step 5. “BRN/WHT” wire open
or high resistance
circuit.
5 Wire harness check
1) Measure resistance between “BRN/WHT” wire terminal
of air flow control actuator connector and vehicle body
ground.
Is resistance infinity? Go to Step 6.
“BRN/WHT” wire
shorted to ground
circuit.
6 Wire harness check
1) Measure voltage between “BRN/WHT” wire terminal of
air flow control actuator connector and vehicle body
ground with ignition switch turned ON.
Is voltage 0 V? Go to Step 7.
“BRN/WHT” wire
shorted to other circuit.
7 Wire harness check
1) Connect connector to HVAC control module with ignition
switch turned OFF.
2) Measure voltage between “BRN/YEL” wire terminal of air flow control actuator connector and vehicle body ground
with ignition switch turned ON when air flow selector is
operation to FACE direction.
Is voltage 10 – 14 V? Go to Step 11. Go to Step 8.
8 Wire harness check
1) Disconnect connector from HVAC control module with
ignition switch turned OFF.
2) Check for proper connection to HVAC control module connector at “G51-1” and “G51-2” terminals.
3) If OK, measure resistance between “BRN/YEL” wire terminal of air flow contro l actuator connector and “G51-
2” terminal of HVAC control module connector.
Is resistance below 5
Ω? Go to Step 9. “BRN/YEL” wire open or
high resistance circuit.
9 Wire harness check
1) Measure resistance between “BRN/YEL” wire terminal of
air flow control actuator connector and vehicle body
ground.
Is resistance infinity? Go to Step 10. “BRN/YEL” wire shorted
to ground circuit.
10 Wire harness check
1) Measure voltage between “BRN/YEL” wire terminal of air
flow control actuator connector and vehicle body ground
with ignition switch turned ON.
Is voltage 0 V? Go to Step 11. “BRN/YEL” wire shorted
to other circuit.
Step Action Yes No

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 7B-64 Air Conditioning System: Automatic Type
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
DTC B1552: Serial Communication Signal MalfunctionS7RS0B7224020
DTC Detecting Condition and Trouble AreaDTC detecting condition Trouble area
Serial communication signal is higher than or lower than specified value for
specified time continuously. • Serial communication line of BCM
• BCM (included in junction block
assembly)
• Information display
• HVAC control module
Step Action YesNo
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Disconnect connector from information display.
3) Turn ignition switch ON and check DTC.
Is there DTC B1551? Go to Step 2.
Information display
faulty.
2 Wire harness check
1) Disconnect connectors from BCM and HVAC control
module.
2) Measure resistance between “G37-11” terminal of BCM connector and “G51-7” terminal of HVAC control module
connector.
Is resistance below 5
Ω? Go to Step 3. “YEL” wire open or high
resistance circuit.
3 Wire harness check
1) Measure resistance between “G51-7” terminal of HVAC
control module connector and vehicle body ground.
Is resistance infinity? Go to Step 4. “YEL” wire shorted to
ground circuit.
4 Wire harness check
1) Measure voltage between “G51-7” terminal of HVAC
control module connector and vehicle body ground with
ignition switch turned ON.
Is voltage 0 V? Go to Step 5. “YEL” wire shorted to
other circuit.
5 Serial communication signal check
1) Connect connectors to BCM and HVAC control module.
2) Using oscilloscope, check that serial communication
signal is outputted referring to “Reference waveform
No.8” of “Inspection of BCM and its Circuits in Section
10B”.
Is serial communication signal outputted at “G37-11”
terminal of BCM connector? HVAC control module
faulty.
BCM (included in
junction block
assembly) faulty.
DTC detecting condition
Trouble area
Data received by HVAC control module from BCM is erroneous continuously. • BCM (included in junction block assembly)
• HVAC control module

Downloaded from www.Manualslib.com manuals search engine 7B-68 Air Conditioning System: Automatic Type
G51-8 BLU/REDBlower motor control
voltage feedback 10 – 14 V Ignition switch turned ON, blower speed selector OFF
About 8.5 V Ignition switch turned ON, blower speed selector 1st
position
About 6.5 V Ignition switch turned ON, blower speed selector 2nd
position
About 5.5 V Ignition switch turned ON, blower speed selector 3rd
position
About 4.0 V Ignition switch turned ON, blower speed selector 4th
position
About 3.0 V Ignition switch turned ON, blower speed selector 5th
position
About 2.0 V Ignition switch turned ON, blower speed selector 6th
position
About 1.0 V Ignition switch turned ON, blower speed selector 7th
position
Below 1.0 V Ignition switch turned ON, blower speed selector HIGH
position
G51-9 GRY Blower motor controller 0 – 1 V
Ignition switch turned ON, blower speed selector OFF
position
2 – 3 V Ignition switch turned ON, blower speed selector
between 1st and HIGH position
G51-10 BLK/RED Rear defogger indicator 0 – 1 V Ignition switch turned ON, rear defogger switch OFF
10 – 14 V Ignition switch turned ON, rear defogger switch ON
G51-11 RED/YEL Illumination switch 0 – 1 V Ignition switch turned ON, lighting switch OFF position
10 – 14 V Ignition switch turned ON, lighting switch ON position
G51-12 BLK/YEL Illumination ground 0 – 1 V Full-time
G51-13 — — — —
G51-14 — — — —
G51-15 RED Air intake actuator
(RECIRCULATION AIR) 0 – 1 VIgnition switch turned ON, air intake selector is
recirculation air mode or air intake actuator is working
in operation to recirculation air position or fresh air
position.
10 – 14 V Ignition switch turned ON, ai
r intake selector is fresh
air mode (air intake actuator fresh air position).
G51-16 GRN/RED Air intake actuator
(MIX AIR) 10 – 14 V
Ignition switch turned ON, air intake actuator is
recirculation air or fresh air position.
0 – 1 V Ignition switch turned ON, air intake actuator is mix air
position or air intake actuator is working in operation to
recirculation air position or fresh air position.
G51-17 GRN Air intake actuator
(FRESH AIR) 0 – 1 V
Ignition switch turned ON, ai
r intake selector is fresh
air mode or air intake actuator is working in operation
to recirculation air position or fresh air position.
10 – 14 V Ignition switch turned ON, air intake selector is
recirculation air mode (air intake actuator recirculation
air position).
G51-18 GRN/WHT A/C switch signal Refer to “Inspe ction of BCM and its Circuits in Section 10B”
G51-19 BLU/WHT Electric load signal for
blower motor 10 – 14 V
Ignition switch turned ON, blower speed selector OFF
or between 1st and 5th position
0 – 2 V Ignition switch turned ON, blower speed selector
between 6th and HIGH position
G51-20 BRN Rear defogger switch 0 – 1 V
Ignition switch turned ON, rear defogger switch ON
(rear defogger switch is kept in push) position
4 – 6 V Ignition switch turned ON, rear defogger switch OFF
position
Terminal Wire Color Circuit
Normal
Vo l ta g e Condition

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-69
Terminal Wire Color CircuitNormal
Vo l ta g e Condition
G52-1 WHT Output of 5 V power
source for air flow control
actuator position sensor
and temperature control
actuator position sensor 4 – 6 V Ignition switch turned ON
G52-2 PNK Output of 5 V power
source for sunload sensor 4 – 6 V Ignition switch turned ON
G52-3 ORN Ground for sensors Below 0.3 V Ignition switch turned ON
G52-4 WHT/BLK Evaporator temperature
sensor signal 3.45 – 3.65 V
Ignition switch turned ON, evaporator temperature 0
°
C (32 °F)
2.55 – 2.85 V Ignition switch turned ON, evaporator temperature
15
°C (59 ° F)
1.7 – 2.1 V Ignition switch turned ON, evaporator temperature
30
°C (86 ° F)
G52-5 YEL/BLK Sunload sensor signal
G52-6 PNK/BLK Inside air temperature
sensor signal About 2.0 V
Ignition switch turned ON, room temperature 25
°C
(77 °F)
About 2.8 V Ignition switch turned ON, room temperature 0
°C
(32 °F)
G52-7 — — — —
G52-8 RED/BLK Electric power source 10 – 14 V Ignition switch turned ON
G52-9 — — — —
G52-10 — — — —
G52-11 BLK/ORN Ground for HVAC control
module Below 0.3 V Ignition
switch turned ON
G52-12 — — — —
G52-13 YEL Temperature control
actuator position sensor
signal About 4.0 V
Ignition switch turned ON, temperature selector MAX
COOL position
About 2.0 V Ignition switch turned ON, temperature selector MAX
HOT position
G52-14 WHT/BLU Air flow control actuator
position sensor signal About 4.0 V
Ignition switch turned ON
, air flow selector VENT
position
About 1.6 V Ignition switch ON, air flow selector DEF position
G52-15 — — — —
G52-16 WHT/RED Electric power source for
back-up 10 – 14 V Full-time

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-71
ECM Voltage Values Table for Relation of A/C Control
Repair Instructions
Operation Procedure for Refrigerant ChargeS7RS0B7226001
Refer to “Operation Procedure for Refrigerant Charge”.Terminal Wire Color Circuit Normal Value Condition
C37-14 GRY/RED Output of 5 V power
source 4.5 – 5.5 V Ignition switch turned ON
C37-15 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-24 LT GRN Engine coolant temp.
(ETC) sensor signal 3.3 – 3.8 V Ignition switch turned ON, ECT at 0
°C (32 ° F)
1.38 – 1.72 V Ignition switch turned ON, ECT at 50 °C (122 °F)
C37-30 BLK Ground for ECM Below 0.3 V Ignition switch turned ON
C37-55 ORN Ground for sensors Below 0.3 V Ignition switch turned ON
C37-58 BLK/ORN Ground for ECM Below 0.3 V Ignition switch turned ON E23-1 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-3 RED CAN (high)
communication line
(active high signal)
for BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-16 BLK/RED Main power supply 10 – 14 V Ignition switch turned ON
E23-18 WHT CAN (low)
communication line
(active low signal) for
BCM and
combination meterRefer to “DTC P2101: Throttle Actu
ator Control Motor Circuit Range /
Performance in Section 1A”
E23-19 BLU/WHT Electric load signal
for blower motor 10 – 14 V
Ignition switch turned ON, blower speed selector
OFF or between 1st and 5th position
0 – 1 V Ignition switch turned ON, blower speed selector
between 6th and HIGH position
E23-46 LT GRN Radiator fan relay
No.1 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 95
°C (203 ° F), or A/C refrigerant pressure:
below 600 kPa (87 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
97.5
°C (207.5 °F) or higher, or A/C refrigerant
pressure: 1100 kPa (159.5 psi) or higher.
E23-47 GRY A/C compressor relay
output 10 – 14 V Engine running, A/C request signal high input
0 – 1 V Engine running, A/C request signal low input
E23-48 GRN Radiator fan relay
No.2 and No.3 output 10 – 14 V
Ignition switch turned ON, engine coolant temp.:
below 100
°C (212 °F), or A/C refrigerant
pressure: below 1200 kPa (174 psi).
0 – 2 V Ignition switch turned ON, engine coolant temp.:
102.5
°C (216.5 ° F) or higher, or A/C refrigerant
pressure: 1500 kPa (217.5 psi) or higher.
E23-55 RED A/C refrigerant
pressure sensor
signal 1.46 – 1.71 V
Engine running, A/C refrigerant pressure at 0.8
MPa (8.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
2.55 – 2.80 V Engine running, A/C refrigerant pressure at 1.6
MPa (16.0 kg/cm
2) (A/C refrigerant pressure
measured by manifold gauge)
E23-60 BRN/WHT Main power supply
relay output 10 – 14 V Ignition switch turned OFF
0 – 2 V Ignition switch turned ON

Downloaded from www.Manualslib.com manuals search engine Table of Contents 8- i
8
Section 8
CONTENTS
Restraint
Precautions ................................................. 8-1
Precautions............................................................. 8-1
Precautions on Restraint ....................................... 8-1
Seat Belts .......... ............................... ........ 8A-1
Precautions........................................................... 8A-1
Precautions on Service a nd Diagnosis of Seat
Belt .................................................................... 8A-1
General Description ............................................. 8A-1 Seat Belt Construction ........................................ 8A-1
Diagnostic Information and Procedures ............ 8A-2 Repair and Inspection Required after Accident ............................................................ 8A-2
Repair Instructions .............................................. 8A-3 Front Seat Belt Components ............................... 8A-3
Front Seat Belt Removal and Installation ............ 8A-4
Front Seat Belt Inspection ................................... 8A-4
Rear Seat Belt Components ............................... 8A-6
Rear Seat Belt Removal and Installation ............ 8A-7
Rear Seat Belt Inspection ................................... 8A-7
Specifications ....................................................... 8A-7
Tightening Torque Specifications ........................ 8A-7
Air Bag System ............... ......................... 8B-1
Precautions........................................................... 8B-1
Precautions on Service and Diagnosis of Air Bag System....................................................... 8B-1
Precautions on Handling and Storage of Air Bag System Components . ................................ 8B-2
Precautions on Disposal of Air Bag and Seat
Belt Pretensioner .............................................. 8B-5
General Description ............................................. 8B-5 Air Bag System Construction .............................. 8B-5
Air Bag System Input / Output Table .................. 8B-6
Schematic and Routing Diagram ........................ 8B-7 Air Bag System Wiring Circuit Diagram .............. 8B-7
Component Locatio n ........................................... 8B-9
Air Bag System Components, Wiring and Connectors Location ......................................... 8B-9
Diagnostic Information and Procedures .......... 8B-10 Air Bag Diagnostic System Check .................... 8B-10
Air Bag Diagnostic System Check Flow ............ 8B-10
DTC Table ......................................................... 8B-11
DTC Check ....................................................... 8B-12 DTC Clearance ................................................. 8B-12
Scan Tool Data ................................................. 8B-13
“AIR BAG” Warning Right Comes ON Steady .. 8B-13
“AIR BAG” Warning Right Does Not Come
ON ................................................................... 8B-15
“AIR BAG” Warning Right Flashes .................... 8B-16
DTC B1013: SDM fault...................................... 8B-17
DTC B1014: “AIR BAG” Warning Right Circuit Failure ............................................................. 8B-17
DTC B1016: Power Source Voltage High ......... 8B-18
DTC B1017: Power Source Voltage Low .......... 8B-20
DTC B1021: Front Air Bag Module Deployed ... 8B-22
DTC B1024 / B1025: Side-Air Bag (Driver / Passenger) Deployed...................................... 8B-22
DTC B1026: Pretensioner Activated ................. 8B-23
DTC B1027: Reusable Number Exceeded ....... 8B-24
DTC B1031: Driver Air Bag Initiator Circuit
Resistance High .............................................. 8B-24
DTC B1032: Driver Air Bag Initiator Circuit
Resistance Low ............................................... 8B-29
DTC B1033: Driver Air Bag Initiator Circuit
Short to Ground............................................... 8B-34
DTC B1034: Driver Air Bag Initiator Circuit
Short to Power Circuit .... ................................. 8B-39
DTC B1041: Passenger Air Bag Initiator Circuit Resistance High ................................... 8B-44
DTC B1042: Passenger Air Bag Initiator Circuit Resistance Low.................................... 8B-47
DTC B1043: Passenger Air Bag Initiator Circuit Short to Ground ................................... 8B-50
DTC B1044: Passenger Air Bag Initiator Circuit Short to Power Circ uit .......................... 8B-53
DTC B1051 / B1055: Driver / Passenger Pretensioner Initiator Circuit Resistance
High ................................................................. 8B-56
DTC B1052 / B1056: Driver / Passenger Pretensioner Initiator Circu it Resistance Low .. 8B-58
DTC B1053 / B1057: Driver / Passenger Pretensioner Initiator Circuit Short to Ground .. 8B-60
DTC B1054 / B1058: Driver / Passenger Pretensioner Initiator Circuit Short to Power
Circuit .............................................................. 8B-62
DTC B1061 / B1065: Driver / Passenger Side- Air Bag Initiator Circuit Resistance High ......... 8B-64

Downloaded from www.Manualslib.com manuals search engine 8-ii Table of Contents
DTC B1062 / B1066: Driver / Passenger Side-Air Bag Initiator Circuit Resistance Low .......... 8B-67
DTC B1063 / B1067: Driver / Passenger Side- Air Bag Initiator Circuit S hort to Ground .......... 8B-70
DTC B1064 / B1068: Driver / Passenger Side- Air Bag Initiator Circu it Short to Power
Circuit .............................................................. 8B-73
DTC B1071: Forward-Sensor Performance Problem ........................................................... 8B-76
DTC B1072: Forward-Sensor Communication Error ................................................................ 8B-76
DTC B1073: Forward-Sensor Circuit Short to Ground ............................................................ 8B-76
DTC B1074: Forward-Sensor Circuit Short to Power Circuit or Open ..................................... 8B-78
DTC B1081 / B1091: Driver / Passenger Side- Sensor Performance Probl em ......................... 8B-80
DTC B1082 / B1092: Driver / Passenger Side- Sensor Communication Erro r .......................... 8B-80
DTC B1083 / B1093: Driver / Passenger Side- Sensor Circuit Short to Ground ....................... 8B-80
DTC B1084 / B1094: Driver / Passenger Side- Sensor Circuit Short to Power Circuit or
Open ............................................................... 8B-81
DTC B1085 / B1095: Wrong Side-Sensor (Driver Side / Passenger) ID ........................... 8B-83
DTC B1361 / B1365: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Resistance
High ................................................................. 8B-84
DTC B1362 / B1366: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Resistance
Low ................................................................. 8B-86
DTC B1363 / B1367: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Short to
Ground ............................................................ 8B-88
DTC B1364 / B1368: Driver / Passenger Side Curtain-Air Bag Initiator Circuit Short to
Power Circuit ................................................... 8B-90
Contact Coil Cable and Its Circuit Check .......... 8B-93 Inspection of Intermittent and Poor
Connections .................................................... 8B-95
Repair and Inspection Required after Accident .......................................................... 8B-96
Repair Instructions ............ ................................8B-98
Disabling Air Bag System.................................. 8B-98
Enabling Air Bag System .................................. 8B-99
SDM Removal and Installation ........................ 8B-100
SDM Inspection ............................................... 8B-101
Driver Air Bag (Inflato r) Module Removal and
Installation ..................................................... 8B-101
Driver Air Bag (Inflator) Module Inspection ..... 8B-103
Passenger Air Bag (Inflator) Module Removal and Installation .............................................. 8B-103
Passenger Air Bag (I nflator) Module
Inspection ...................................................... 8B-105
Side-Air Bag (Inflator) Module Removal and
Installation ..................................................... 8B-105
Side-Air Bag (Inflator) Inspection .................... 8B-107
Side Curtain-Air Bag (Inflator) Module Removal and Installation ............................... 8B-107
Side Curtain-Air Bag (Inflator) Module Inspection ...................................................... 8B-109
Forward-Sensor Removal and Installation ...... 8B-109
Forward-Sensor In spection ............................. 8B-110
Side-Sensor Removal and Installation ............ 8B-110
Side-Sensor Inspection ................................... 8B-111
Passenger Air Bag (Inflator) Module Repair
Harness Installation....................................... 8B-112
Air Bag (Inflator) Module and Seat Belt Pretensioner Disposal ................................... 8B-113
Deployed Air Bag (Inflator) Module and Activated Seat Belt Pretensioner Disposal.... 8B-124
Specifications .................. .................................8B-125
Tightening Torque Specifications .................... 8B-125
Special Tools and Equipmen t .........................8B-125
Use of Special Tools ....................................... 8B-125
Recommended Service Material ..................... 8B-127
Special Tool .................................................... 8B-127