light SUZUKI SWIFT 2005 2.G Service Workshop Manual
Page 992 of 1496
Downloaded from www.Manualslib.com manuals search engine 7B-44 Air Conditioning System: Automatic Type
3) Light over sunload sensor vertically with an incandescent lamp approximately 100 W apart from 
about 100 mm (3.94 in.).
NOTE
If sunload sensor is not lighted over with an 
incandescent lamp, DTC  B1504 is detected 
as current DTC even though there is not any 
malfunction.
 
4) Turn ignition switch to ON position.
5) Erase DTC according to instructions displayed on  SUZUKI scan tool.
NOTE
To know how to use SUZUKI scan tool, refer 
to operator’s manual for SUZUKI scan tool.
 
6) After completing the clearance, turn ignition switch to OFF position, and then di sconnect SUZUKI scan 
tool from DLC.
Not Using SUZUKI Scan Tool 1) Turn ignition switch to ON position.
2) Set temperature selector to 25  °C (77  °F). 3) Push AUTO switch (1) and 
MODE (air flow) selector 
(2) at the same time to  have history DTC displayed.
4) Push MODE (air flow) selector (2) and OFF switch  (3) at the same time while history DTC is displayed.
5) Check that “CL” (4) appears on display. “CL” means  that DTC has been cleared.
DTC TableS7RS0B7224005
CAUTION! 
Be sure to perform “Air Conditioning Sy stem Check” before starting diagnosis.
 
1
2
3
2
4
I5RS0A722008-01
DTC No. 
(displayed  on 
SUZUKI 
scan tool) DTC 
(indicated  on 
display of  HVAC 
control 
module) Priority of 
display 
(current  DTC) Priority 
of 
display 
(history  DTC) Diagnosis
“AUTO” 
indicator  lamp
 )  B1502 21 1 1 Inside air temperature sensor and/or its 
circuit malfunction Open
Flashed
22 2 2 Short
 )  B1503 31 3 3 Evaporator temperature sensor and/or its 
circuit malfunction Open
Flashed
32 4 4 Short
 )  B1504 41 21 — Sunload sensor and/or its circuit 
malfunction Open —
42 5 5 Short Flashed
 )  B1511 61 6 6 Temperature control actuator (position 
sensor) and/or its circuit malfunction Open
Flashed
62 7 7 Short
 )  B1512 71 8 8 Air flow control actuator (position sensor) 
and/or its circuit malfunction Open
Flashed
72 9 9 Short
 )  B1513 63 10 10 Temperature control actuator and/or its circuit malfunction Flashed
 )  B1514 73 11 11 Air flow control actuator and/or its circuit malfunction Flashed
 )  B1541 E1 12 — HVAC control module back-up power supply malfunction —
 )  B1546 d5 22 — A/C refrigerant pressure malfunction —
 )  B1551 91 13 12
Serial communication circuit malfunction Open
Flashed
92 14 13 Short
 )  B1552 94 15 14 Serial communication signal malfunction Flashed
 )  B1553 A4 16 15 CAN communication signal malfunction Flashed
 )  B1557 b4 19 16 Vehicle speed sensor signal malfunction —
 )  B1561 54 17 17 Engine coolant temperature sensor signal malfunction Flashed  
Page 993 of 1496
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NOTE
When no current DTC is detected, all contents displayed on display (1) of HVAC control module and 
defroster indicator (2) flash at the same time.
 
Fail-Safe TableS7RS0B7224006
When any of the following malfunctions (DTCs) is detected, fail-safe mode is activated.
However, when HVAC control module detects normal ope ration of A/C system, fail-safe mode is cancelled.
 )
 B1562 14 18 18 Outside air temperatur e sensor signal malfunction Flashed
 )  B1563 d4 20 19 A/C refrigerant pressure sensor signal malfunction —
— See NOTE 
below 
(current  DTC) ——Normal —
00 (history  DTC)
DTC No. 
(displayed  on 
SUZUKI 
scan tool) DTC 
(indicated  on 
display of  HVAC 
control 
module) Priority of 
display 
(current  DTC) Priority 
of 
display 
(history  DTC) Diagnosis
“AUTO” 
indicator  lamp
1
2
I5RS0A722009-01
DTC No.
Trouble Area Fail-Safe Operation
 )
B1502 Inside air temperature sensor and/
or its circuit HVAC control module controls actu
ators assuming that inside air 
temperature is 25 ° C (77 °F).
 )
B1503 A/C evaporator temperature sensor 
and its circuit • HVAC control module turn
s off A/C switch signal.
• HVAC control module controls actu ators assuming that evaporator 
temperature is 0 ° C (32 °F).
 )
B1504 Sunload sensor and/or its circuit HVAC control module controls actu
ators assuming that amount of 
sunlight is 0 W/m
2.
 ) B1551 Serial communication circuit
HVAC control module controls actuators assuming that outside air 
temperature is 20 ° C (68 °F), engine coolant temperature is 80  °C 
(176  °F), and vehicle speed is 40 km/h (25 mph).
 )
B1552 Serial communication circuit
 )
B1553 CAN communication circuit
 )
B1557 Vehicle speed sensor and/or its 
circuit HVAC control module controls act
uators assuming that vehicle speed 
is 40 km/h (25 mph).
 )
B1561 Engine coolant temperature sensor 
and/or its circuit HVAC control module controls act
uators assuming that engine coolant 
temperature is 80 ° C (176 °F).
 )
B1562 Outside air temperature sensor 
and/or its circuit HVAC control module controls actu
ators assuming that outside air 
temperature is 20 ° C (68 °F).  
Page 994 of 1496
Downloaded from www.Manualslib.com manuals search engine 7B-46 Air Conditioning System: Automatic Type
Scan Tool DataS7RS0B7224007
As the data values given in the following are standard values estimated on the basis of values obtained from the 
normally operation vehicles by using a scan tool, use them as reference values. Even when the vehicles are in good 
condition, there may be cases where the checked values do not fall within each specifies data range. Therefore, 
judgement as abnormal should not be ma de by checking with these data alone.
Scan Tool Data Condition Normal Condition / Reference 
Va l u e
 )  TEMP CONT 
SWITCH Each reference value is relative to the position of 
temperature selector of HVAC control module. Max Cool, 18.5 
°C (65 ° F), 19 °C (66 
° C) – 31  °C (88  °F), 31.5  °C (89  °F), 
Max Hot
 )  CABIN 
TEMPERATURE Reference value is relative to in-car temperature. –6.5 
°C – 57.25 ° C 
(20.3  °F – 135.05  °F)
 )  OUTSIDE AIR TEMP Reference value is relative to outside air 
temperature. –23.3 
°C – 65.95  °C 
(–9.94  °F – 150.71  °F)
 )  EVAPORATOR 
TEMP Reference value is relative to temperature of 
evaporator. –29.7 
°C – 59.55  °C 
(–21.46  °F – 139.19  °F)
 )  COOLANT TEMP At specified id le speed after warming up. 80 °C – 100  °C (176 ° F – 212 ° F)
 )  SUN LOAD Reference value depends on the situation. 0 W/m
2 – 4447.8 W/m2
 )MODE CONT 
SWITCH Each reference value is relative to the position of air 
flow selector of HVAC control module.
AUTO, FACE, B/L, FOOT, D/F, DER
 )  FAN CONT SWITCH Each reference value is relative to the position of 
blower speed selector of HVAC control module. AUTO, OFF, 1st, 2nd – 7th, 8th
 )  FAN DESIRED VOLT Reference value is relative to the position of blower 
speed selector of HVAC control module. 0 – 16.0 V
 )  AIR MIX POS SEN Reference value is relative to the position of 
temperature selector of HVAC control module. about 2.0 V (Max Hot)
about 4.0 V (Max Cool)
 ) MODE POS SENSOR Reference value is relative to the position of air flow 
selector of HVAC control module. about 1.6 V (DEF)
about 4.0 V (VENT)
 )  A/C CONT SIG A/C system is ON. ON
A/C system is OFF. OFF
 )  BLOWER LOAD SIG Position of blower speed selector is 1st position or 
more.
ON
Position of blower speed selector is OFF position. OFF
 )  AIR INTAKE MODE Fresh air (FRE) mode is activated. FRE
Recirculation air (REC) mode is activated. REC
AUTO mode is activated. AUTO
 )  REFRIGERANT 
PRESSURE Engine running. A/C ON (A/C is operating) 
at ambient temperature: 
30 
°C (86  °F) 1470 – 1770 kPa For more details, 
refer to pressure  of high pressure 
gauge under “A/C System  Performance Inspection”
A/C OFF (A/C is not 
operating) at ambient 
temperature: 30  °C (86 
° F) and engine coolant 
temperature: 90  ° – 100 
° C 600 – 1000 kPa After longer than 10 
min from A/C switch turned off
 )  A/C COMP CLUTCH Engine running. A/C switch and blower 
motor switch turned ON
ON
A/C switch and/or blower 
motor switch turned OFF OFF
 )  DFR INDICATOR Defroster indicator 
lamp is lighted. ON
Defroster indicator la mp is not lighted. OFF
 )  VEHICLE SPEED At stop. OFF
0 km/h (0 mph)  
Page 995 of 1496
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Scan Tool Data Definitions
TEMP CONT SWITCH (TEMPERATURE SELECTOR):   Position of temperature control 
selector of HVAC control module
CABIN TEMPERATURE:   In-car temperature detected 
by inside air temperature sensor installed in HVAC 
control module
OUTSIDE AIR TEMP (OUTSIDE AIR  TEMPERATURE):   Outside air temperature 
detected by outside air temperature sensor installed 
in front bumper member
EVAPORATOR TEMP (EVAPORATOR  TEMPERATURE):   Temperature of air passed 
through evaporator
COOLANT TEMP (ENGINE COOLANT  TEMPERATURE):   Engine coolant temperature 
detected by engine coolant temperature sensor
SUN LOAD:   Amount of sunlight detected by sunload 
sensor installed on the driver side on the dashboard
MODE CONT SWITCH (MODE (AIR FLOW)  SELECTOR):   Position of air flow selector of HVAC 
control module
FAN CONT SWITCH (BLOWER SPEED SELECTOR):   Position of blower speed selector of HVAC control 
module
FAN DESIRED VOLT:   Voltage for blower motor AIR MIX POS SEN (TEMPERATURE CONTROL 
ACTUATOR POSITI ON SENSOR):  Input signal 
from position sensor in temperature control actuator
MODE POS SENSOR (AIR FLOW CONTROL  ACTUATOR POSITI ON SENSOR):  Input signal 
from position sensor in air flow control actuator
A/C CONT SIG (A/C SWITCH SIGNAL, ON or OFF):   State of A/C switch
BLOWER LOAD SIG (BLO WER FAN LOAD SIGNAL, 
ON or OFF):   ON: Position of blower speed selector 
is 1st position or more / OFF: Position of blower 
speed selector is OFF position.
AIR INTAKE MODE (AUTO, FRE or REC):   State of air 
intake mode
REFRIGERANT PRESSURE (A/C REFRIGERANT  ABSOLUTE PRESSURE):   This parameter 
indicates A/C refrigerant absolute pressure 
calculated by ECM
A/C COMP CLUTCH (A/C COMPRESSOR MAGNET  CLUTCH, ON or OFF):   This parameter indicates 
the state of the A/C switch
DFR INDICATOR (DEFROSTER INDICATOR LAMP,  ON or OFF):   State of defroster indicator lamp
VEHICLE SPEED:   It is computed based on pulse 
signals from vehicle speed sensor
Air Conditioning System CheckS7RS0B7224008
Step Action YesNo
1 Customer complaint analysis
1) Perform   )”Customer complaint analysis”.
Was customer complaint analysis performed? Go to Step 2.
Perform customer 
complaint analysis.
2 Visual inspection
1) Perform   )“Visual inspection”.
Is there any faulty condition? Repair or replace 
malfunction part.
Go to Step 3.
3 DTC check
1) Perform   )“DTC check”.
Is there any DTC code? Go to Step 4.
Go to Step 5.
4 Troubleshooting malfunction
1) Perform   ) “Troubleshooting malfunction”.
Is there any faulty condition? Repair or replace 
malfunction part, and go 
to Step 7.
Go to Step 5.
5 Perform A/C system symptom diagnosis
1) Inspect and repair referri ng to “A/C System Symptom 
Diagnosis”.
Is there any faulty condition? Repair or replace 
malfunction part, and go 
to Step 7.
Go to Step 6.
6 Check for intermittent problem
1) Check for intermittent troubles referring to “Intermittent 
and Poor Connection Inspection in Section 00”.
Is there any faulty condition? Repair or replace 
malfunction part, and go 
to Step 7.
Go to Step 7.
7 Final confirmation test
1) Perform   ) “Final confirmation test”.
Is there any malfunction code? Go to Step 4.
End.  
Page 1016 of 1496
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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  
Page 1024 of 1496
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Actuator Linkage InspectionS7RS0B7226010
• Check if each actuator linkage operates smoothly.
• Check actuator rod for bend.
• Check each actuator linkage for breakage.
• Make sure if there is not any obstruction in operating range of actuator linkage.
If any malfunction is found, repair or replace faulty 
part(s).
Blower Motor Controller Removal and 
Installation
S7RS0B7226011
Refer to “Blower Motor Resistor Removal and 
Installation in Section 7A”.
Blower Motor Controller InspectionS7RS0B7226012
1) Check internal circuit of controller for resistance as  follows.
a) Measure resistance between “1” terminal and “2”  terminal of blower motor controller.
Blower motor cont roller resistance
“1” – “2”: approximately 10 k Ω at 25 °C (77 °F)
If resistance does not meet above specification, 
replace blower motor controller.
b) Using ohmmeter, connect its positive terminal to  “3” terminal of blower motor controller and 
negative terminal to “1” terminal of blower motor 
controller and check that there is no continuity.
2) Check controller for operation as follows. a) Using service wire, connect battery positive  terminal to “3” terminal of blower motor controller 
and battery negative terminal to “1” terminal of 
blower motor controller.
b) Using bulb (3.4 W) (5) and service wire, connect  battery positive terminal to “3” terminal of blower 
motor controller as shown figure.
c) Arrange 3 new 1.5 V batteries (6) in series  (check that total voltage is 4.5 – 5.0 V) and 
connect its positive term inal to “2” terminal of 
blower motor controller and negative terminal to 
“1” terminal of blower motor controller.
Then, check that bulb lights. If bulb does not light 
under the above conditions, replace blower 
motor controller.
3
1
2
4
2
1
3
4
5
6I5RS0A722026-01  
Page 1025 of 1496
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HVAC Control Module Removal and InstallationS7RS0B7226013
Removal1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air  Bag System in Section 8B”.
3) Remove passenger air bag module from instrument  panel referring to “Passenger Air Bag (Inflator) 
Module Removal and Installation in Section 8B”.
4) Remove radio assembly from instrument panel  referring to “Rear Speaker Removal and Installation 
in Section 9C”.
5) Remove two connectors fr om HVAC control module.
6) Remove HVAC control modu le (1) from instrument 
panel.
NOTE
Be careful not to damage HVAC control 
module and instrument panel by using rag.
 
Installation
Reverse removal procedure noting the following 
instructions.
Enable air bag system referring to “Enabling Air Bag 
System in Section 8B”.
Sunload Sensor Removal and InstallationS7RS0B7226014
Removal
1) Disconnect negative (–) cable at battery.
2) Remove combination meter referring to  “Combination Meter Removal and Installation in 
Section 9C”.
3) Remove sunload sensor (1) from instrument panel  by depressing tab and pushing sensor upward from 
underneath.
4) Disconnect sunload sensor connector (2). Installation
Reverse removal procedure.
Sunload Sensor InspectionS7RS0B7226015
1) Light over sunload sensor vertically with an 
incandescent lamp of approximately 100 W. The 
distance between sunload sensor and lamp should 
be approximately 100 mm (3.94 in.).
2) Measure voltage between terminals of sunload  sensor as shown.
If check result is not satisfactory, replace sunload 
sensor with new one.
Sunload sensor voltage specification
0.4 V or more
Outside Air Temperature Sensor Removal and 
Installation
S7RS0B7226016
Refer to “Instrument Panel Re moval and Installation in 
Section 9C”.
Outside Air Temperature Sensor InspectionS7RS0B7226017
Refer to “Information Display (Clock) Removal and 
Installation in Section 9C”.
1
I5RS0A722030-01
1
2
I5RS0A722027-01
I4RH01722036-01  
Page 1033 of 1496
Downloaded from www.Manualslib.com manuals search engine Seat Belts:  8A-2
Seat Belt with ELR
The seat belt with emergency locking retractor (ELR) is 
designed so that it locks immediately (to prevent the 
webbing from being pulled out of the retractor any 
further) when any of the following items is detected as 
exceeding each set value;
• Speed at which the webbing is pulled out of the retractor.
• Acceleration or deceleration of the vehicle speed.
• Inclination.
Seat Belt with A-ELR
The automatic and emergency locking retractor (A-ELR) 
works as an Emergency Locking Retractor (ELR) till its 
webbing is pulled all the way out and then on as an 
Automatic Locking Retractor (ALR ) till it is retracted fully.
ALR: Automatically locks when  the webbing is pulled out 
from the retractor and allowed to retract even a little. 
Then the webbing can not be pulled out any further, 
unless it is wound all the way back into the retractor, 
which releases the lock and  allows the webbing to be 
pulled out.
Seat Belt with ELR and Pretensioner
The seat belt with ELR and a pretensioner has a 
pretensioner mechanism whic h operates in linkage with 
the air bag in addition to the described ELR.
The pretensioner is incorporated in retractor assembly 
and controlled by SDM as one of air bag system 
components. It will be activated at the same time as the 
driver and passenger air bag module when an impact at 
the front of vehicle exceeds the specified value.
When servicing seat belt (retractor assembly) with 
pretensioner, be sure to observe all WARNINGS and 
CAUTIONS and “Precautions on Service and Diagnosis 
of Air Bag System in Section 8B”. CAUTION! 
Do not reuse the seat belt pretensioner 
(retractor assembly) that has activated. 
Replace it with a new seat belt assembly and 
buckle together as a set. For checking 
procedure of its activation, refer to “Repair 
and Inspection Required after Accident in 
Section 8B”.
 
Seat Belt Remainder
When driver’s seat belt is unfastened (under the 
following conditions), seat belt reminder light and 
warning buzzer inform that driver’s seat belt is 
unfastened. Seat belt reminder light located in 
combination meter and warning buzzer located inside 
BCM operate as follows:
• Seat belt reminder light comes on when driver’s seat  belt is unfastened while igni tion key switch is at ON 
position.
• If vehicle speed exceeds 15 km/h with seat belt  unfastened, warning buzzer operates for 
approximately 95 seconds and seat belt reminder light 
flashes synchronously with buzzer. When warning 
buzzer stops operating, seat belt reminder light is 
turned on.
• If driver’s seat belt state is changed from “fastened” to  “unfastened” while vehicle speed is above 15 km/h, 
warning buzzer operates for approximately 95 
seconds and seat belt reminder light flashes 
synchronously with buzzer. When warning buzzer 
stops operating, seat belt reminder light is turned on.
Diagnostic Information and Procedures
Repair and Inspection Required after AccidentS7RS0B8104001
After an accident, whether the seat belt pretensioner has  been activated or not, be sure to perform checks and repairs 
described on “Repair and Inspection Required after Accident in Section 8B”.  
Page 1045 of 1496
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  
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.