2007 ISUZU KB P190 service

SUPPLEMENTAL RESTRAINT SYSTEM 9A-39
SRS Coil Assembly
Service Precautions
WARNING: SAFETY PRECAUTIONS MUST BE
FOLLOWED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE AIR
BAG ASSEMBLY SURFACE MAY CONTAIN
A
SMALL AMOUNT OF SODIUM HYDROXIDE, A BY–
PRODUCT OF THE DEPLOYMENT REACTION
THAT IS IRRITATING TO THE SKIN AND EYES.
MOST OF THE POWDER ON THE AIR BAG
ASSEMBLY IS HARMLESS. AS A PRECAUTION,
WEAR GLOVES AND SAFETY GLASSES WHEN
HANDLING A DEPLOYED AIR BAG ASSEMBLY,
AND WASH YOUR HANDS WITH MILD SOAP AND
WATER AFTERWARDS.
WARNING: WHEN CARRYING A LIVE AIR BAG
ASSEMBLY, MAKE SURE THE BAG AND TRIM
COVER ARE POINTED AWAY FROM YOU. NEVER
CARRY AN AIR BAG ASSEMBLY BY THE WIRES
OR CONNECTOR ON THE UNDERSIDE OF THE
MODULE. IN THE CASE OF AN ACCIDENTAL
DEPLOYMENT, THE BAG WILL THEN DEPLOY
WITH MINIMAL CHANCE OF INJURY. WHEN
PLACING ALIVE AIR BAG ASSEMBLY ON
A
BENCH OR OTHER SURFACE, ALWAYS FACE
THE BAG AND TRIM COVER UP, AWAY FROM THE
SURFACE. NEVER REST A STEERING COLUMN
ASSEMBLY ON THE STEERING WHEEL WITH THE
AIR BAG ASSEMBLY FACE DOWN AND COLUMN
VERTICAL. THIS IS NECESSARY SO THAT A FREE
SPACE IS PROVIDED TO ALLOW THE AIR BAG
ASSEMBLY TO EXPAND IN THE UNLIKELY EVENT
OF ACCIDENTAL DEPLOYMENT. OTHERWISE,
PERSONAL INJURY COULD RESULT.
NOTE: In the event deployment has occurred, inspect
the coil assembly wire for any signs of scorching,
melting or any other damage due to excessive heat. I
f
the coil has been damaged, replace it.

Removal
NOTE: The SRS coil is a part of the combination
switch assembly, which cannot be replaced separately.
Therefore, be sure not to remove the SRS coil from
the combination switch assembly.

Refer to the “Combination Switch” in the “Power-
Assisted Steering System” section.

Installation
Refer to the “Combination Switch” in the “Power-
Assisted Steering System” section.




BACK TO CHAPTER INDEX TO MODEL INDEXISUZU KB P190 2007

9A-40 SUPPLEMENTAL RESTRAINT SYSTEM
Steering Column
Service Precautions
WARNING: SAFETY PRECAUTIONS MUST BE
FOLLOWED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE AIR
BAG ASSEMBLY SURFACE MAY CONTAIN
A
SMALL AMOUNT OF SODIUM HYDROXIDE, A BY–
PRODUCT OF THE DEPLOYMENT REACTION
THAT IS IRRITATING TO THE SKIN AND EYES.
MOST OF THE POWDER ON THE AIR BAG
ASSEMBLY IS HARMLESS. AS A PRECAUTION,
WEAR GLOVES AND SAFETY GLASSES WHEN
HANDLING A DEPLOYED AIR BAG ASSEMBLY,
AND WASH YOUR HANDS WITH MILD SOAP AND
WATER AFTERWARDS.
WARNING: WHEN CARRYING A LIVE AIR BAG
ASSEMBLY, MAKE SURE THE BAG AND TRIM
COVER ARE POINTED AWAY FROM YOU. NEVER
CARRY AN AIR BAG ASSEMBLY BY THE WIRES
OR CONNECTOR ON THE UNDERSIDE OF THE
MODULE. IN THE CASE OF AN ACCIDENTAL
DEPLOYMENT, THE BAG WILL THEN DEPLOY
WITH MINIMAL CHANCE OF INJURY. WHEN
PLACING ALIVE AIR BAG ASSEMBLY ON
A
BENCH OR OTHER SURFACE, ALWAYS FACE
THE BAG AND TRIM COVER UP, AWAY FROM THE
SURFACE. NEVER REST A STEERING COLUMN
ASSEMBLY ON THE STEERING WHEEL WITH THE
AIR BAG ASSEMBLY FACE DOWN AND COLUMN
VERTICAL. THIS IS NECESSARY SO THAT A FREE
SPACE IS PROVIDED TO ALLOW THE AIR BAG
ASSEMBLY TO EXPAND IN THE UNLIKELY EVENT
OF ACCIDENTAL DEPLOYMENT. OTHERWISE,
PERSONAL INJURY COULD RESULT.
In the event deployment has occurred, inspect the coil
assembly wire for any signs of scorching, melting o
r
any other damage due to excessive heat. If the coil
has been damaged, replace it.

Removal
Refer to the “Steering Column” in the “Power-Assisted
Steering System” section.

Installation
Refer to the “Steering Column” in the “Power-Assisted
Steering System” section.



BACK TO CHAPTER INDEX
TO MODEL INDEXISUZU KB P190 2007

SUPPLEMENTAL RESTRAINT SYSTEM 9A-41
Passenger Air Bag Assembly
Service Precautions
WARNING: SAFETY PRECAUTIONS MUST BE
FOLLOWED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE AIR
BAG ASSEMBLY SURFACE MAY CONTAIN
A
SMALL AMOUNT OF SODIUM HYDROXIDE, A BY–
PRODUCT OF THE DEPLOYMENT REACTION
THAT IS IRRITATING TO THE SKIN AND EYES.
MOST OF THE POWDER ON THE AIR BAG
ASSEMBLY IS HARMLESS. AS A PRECAUTION,
WEAR GLOVES AND SAFETY GLASSES WHEN
HANDLING A DEPLOYED AIR BAG ASSEMBLY,
AND WASH YOUR HANDS WITH MILD SOAP AND
WATER AFTERWARDS.
WARNING: WHEN CARRYING A LIVE AIR BAG
ASSEMBLY, MAKE SURE THE BAG AND TRIM
COVER ARE POINTED AWAY FROM YOU. NEVER
CARRY AN AIR BAG ASSEMBLY BY THE WIRES
OR CONNECTOR ON THE UNDERSIDE OF THE
MODULE. IN THE CASE OF AN ACCIDENTAL
DEPLOYMENT, THE BAG WILL THEN DEPLOY
WITH MINIMAL CHANCE OF INJURY. WHEN
PLACING ALIVE AIR BAG ASSEMBLY ON
A
BENCH OR OTHER SURFACE, ALWAYS FACE
THE BAG AND TRIM COVER UP, AWAY FROM THE
SURFACE. NEVER REST A STEERING COLUMN
ASSEMBLY ON THE STEERING WHEEL WITH THE
AIR BAG ASSEMBLY FACE DOWN AND COLUMN
VERTICAL. THIS IS NECESSARY SO THAT A FREE
SPACE IS PROVIDED TO ALLOW THE AIR BAG
ASSEMBLY TO EXPAND IN THE UNLIKELY EVENT
OF ACCIDENTAL DEPLOYMENT. OTHERWISE,
PERSONAL INJURY COULD RESULT.
WARNING: IN THE EVENT DEPLOYMENT HAS
OCCURRED, INSPECT THE COIL ASSEMBLY
WIRE FOR ANY SIGNS OF SCORCHING, MELTING
OR ANY OTHER DAMAGE DUE TO EXCESSIVE
HEAT. IF THE COIL HAS BEEN DAMAGED,
REPLACE IT.

Removal
1. Disable the SRS. (Refer to “Disabling the SRS” in this section)
2. Remove the glove box.
3. Remove the glove box cover.

4. Remove the passenger air bag assembly fixing
bolts and nuts. Universal joint is used when
removing a nut.





RTW 79ASH001301
060R300044
5. Remove the passenger air bag assembly.
6. Disconnect the passenger air bag assembl
y
harness connector.


BACK TO CHAPTER INDEX TO MODEL INDEXISUZU KB P190 2007

SUPPLEMENTAL RESTRAINT SYSTEM 9A-43
Pretensioner Seat Belt (If so equipped)
Service Precaution
WARNING: WHEN PERFORMING SERVICE ON OR
AROUND THE PRETENSIONER SEAT BELT OR
THE PRETENSIONER SEAT BELT WIRING,
FOLLOW THE PROCEDURES LISTED BELOW TO
TEMPORARILY DISABLE THE PRETENSIONER
SEAT BELT.
FAILURE TO FOLLOW PROCEDURES COULD
RESULT IN POSSIBLE THE PRETENSIONER SEAT
BELT DEPLOYMENT, PERSONAL INJURY OR
OTHERWISE UNNEEDED THE PRETENSIONER
SEAT BELT REPAIR.
AS A PRECAUTION, WEAR GLOVES AND SAFETY
GLASSES WHEN PERFORMING THE
PRETENSIONER SEAT BELT. WHEN DEPLOY
A
LIVE PRETENSIONER SEAT BELT AT OUTSIDE
THE
VEHICLE, DEPLOYMENT HARNESS SHALL
REMAIN SHORTED AND NOT BE CONNECTED TO
A POWER SOURCE UNTIL THE PRETENSIONER
SEAT BELT IS TO BE DEPLOYED. THE
PRETENSIONER SEAT BELT WILL IMMEDIATELY
DEPLOY WHEN A POWER SOURCE IS
CONNECTED TO IT. CONNECTING THE
DEPLOYMENT HARNESS SHOULED ALWAYS BE
THE FINAL STEP IN THE PRETENSIONER SEAT
BELT DEPLOYMENT PROCEDURE. FAILURE TO
FOLLOW PROCEDURES IN THE ORDER LISTED
COULD RESULT IN PERSONAL INJURY.
Parts Location


RTW 49JSH000301
Legend
(1) Seat
(2) Bolt
(3) Pretensioner Harness
(4) Pretensioner

Removal
1. Turn ignition switch to “LOCK”, remove key.
2. Remove the foot rest located behind the seat.
3. Remove the cover on seat slide.
4. Disconnect the pretensioner connector at the base of the seat.
5. Remove four fixing bolts the seat slide and remove seat.
6. Remove the seat cover.
7. Remove the pretensioner seat belt assembly.

Installation
1. Install the pretensioner seat belt assembly.
2. Install the seat cover.
3. Install the seat on seat slide and four fixing bolts.
4. Connect the yellow pretensioner connector at the base of the seat.
5. Install the cover on seat slide.
6. Install the foot rest located behind the seat.



BACK TO CHAPTER INDEX TO MODEL INDEXISUZU KB P190 2007

RESTRAINT CONTROL SYSTEM 9A1-1

SECTION 9A1
RESTRAINT CONTROL SYSTEM
TABLE OF CONTENTS
PAGE
Service Precaution ............................................................................................................. ..........9A1- 2
Diagnosis In formation ......................................................................................................... ........9A1- 3
Diagnostic Procedures .......................................................................................................... ......9A1- 3
Diagnostic Codes ............................................................................................................... ..........9A1- 3
How To Read Trouble Codes ..................................................................................................... .9A1- 3
How To Clear Trouble Codes .................................................................................................... ..9A1- 3
Scan Tool Di agnostics .......................................................................................................... .......9A1- 3
Basic Knowledge Required ....................................................................................................... ..9A1- 4
Basic Electrical Circuits ..................................................................................................... .........9A1- 4
"Flash Code" Diagnostics ...................................................................................................... ....9A1- 4
DATA LIST (Tech2) .............................................................................................................. .........9A1- 5
Diagnostic Trouble Codes ....................................................................................................... ....9A1- 6
System Schematic .............................................................................................................. .........9A 1- 7
SRS Diagnostic System Check ...................................................................................................9 A1- 7
Chart A SRS control uni t Integrity Check...................................................................................9A1- 10
Chart B "SRS" Warning Lamp Comes "ON" Steady..................................................................9A1- 12
Chart C "SRS" Warning Lamp Does Not Come "ON" Steady ..................................................9A1-14
DTC B0015 (Flash Code 15) Passenger Air Ba g Squib Circuit High Resistance ...................9A1-17
DTC B0016 (Flash Code 16) Passenger Air Ba g Squib Circuit Low Resistance .....................9A1-20
DTC B0018 (Flash Code 18) Passenger Air Ba g Squib Circuit Short to GND.........................9A1-23
DTC B0019 (Flash Code 19) Passenger Air Bag Squib Circuit Short to Battery
Voltage ........................................................................................................................ ..................9A1- 26
DTC B0021 (Flash Code 21) Driver Air Ba g Squib Circuit High Resistance ............................9A1-28
DTC B0022 (Flash Code 22) Driver Air Ba g Squib Circuit Low Resistance.............................9A1-31
DTC B0025 (Flash Code 25) Driver Air Ba g Squib Circuit Short to GND ................................9A1-34
DTC B0026 (Flash Code 26) Driver Air Bag Squib Circuit Short to Battery
Voltage ........................................................................................................................ ..................9A1- 37


BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

9A1-2 RESTRAINT CONTROL SYSTEM


Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING A SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING A SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING, REFER
TO THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNECESSARY SRS
SYSTEM REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU/GM will call out those fasteners that require
a replacement after removal. ISUZU/GM will also
call out the fasteners that require thread lockers o
r
thread sealant. UNLESS OTHERWISE SPECIFIED,
do not use supplemental coatings (paints, greases,
or other corrosion inhibitors) on threaded fasteners
or fastener joint interfaces. Generally, such
coatings adversely affect the fastener torque and
the joint clamping force, and may damage the
fastener. When you install fasteners, use the
correct tightening sequence and specifications.
Following these instructions can help you avoid
damage to parts and systems.

DTC B0029 (Flash Code 29) Passenger pretensioner sqib Circuit High
Resistance ..................................................................................................................... ...............9A1-40
DTC B0031 (Flash Code 31) Passenger Pretensioner Squib Circuit Low
Resistance ..................................................................................................................... ...............9A1-43
DTC B0033 (Flash Code 33) Passenger Pretensi oner Squib Circuit Short to GND ................9A1-46
DTC B0034 (Flash Code 34) Passenger Pretensioner Squib Circuit Short to
Battery Voltage ................................................................................................................ .............9A1-49
DTC B0041 (Flash Code 41) Driver Pretension er Squib Circuit High Resistance...................9A1-51
DTC B0042 (Flash Code 42) Driver Pretensi oner Squib Circuit Low Resistance ...................9A1-54
DTC B0045 (Flash Code 45) Driver Pretensi oner Squib Circuit Short to GND ........................9A1-57
DTC B0046 (Flash Code 34) Driver Pretensioner Squib Circuit Short to Battery
Voltage ........................................................................................................................ ..................9A1-60
DTC B0051 (Flash Code 51) Air Bag Squi b Circuit Activated (Crash).....................................9A1-62
DTC B0052 (Flash Code 52) Pretensioner Squib Circuit Activated (Crash) ...........................9A1-64
DTC B0055 (Flash Code 55) Ve hicle Variant Missing ................................................................9A1-66
DTC B0061 (Flash Code 61) Warnin g Lamp Circuit Failure ......................................................9A1-68
DTC B0062 (Flash Code 62) Batt ery Voltage Too High ............................................................9A1-71
DTC B0063 (Flash Code 63) Batt ery Voltage Too Low .............................................................9A1-73
DTC B0071 (Flash Code 71) SRS Cont rol Unit Internal Fault....................................................9A1-75
BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

RESTRAINT CONTROL SYSTEM 9A1-3

Diagnostic Information
CAUTION: When fasteners are removed, always
reinstall them at the same location from which they
were removed. If a fastener needs to be replaced,
use the correct part number fastener for that
application. If the correct part number fastener is
not available, a fastener of equal size and strength
(or stronger) may be used. Fasteners that are not
reused, and those requiring thread locking
compound, will be called out. The correct torque
value must be used when installing fasteners that
require it. If the above conditions are not followed,
parts or system damage could result.

Diagnostic Procedures
WARNING: TO AVOID DEPLOYMENT WHEN
TROUBLESHOOTING THE SRS, 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.
The diagnostic procedures used in this section are
designed to aid in finding and repairing SRS problems.
Outlined below are the steps to find and repair SRS
problems quickly and effectively. Failure to carefull
y
follow these procedures may result in extended
diagnostic time, incorrect diagnosis and incorrect parts
replacement.
1. Perform The “SRS Diagnostic System Check”.
The “SRS Diagnostic System Check” should always be the starting point of any SRS diagnostics. The
“SRS Diagnostic System Check” checks for prope
r
“SRS” warning lamp operation and checks for SRS
trouble codes using both “Flash Code” and “Scan
Tool” Methods.
2. Refer To The Proper Diagnostic Chart As Directed By The “SRS Diagnostic System
Check”.
The “SRS Diagnostic System Check” will lead you to the correct chart to diagnose any SRS problems.
Bypassing these procedures may result in extended
diagnostic time, incorrect diagnosis and incorrect
parts replacement.

3. Repeat The “SRS Diagnostic System Check”
After Any Repair Or Diagnostic Procedures Has
Been Performed.
Performing the “SRS Diagnostic System Check” after all repairs or diagnostic procedures, will assure
that the repair has been made correctly and that no
other conditions exist.

Diagnostic Codes
The SRS control unit maintains a history record of all
diagnostic codes that have been detected since the
SRS codes were last cleared during service.
1. Active Codes - Faults that are presently detected in this ignition cycle. Active codes are stored in RAM
(Random Access Memory).
2. History Codes - All faults detected since the last time the history fault memory was cleared. History codes
are stored in the EEPROM. (Electronically Erasable
Programmable Read only Memory)

How To Read Trouble Codes
All codes (Active and history) can be read (or cleared)
by using a scan tool or equivalent.
If a PDT is not available, have the vehicle serviced by a
HOLDEN dealer.

How To Clear Trouble Codes
Trouble codes can only be cleared by using a Scan
Tool. If a “scan tool” is not available then inform the
owner of the stored codes and suggest that the codes
are cleared upon the next visit to a ISUZU/GM
dealership.

Scan Tool Diagnostics
A scan tool can be used to read current and history
codes and to clear all history codes after a repair is
complete. The scan tool must be updated to
communicate with the SRS through a replaceable
cartridge or a manufacturer's update before it can be
used for SRS diagnostics. To use the scan tool,
connect it to the DLC and turn the ignition switch “ON”.
Then follow the manufacturer's directions fo
r
communication with the SRS. The scan tool reads
serial data from the SRS control unit’s “Serial Data”
output (terminal 21) to the DLC (terminal 2).


BACK TO CHAPTER INDEX TO MODEL INDEX
ISUZU KB P190 2007

9A1-4 RESTRAINT CONTROL SYSTEM

Basic Knowledge Required
Before using this section of the Service Manual, some
basic knowledge is required. W ithout this knowledge,
you will have trouble using the diagnostic procedures in
this section. Use care to prevent any harm or unwanted
deployment. Read all cautions in the service manual
and on warning labels attached to SRS components.

Basic Electrical Circuits
You should understand the basic theory of electricity
including series and parallel circuits, and understand
the voltage drops across series resistors. You should
know the meaning of voltage (volts), current (amps),
and resistance (ohms). You should understand what
happens in a circuit with an open or a shorted wire. You
should be able to read and understand a wiring
diagram.

“Flash Code” Diagnostics
Flash code diagnostics can be used to read active
codes and to determine if history codes are present but
cannot be used to clear codes or read history codes.
Flash code diagnostics is enabled by grounding
terminal 4, shorting to terminal 13 of the DLC, with the
ignition switched “ON”. Grounding terminal 4 of the DLC
pulls the “Diagnostics Request” input (Terminal 1) of the
SRS control unit low and signals the SRS control unit to
enter the flash code diagnostic display mode.
060R300052

BACK TO CHAPTER INDEX TO MODEL INDEX
ISUZU KB P190 2007