SUPPLEMENTAL RESTRAINT SYSTEM9J–43
How to Disconnect the horn terminal
1. Lift the terminal lock plate from upper portion of
connector with a minitenes screw driver (-) and
release connector terminal lock.
827RX045
Legend
(1) Minitenes screw driver (-)
(2) Connector lock knob
2. Pull out the terminal of lead wire coming to connector
NO.12 while lifting the lock part with a minitenes
screw driver (-).
827RX046
Legend
(1) Lock
(2) Minitenes screw driver (-)
(3) Terminal
How to Connect Horn Terminal
1. Insert horn terminal from behind black connector
NO.12 until connector lock works.
827RX047
Legend
(1) Terminal
(2) Connector lock knob
2. Push terminal lock plate into the connector for a duble
lock.
827RX048
SUPPLEMENTAL RESTRAINT SYSTEM 9J–46
NOTE: SRS coil is a part of combination switch
assembly, which cannot be replaced separately.
Therefore, be sure not to remove the SRS coil from the
combination switch assembly.
15. Remove the snap ring.
16. Remove the cushion rubber.
17. Disconnect shift lock cable (A/T only).
18. Disconnect the starter switch harness connector
located base of steering column.
19. Remove steering lock cylinder assembly.
20. Apply a setting mark across the universal joint and
steering shaft to reassemble the parts in their original
position.
431RS013
21. Remove steering column assembly.
Installation
1. Install the steering column assembly and align the
setting marks on the universal joint and steering shaft
made during removal.
431RS013
2. Tighten the steering column fixing bolts (dash panel
side) to the specified torque.
Torque: 19 Nꞏm (1.9 Kgꞏm/14 Ib ft)
3. Tighten the steering column fixing bolts (Pedal
bracket) to the specified torque.
Torque: 17 Nꞏm (1.7 Kgꞏm/13 Ib ft)
4. Tighten the universal joint to the specified torque.
Torque: 25 Nꞏm (2.6 Kgꞏm/18 Ib ft)
5. Install steering lock cylinder assembly.
6. Connect shift lock cable (For A/T)
7. Install cushion rubber.
8. Install snap ring.
9. Install the combination switch assembly with SRS
coil.
10. Connect the wiring harness connector located on the
base of steering column.
11. Turn the SRS coil counterclockwise to full, return
about 3 turns and align the neutral mark (1).
CAUTION: W h e n t u r n i n g t h e S R S c o i l
counterclockwise to full, stop turning if resistance is
felt. Forced further turning may damage to the cable
in the SRS coil.
826RW014
SUPPLEMENTAL RESTRAINT SYSTEM9J–49
10. Install glove box cover.
11. Install glove box assembly with lid.
12. Install ECM and SDM cover.
13. Install rear console assembly and connect harness
connector.14. Install front console assembly.
15. Install gear control knob.
16. Enable the SRS (Refer to “Enabling the SRS” in this
section).
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
760RW028
Legend
(1) Seat
(2) Pretensioner Cover
(3) Bolt
(4) Pretensioner Harness
(5) 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 2-pin connector at the base of the
seat.
5. Remove four fixing bolts the seat slide and remove
seat.
6. Remove the pretensioner seat belt cover.
7. Remove the pretensioner seat belt assembly.
Installation
1. Install the pretensioner seat belt assembly.
2. Install the pretensioner seat belt cover.
3. Install the seat on seat slide and four fixing bolts.
4. Connect the yellow 2-pin connector at the base of the
seat.
5. Install the cover on seat slide.
6. Install the foot rest located behind the seat.
9J1–1
RESTRAINT CONTROL SYSTEM
RESTRAINT CONTROL SYSTEM
CONTENTS
Service Precaution 9J1–1. . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information 9J1–2. . . . . . . . . . . . . . . . . . .
System Schematic 9J1–4. . . . . . . . . . . . . . . . . . . . . .
SRS Diagnostic System Check 9J1–4. . . . . . . . . . . .
Chart A SDM Integrity Check 9J1–6. . . . . . . . . . . . .
Chart B “AIR BAG” Warning Lamp
Comes “ON” Steady 9J1–8. . . . . . . . . . . . . . . . . . . .
Chart C “AIR BAG” Warning Lamp
Does Not Come “ON” Steady 9J1–10. . . . . . . . . . . . .
DTC 15 Passenger Deployment Loop
Resistance High 9J1–13. . . . . . . . . . . . . . . . . . . . . . . .
DTC 16 Passenger Deployment loop
Resistance Low 9J1–15. . . . . . . . . . . . . . . . . . . . . . . .
DTC 17 Passenger Deployment Loop
Open 9J1–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 18 Passenger Deployment Loop
Short To Ground 9J1–19. . . . . . . . . . . . . . . . . . . . . . . .
DTC 19 Passenger Deployment Loop
Short To B+ 9J1–21. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 21 Driver Deployment Loop
Resistance High 9J1–23. . . . . . . . . . . . . . . . . . . . . . . .
DTC 22 Driver Deployment Loop
Resistance Low 9J1–26. . . . . . . . . . . . . . . . . . . . . . . .
DTC 24 Driver Deployment Loop
Short To Ground 9J1–29. . . . . . . . . . . . . . . . . . . . . . . .
DTC 25 Driver Deployment Loop
Short To B+ 9J1–31. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 26 Driver Deployment Loop Open 9J1–33. . . . DTC 51 Air Bag Deployment Event
Commanded 9J1–35. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 53 Deployment Commanded With
Deployment Loop Fault Or Energy
Reserves Out Of Range 9J1–37. . . . . . . . . . . . . . . . .
DTC 61 Warning Lamp Circuit Failure 9J1–39. . . . .
DTC 71 Internal SDM Fault 9J1–41. . . . . . . . . . . . . .
DTC 29 Passenger Pretensioner Loop
Short To Ground 9J1–43. . . . . . . . . . . . . . . . . . . . . . . .
DTC 31 Passenger Pretensioner Loop
Resistance High 9J1–45. . . . . . . . . . . . . . . . . . . . . . . .
DTC 32 Passenger Pretensioner loop
Resistance Low 9J1–47. . . . . . . . . . . . . . . . . . . . . . . .
DTC 33 Passenger Pretensioner Loop
Short To Voltage 9J1–49. . . . . . . . . . . . . . . . . . . . . . . .
DTC 34 Passenger Pretensioner Loop
Open 9J1–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 41 Driver Pretensioner Loop
Resistance High 9J1–53. . . . . . . . . . . . . . . . . . . . . . . .
DTC 42 Driver Pretensioner Loop
Resistance Low 9J1–55. . . . . . . . . . . . . . . . . . . . . . . .
DTC 44 Driver Pretensioner Loop
Open 9J1–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC 45 Driver Pretensioner Loop
Short To Ground 9J1–59. . . . . . . . . . . . . . . . . . . . . . . .
DTC 46 Driver Pretensioner Loop
Short To Voltage 9J1–61. . . . . . . . . . . . . . . . . . . . . . . .
DTC 52 Pretensioner Deployment
Event Commanded 9J1–63. . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING 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 UNNEEDED 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 will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or 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.
RESTRAINT CONTROL SYSTEM 9J1–2
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 carefully
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 proper
“AIR BAG” 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 Have
Been Performed.
Preforming the “SRS Diagnostic System Check” after
all repair or diagnostic procedures will assure that the
repair has been made correctly and that no other
conditions exist.
Diagnostic Codes
The Sensing and Diagnostic Module (SDM) maintains a
history record of all diagnostic codes that have beendetected since the SRS codes were last cleared during
service.
1. Active Codes — Faults that are presently detected
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 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
ISUZU 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 an Isuzu 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 memory card or a manufacturer’s update
before it can be used for SRS diagnostics. To use the
scan tool, connect it to the DLC connector and turn the
ignition switch “ON”. Then follow the manufacturer’s
directions for communication with the SRS. The scan tool
reads serial data from the SDM “Serial Data” output
(terminal 24) to the DLC connector (terminal 9).
Basic Knowledge Required
Before using this section of the Service Manual, there is
some basic knowledge which will be required. Without
this knowledge, you will have trouble using the diagnostic
procedures in this section. Use care to prevent 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 by terminal 4
shorting to terminal 13 of the DLC connector with the
ignition switch “ON”. Grounding terminal 4 of the DLC
connector pulls the “Diagnostics Request” input (Terminal
1) of the SDM low and signals the SDM to enter the flash
code diagnostic display mode.
10A–1
CRUISE CONTROL SYSTEM
CONTROL SYSTEM
CRUISE CONTROL SYSTEM
CONTENTS
Service Precaution 10A–1. . . . . . . . . . . . . . . . . . . . . .
General Description 10A–1. . . . . . . . . . . . . . . . . . . . .
Diagnosis 10A–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Switch 10A–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 10A–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment 10A–3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Switch 10A–3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 10A–3. . . . . . . . . . . . . . .
Adjustment 10A–3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch 10A–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 10A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control Main Switch 10A–5. . . . . . . . . . . . . . . Removal 10A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control Switch (Combination Switch) 10A–5
Removal and Installation 10A–5. . . . . . . . . . . . . . .
Cruise Control Unit 10A–6. . . . . . . . . . . . . . . . . . . . . .
Removal 10A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Actuator 10A–7. . . . . . . . . . . . . . . . . . . . . . . . .
Actuator Cable Diagram (LHD) 10A–7. . . . . . . . . .
Actuator Cable Diagram (RHD) 10A–7. . . . . . . . . .
Removal 10A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Switch 10A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 10A–8. . . . . . . . . . . . . . .
Service Precaution
WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING 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 UNNEEDED 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 will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or 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.
General Description
The cruise control keeps the vehicle running at a fixed
speed until a signal canceling this fixed speed is received .
When the main switch “AUTO CRUISE” is turned on with
the vehicle in the running mode, the battery voltage is
applied to the control unit. When a signal from the control
switch is input to the control unit while the vehicle is in this
state, the cruise control actuator is activated to operate
the system. Also, while the system is operating, the
“AUTO CRUISE” indicator light in the meter assembly
lights up.
1. SET/COAST Switch Function
1.Set Function: When the SET/COAST switch is
pressed and released with the main switch on, the
speed at which the vehicle is running at that moment
is stored in the memory, and the vehicle automatically
runs at the stored speed.
2.Coast-down Function: When the SET/COAST
switch is kept on while the vehicle in running, the
vehicle decelerates during that time. The speed at
which vehicle is running when the control switch is
turned off is stored in the memory, and the vehicle
automatically returns to the stored speed.
3.Tap-down Function: When the SET/COAST switch
is turned on and off instantaneously while the vehicle
is running, the vehicle decelerates a mile for each
on/off operation. The vehicle speed at which the
vehicle was running when the SET/COAST was
turned off last is stored in the memory, and the vehicle
automatically returns to this stored speed.
10A–2
CRUISE CONTROL SYSTEM
2. RESUME/ACCEL Switch Function
1.Resume Function: When the RESUME/ACCEL
switch is turned on/off after the system is temporarily
deactivated by pressing the brake or clutch pedal
while the vehicle is running, the vehicle resumes the
speed stored before the system was released, and
the vehicle automatically runs at the stored speed .
2.Accelerate Function: When the RESUME/ACCEL
switch is kept on after the system is released
completely, the vehicle accelerates its speed during
t h a t t i m e . T h e v e h i c l e s p e e d a t w h i c h t h e v e h i c l e w a s
running when the switch was turned off is stored in the
memory, and the vehicle automatically returns to this
speed.
3.Tap-up Function: When the RESUME/ACCEL
switch is turned on and off instantaneously while the
vehicle is running, the vehicle decelerates a mile for
each on/off operation. The vehicle speed at which the
vehicle was running when the switch was turned off
last is stored in the memory, and the vehicle
automatically returns to this stored speed.
3. CANCEL Function
1.Temporary Cancellation:
When the brake pedal is pressed.
When the clutch pedal is pressed. (M/T)
When the select lever is shifted to any position other
than “D”, “3”, “2” or “L”. (A/T)
When the cancel switch is operated.
When the vehicle speed exceeds about 20 km/h
over the vehicle speed stored in the memory.
Turning the RESUME/ACCEL switch will return the
vehicle to the speed stored in the cruise control
memory.
2.Complete Cancellation:
When the starter switch or the main switch is turned
off.
When the fail-safe function is activated.
When the vehicle speed is about 38.5 km/h.
Diagnosis
Refer to the Cruise Control System Diagnosis in Wiring
System section.
Brake Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the brake switch (1).
Disconnect the connector.
Loosen the lock nuts of the switch.
Remove the switch by turning it.
310RS004
Installation
To install, follow the removal steps in the reverse order,
noting the following points.
1. Check to see if the brake pedal has been returned by
the return spring to the specified position.2. Turn the switch clockwise until the tip of the threaded
portion of the brake switch contacts the pedal arm.
3. Turn the switch counterclockwise until the space
between the tip of the threaded portion and the pedal
arm is 0.5 to 1.0 mm (0.02-0.04 in.) as shown in the
figure.
310RS003
10A–3
CRUISE CONTROL SYSTEM
Adjustment
1. Check to be sure that the brake pedal (3) has been
completely returned by the return spring.
2. Disconnect the switch connector.
3. Loosen the lock nut (1) of the switch (2).
4. Turn the switch clockwise until the tip of screw portion
of the brake pedal hits the pedal arm.
5. Turn the switch counterclockwise until the clearance
between the tip of the screw portion and the pedal arm
becomes 0.5 to 1.0 mm (0.02-0.04 in).
6. Tighten the lock nut.
7. Connect the switch connector.
310RW006
Clutch Switch
Removal and Installation
Refer to the Clutch Control removal and installation steps
in Clutch section.
Adjustment
1. Check to be sure that the clutch pedal (1) has been
completely returned by the return spring.
2. Disconnect the switch connector.
3. Loosen the lock nut (2) of the switch (3).
4. Push the switch by hand until the push rod cannot be
seen from the tip portion of the switch.
5. Give the switch one reverse rotation.
6. Tighten the lock nut.
7. Connect the switch connector.
203RW002