Cruise Control – HFV6 Page 8C–24
3.4 Clutch Pedal Switch (Manual Only)
Remove
1 Disconnect the electrical connector (1) from the clutch
switch (2).
2 Loosen the lock nut (3) and remove the clutch switch from the pedal bracket.
Figure 8C – 13
Test
1 Using a multimeter set to measure ohms, probe the pins (1) of the switch assembly.
2 In the neutral position (plunger extended) there should be an open circuit across the switch.
3 In the active position (plunger extended) there should be a closed circuit across the switch.
4 Replace the switch as per the following reinstall procedure if the tests prove the switch to be faulty.
5 If the test proves the switch to be serviceable, reinstall it as per the following procedure.
Figure 8C – 14
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-1
SECTION 9A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
TABLE OF CONTENTS
PAGE
Service Precaution ....................................................................................................... 9A- 4
General Description...................................................................................................... 9A- 4 Restraint Devices ..................................................................................................... 9A- 4
System Description .................................................................................................. 9A- 5
Circuit Diagram ............................................................................................................. 9A- 6
SRS Component And Wiring Location View .............................................................. 9A- 10
Component Description ............................................................................................... 9A- 14 SRS Control Unit ...................................................................................................... 9A- 14
"SRS" Warning Lamp .............................................................................................. 9A- 14
SRS Coil Assembly .................................................................................................. 9A- 15
Air Bag Assemblies.................................................................................................. 9A- 15
Steering Column ...................................................................................................... 9A- 16
Knee Bolster ............................................................................................................. 9A- 16
Definitions .................................................................................................................... . 9A- 16
Diagnosis...................................................................................................................... . 9A- 18
Diagnostic Trouble Codes ....................................................................................... 9A- 18
Scan Tool Diagnostics............................................................................................. 9A- 18
Use Of Special Tools ............................................................................................... 9A- 18
SRS Connec tor Body Face Vie ws ............................................................................. ..9 A- 19
Repairs And Inspec tions Required After A n A ccident ............................................ ..9 A- 20
Accident With Deployment-Component Replacement And Inspections ............. 9A- 20
Accident With or Without Deployment-Component Inspection ........................... 9A- 20
SRS Control Unit Replacement Guidelines ........................................................... 9A- 20
Wiring Damage ......................................................................................................... 9A- 20
SRS Connector (Plastic Body And Terminal Metal Pin) Damage ......................... 9A- 20
SRS Wire Pigtail Damage ........................................................................................ 9A- 20
PAGE 1 OF 3
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9A-2 SUPPLEMENTAL RESTRAINT SYSTEM
PAGE
On-Vehicle Service ....................................................................................................... 9A- 21
Service Precaution ................................................................................................... 9A- 21
Disabling The SRS ................................................................................................... 9A- 21
Enabling The SRS .................................................................................................... 9A- 21
Handling / Installation / Diagnosis .......................................................................... 9A- 21
Air Bag Assembly Handling / Shipping / Scrapping .................................................. 9A- 22 Live (Undeployed) Air Bag Assembly ..................................................................... 9A- 22
Air Bag Assembly Shipping Procedure For Live (Undeployed) Air Bag Assemblies ................................................................................................................ 9A- 2 2
Deployed Air Bag Assembly (Driver Side).............................................................. 9A- 22
Air Bag Assembly Scrapping Procedure................................................................ 9A- 23
Deployment Outside Vehicle (Driver Air Bag Assembly) ...................................... 9A- 23
Deployment Outside Vehicle (Passenger Air Bag Assembly) .............................. 9A- 26
Deployment Inside Vehicle (Vehicle Scrapping Procedure)................................. 9A- 28
Deployed Air Bag Assembly Handling ................................................................... 9A- 31
Service Precautions for SRS Component Service ..................................................... 9A- 32 Disabling The SRS ................................................................................................... 9A- 32
Enabling The SRS .................................................................................................... 9A- 32
Handling / Installation / Diagnosis .......................................................................... 9A- 32
Inspections Required After An Accident ................................................................ 9A- 33
SRS Connectors ........................................................................................................... 9A- 33
Removal .................................................................................................................... 9A- 33
Installation ................................................................................................................ 9A- 34
SRS Control Unit ........................................................................................................... 9A- 35
Service Precautions ................................................................................................. 9A- 35
Removal .................................................................................................................... 9A- 35
Installation ................................................................................................................ 9A- 35
Driver Air Bag Assembly .............................................................................................. 9A- 37 Service Precautions ................................................................................................. 9A- 37
Removal .................................................................................................................... 9A- 37
Installation ................................................................................................................ 9A- 37 PAGE 2 OF 3
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TO MODEL INDEXISUZU KB P190 2007
SUPPLEMENTAL RESTRAINT SYSTEM 9A-3
PAGE
Steering Wheel .............................................................................................................. 9A- 38
Service Precautions ................................................................................................. 9A- 38
Removal .................................................................................................................... 9A- 38
Installation ................................................................................................................ 9A- 38
SRS Coil Assembly ....................................................................................................... 9A- 39 Service Precautions ................................................................................................. 9A- 39
Removal. ................................................................................................................... 9A- 39
Installation. ............................................................................................................... 9A- 39
Steering Column ........................................................................................................... 9A- 4 0
Service Precautions ................................................................................................. 9A- 40
Removal .................................................................................................................... 9A- 40
Installation ................................................................................................................ 9A- 40
Passenger Air Bag Assembly ...................................................................................... 9A- 41 Service Precautions ................................................................................................. 9A- 41
Removal .................................................................................................................... 9A- 41
Installation ................................................................................................................ 9A- 42
Pretensioner Seat Belt (If so equipped) ...................................................................... 9A- 43 Removal .................................................................................................................... 9A- 43
Installation ................................................................................................................ 9A- 43
Main Data and Specifications ...................................................................................... 9A- 44 Fastener Tightening Specification.......................................................................... 9A- 44
Special Tools................................................................................................................. 9 A- 45
PAGE 3 OF 3
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9A-4 SUPPLEMENTAL RESTRAINT 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.
General Description
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 fo
r
that application. If the correct part numbe
r
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.
Restraint Devices
RTW 79ASH000801
Legend
(1) Deployed Air Bag
(2) Knee Bolster
(3) Seat Belt
The Supplemental Restraint System (SRS) helps
supplement the protection offered by the driver and
front passenger seat belts by deploying an air bag
from the center of the steering wheel and from the
front of the passenger side of the instrument panel.
The air bag deploys when the vehicle is involved in a
frontal crash of sufficient force up to 30 degrees off the
centerline of the vehicle. To further absorb the crash
energy there is a knee bolster located beneath the
instrument panel for both the driver and passenger,
and the steering column is collapsible.
827RW 005
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9A-14 SUPPLEMENTAL RESTRAINT SYSTEM
Component Description
SRS Control Unit
WARNING: DURING SERVICE PROCEDURES, BE
VERY CAREFUL WHEN HANDLING A SRS
CONTROL UNIT. NEVER STRIKE OR JAR THE SRS
CONTORL UNIT. NEVER POWER UP THE SRS
WHEN THE SRS CONTROL UNIT IS NOT RIGIDLY
ATTACHED TO THE VEHICLE. ALL SRS CONTROL
UNIT AND MOUNTING BRACKET FASTENERS
MUST BE CAREFULLY TORQUED AND THE
ARROW MUST BE POINTED TOWARD THE FRONT
OF THE VEHICLE TO ENSURE PROPER
OPERATION OF THE SRS. THE SRS CONTROL
UNIT COULD BE ACTIVATED WHEN POWERED
WHILE NOT RIGIDLY ATTACHED TO THE
VEHICLE WHICH COULD CAUSE DEPLOYMENT
AND RESULT IN PERSONAL INJURY.
The SRS control unit is designed to perform the
following functions in the SRS:
1. Energy Reserve — The SRS control unit maintains 30–Volt Loop Reserve (30VLR) energy supply to
provide deployment energy when ignition voltage is
lost in a frontal crash.
2. Frontal Crash Detection — The SRS control unit monitors vehicle velocity changes to detect frontal
crashes which are severe enough to warrant
deployment.
3. Air Bag Deployment — W hen a frontal crash o
f
sufficient force is detected, the SRS control unit
will cause enough current to flow through the ai
r
bag assembly to deploy the air bag.
4. Malfunction Detection — The SRS control unit performs diagnostic monitoring of SRS electrical
components and sets a diagnostic trouble code
when a malfunction is detected.
5. Frontal Crash Recording — The SRS control unit records information regarding SRS status during
frontal crash.
6. Malfunction Diagnosis — The SRS control unit displays SRS diagnostic trouble codes and system
status information through the use of a scan tool.
7. Driver Notification — The SRS control unit warns the vehicle driver of SRS malfunctions b
y
controlling the “SRS” warning lamp.
The SRS control unit is connected to the SRS wiring
harness by a 52–pin connector. This harness
connector uses a shorting clip across certain terminals
in the contact area. This shorting clip connects the
“SRS” warning lamp to ground when the SRS control
unit harness connector is disconnected or CP
A
(Connector Position Assurance) is not inserted even i
f
completely connected. This will cause the “SRS”
warning lamp to come “ON” steady whenever the
ignition switch is at the ON or START positions with
the SRS control unit disconnected.
RTW 79ASH000401
Legend
(1) SRS Control Unit
(2) SRS Harness
“SRS” Warning Lamp
Ignition voltage is applied to the “SRS” warning lamp
when the ignition switch is at the ON or START
positions. The SRS control unit controls the lamp b
y
providing ground with a lamp driver. The “SRS”
warning lamp is used in the SRS to do the following:
1. Verify lamp and SRS control unit operation b
y
flashing SEVEN (7) times when the ignition switch
is first turned “ON”.
2. W arn the vehicle driver of SRS electrical system malfunctions which could potentially affect the
operation of the SRS. These malfunctions could
result in nondeployment in case of a frontal crash
or deployment for conditions less severe than
intended.
The “SRS “ warning lamp is the key to drive
r
notification of SRS malfunctions. For proper lamp
operation, refer to the “SRS Diagnostic System Check”
in this section.
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9A-20 SUPPLEMENTAL RESTRAINT SYSTEM
Repairs And Inspections Required
After An Accident
If any SRS components are damaged, they must be
replaced. If SRS component mounting points are
damaged, they must be replaced.
• Never use SRS parts from another vehicle. This does not include remanufactured parts purchased
from an authorized dealer; they may be used fo
r
SRS repairs.
• Do not attempt to service the SRS control unit, the SRS coil assembly, or the air bag assembly.
Service of these items is by replacement only.
• Verify the part number of the replacement air bag assembly.
CAUTION: Never use the air bag assembly from
another vehicle or different model year air bag
assembly.
Use only a new air bag assembly matched to the
TFR/S which is being repaired.
CAUTION: Proper operation of the sensors and
supplemental restraint system (SRS) requires that
any repairs to the vehicle structure return it to the
original production configuration. Deployment
requires, at a minimum, replacement of the SRS
control unit, air bag assembly and dimensional
inspection of the steering column. Any visible
damage to the SRS control unit mounting bracket
(s) requires replacement, and the steering column
must be dimensionally inspected, whethe
r
deployment occurred or not.
Accident With Deployment – Component
Replacement And Inspections
Certain SRS components must be replaced or
inspected for damage after a frontal crash involving air
bag deployment. Those components are:
• Air bag assembly
• SRS control unit
CAUTION: Refer to “SRS control unit Replacement
Guidelines” below for important information on
SRS control unit replacement in both deployment
and non-deployment crashes.
• SRS coil assembly — Inspect wiring and connecto
r
for any signs of scorching, melting, or damage due
to excessive heat. Replace if damaged. Refer to
section “SRS Coil Assembly” in this manual.
Accident With or Without Deployment –
Component Inspection
Certain SRS system components and rotation parts
must be inspected after any crash, whether the air bag
has been deployed or not. Those components are:
• Steering column — Refer to Inspection Required “After an Accident” in this manual.
• Knee bolsters and mounting points — Inspect fo
r
any distortion, bending, cracking, or other damage.
• I/P steering column reinforcement plate — Inspect for any distortion, bending, cracking, or othe
r
damage.
• I/P braces — Inspect for any distortion, bending, cracking, or other damage.
• Seat belts and mounting points — Refer to “Seat Belts” in Section “Seat Belt” of this workshop
manual.
SRS Control Unit Replacement Guidelines
SRS control unit replacement policy requires
replacement of the SRS control unit after a crash
involving air bag deployment when the “SRS W arning
Lamp” turned “ON”, the “SRS Diagnosis” should be
done according to Section “Restraint Control System.”
Wiring Damage
If any SRS wire harness is damaged, it should be
replaced. Don't repair the SRS harness. It is
replacement only.
SRS Connector (Plastic Body And
Terminal Metal Pin) Damage
If any connector or terminal in the SRS wire harness
(except pigtails) is damaged, it should be replaced.
SRS Wire Pigtail Damage
If the wiring pigtail (a wire or wires attached directly to
the device, not by a connector) is damaged, the entire
component (with pigtail) must be replaced. Examples
of “pigtail” components are the driver air bag
assembly, the passenger air bag assembly, and the
SRS coil assembly.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-21
On–Vehicle Service
Service Precaution
WARNING: WHEN PERFORMING SERVICE ON OR
AROUND SRS COMPONENTS OR SRS WIRING,
FOLLOW THE PROCEDURES LISTED BELOW TO
TEMPORARILY DISABLE THE SRS. FAILURE TO
FOLLOW PROCEDURES COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY OR OTHERWISE UNNECESSARY SRS
REPAIRS.
The SRS control unit in Driver–Passenger SRS can
maintain sufficient voltage to cause a deployment fo
r
up to 15 seconds after the ignition switch is turned
“OFF,” the battery is disconnected, or the fuse
powering the SRS control unit is removed.
Many of the service procedures require removal of the
“SRS” fuse, and disconnection of the air bag assembl
y
from the deployment loop to avoid an accidental
deployment. If the air bag assembly is disconnected
from the deployment loop as noted in the “Disabling
the SRS” procedure that follows, service can begin
immediately without waiting for the 15 second time
period to expire.
Disabling The SRS
Removal
Turn the ignition switch to “LOCK” and remove the
key.
1. Remove the SRS fuse “SRS”, from the side of the driver’s side of the instrument panel fuse block o
r
disconnect the battery.
2. Disconnect the yellow connector at the base of the steering column.
3. Remove the glove box assembly, refer to “Passenger Air Bag Assembly Replacement” in
this manual.
4. Disconnect the yellow connector behind the glove box assembly.
CAUTION: With the “SRS” fuse removed and
ignition switched “ON”, the “SRS” warning lamp
will be “ON”. This is normal operation and does
not indicate an SRS malfunction.
Enabling The SRS
Installation
CAUTION: Never use the air bag assembly from
another vehicle or different model year air bag
assembly.
Use only a new air bag assembly matched to the
TFR/S which is being repaired.
Turn the ignition switch to “LOCK” and remove the
key.
1. Connect the yellow connector passenger air bag assembly.
2. Install the glove box assembly. Refer to “Passenger air bag assembly replacement” in this
manual.
3. Connect the yellow connector at the base of the steering column.
4. Install the “AIR BAG” fuse “SRS” to the side of the driver’s side of the instrument panel fuse block o
r
connect the battery.
Turn the ignition switch to “ON” and verify that the
“SRS” warning lamp flashes seven times and then
turns to “LOCK”. If it does not operate as described,
perform the “SRS Diagnostic System Check” in this
manual.
Handling / Installation / Diagnosis
1. The air bag assembly should not be subjected to temperatures above 65
°C (150°F).
2. The air bag assembly, and SRS control unit, should not be used if they have been dropped from
a height of 100 centimeters (3.28 feet) or more.
3. W hen the SRS control unit is replaced, it must be oriented with the arrow on the sensor pointing
toward the front of the vehicle. It is very important
for the SRS control unit to be located flat on the
mounting surface, parallel to the vehicle datum
line. It is important that the SRS control unit
mounting surface is free of any dirt or other foreign
material.
4. Do not apply power to the SRS unless all components are connected or a diagnostic chart
requests it, as this will set a diagnostic trouble
code.
5. The “SRS Diagnostic System Check” must be the starting point of any SRS diagnostics. The “SRS
Diagnostic System Check” will verify proper “SRS”
warning lamp operation and will lead you to the
correct chart to diagnose any SRS malfunctions.
Bypassing these procedures may result in
extended diagnostic time, incorrect diagnosis, and
incorrect parts replacement.
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