2004 ISUZU TF SERIES wheel size

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 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, REFE
R
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, o
r
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
827RW006
Legent
(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.

827RW005

SUPPLEMENTAL RESTRAINT SYSTEM 9A-27

Service Precautions for SRS
Component Service
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 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.
WARNING: WHEN PERFORMING SERVICE ON O
R
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 UNNEEDED SRS
REPAIRS.
The SRS control unit in Driver–Passenger SRS can
maintain sufficient voltage to cause a deployment for
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 assembly
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 “OFF” and turn the steering
wheel so that the vehicle's wheels are pointing straight
ahead.
1. Remove SRS fuse “SRS” from left dash side lowe
r
fuse block or disconnect battery.
2. Disconnect yellow connector at the base o
f
steering column.
3. Remove glove box assembly; Refer to “Passenge
r
air bag assembly replacement” in this section.
4. Disconnect passenger air bag assembly yello
w
connector behind the glove box assembly.
CAUTION: With the “SRS” fuse removed and
ignition switch “ON,” the “AIR BAG” warning lamp
will be “ON.” This is normal operation and does
not indicate an SRS malfunction.
Enabling The SRS
Installation
Turn ignition switch to “LOCK” and remove key.
1. Connect yellow connector passenger air bag
assembly.
2. Install glove box assembly. Refer to “Passenge
r
Air Bag Assembly Replacement” in this section.
3. Connect yellow connector at the base of the
steering column.
4. Install “AIR BAG” fuse “SRS” to left dash side
lower fuse block or connect battery.
Turn ignition switch to “ON” and verify that the “AIR
BAG” warning lamp flashes seven times and then
turns “OFF.” If it does not operate as described,
perform the “SRS Diagnostic System Check” in this
section.

Handling / Installation / Diagnosis
1. Air bag assembly should not be subjected to
temperatures above 65

C (150

F).
2. 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. When a SRS control unit is replaced, it must be
oriented with the arrow on the SRS control unit
pointing toward the front of the vehicle. It is ver
y
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 “AIR
BAG” warning lamp operation and will lead you to
the correct chart to diagnose any SRS
malfunctions. Bypassing these procedures ma
y
result in extended diagnostic time, incorrect
diagnosis, and incorrect parts replacements.

Inspections Required After An Accident
CAUTION: Certain SRS components must be
replaced after a frontal crash involving air bag
deployment.
In all types of accidents regardless of “Air Bag”
deployment, visually inspect all of the following
components and replace as required:

PROPELLER SHAFT 4A-3
MAIN DATA AND SPECIFICATIONS
REAR PROPELLER SHAFT

mm(in)
4

2 Model
Engine Model 4JA1-T(L) 4JA1-TC 4JH1-TC
Transmission Type 5 M/T (MUA) 5M/T (MUA) 4A/T
Wheel Base Long Long Extra Long Long
Front Suspension
High Ride
SuspensionExcept High
Ride
Suspension


Rear Axle 
220mm 



Type 
OBS 



Outside Diameter mm 75 68.9 68.9 68.9 63.5
(in) (2.95) (2.71) (2.71) (2.71) (2.50)
Inside Diameter mm 71.8 64.9 64.9 64.9 60.3
(in) (2.89) (2.63) (2.63) (2.63) (2.44)
Length 1st(L1) mm 799.5 798.5 801.5 946.5 720.5
(in) (31.48) (31.44) (31.56) (37.26) (28.37)
2nd(L2) mm 796 801 796 801 801
(in) (31.34) (31.54) (31.34) (31.54) (31.54)
Spline Major mm 29.89 29.89 29.89 29.89 29.89
Diameter (in) (1.18) (1.18) (1.18) (1.18) (1.18)
Fix Bolt Size M10 M10 M10 M10 M10
* OBS - Outboard Slip (Spline Engagement To T/M)



mm(in)
4

2 Model
Engine Model C24SE
6VE1
Transmission Type 5M/T (MUA)
5M/T (MUA) 4A/T
Wheel Base Long Extra Long Long Extra Long Long Extra Long
Front Suspension High Ride
Suspension Except High
Ride
Suspension










Rear Axle 


220mm 



Type 


OBS 



Outside Diameter mm 75 75 75 68.9 68.9 75 75
(in) (2.95) (2.95) (2.95) (2.71) (2.71) (2.95) (2.95)
Inside Diameter mm 71.8 71.8 71.8 64.9 64.9 71.8 71.8
(in) (2.89) (2.89) (2.89) (2.63) (2.63) (2.89) (2.89)
Length 1st(L1) mm 823.5 820.5 970.5 823.5 971.5 778.5 928.5
(in) (32.42) (32.30) (38.21) (32.42) (38.25) (30.65) (36.56)
2nd(L2) mm 801 796 796 801 801 801 801
(in) (31.54) (31.34) (31.34) (31.54) (31.54) (31.54) (31.54)
Spline Major mm 29.89 29.89 29.89 29.89 29.89 30.48 30.48
Diameter (in) (1.18) (1.18) (1.18) (1.18) (1.18) (1.20) (1.20)
Fix Bolt Size M10 M10 M10 M10 M10 M10 M10
* OBS - Outboard Slip (Spline Engagement To T/M)

4A-4 PROPELLER SHAFT

mm(in)
4

4 Model
Engine Model 4JA1-T(L) 4JA1-TC 4JH1-TC
Transmission Type 5M/T (MUA) 5M/T (MUA) 4A/T
Wheel Base Long Long Extra Long Long
Front Suspension








Rear Axle 220mm 220mm 


Type OBS OBS 


Outside Diameter mm 75 68.9 68.9 63.5
(in) (2.95) (2.71) (2.71) (2.50)
Inside Diameter mm 71.8 64.9 64.9 60.3
(in) (2.89) (2.63) (2.63) (2.44)
Length 1st(L1) mm 469.5 468.5 616.5 402.5
(in) (18.48) (18.44) (24.27) (15.85)
2nd(L2) mm 801 801 801 801
(in) (31.54) (31.54) (31.54) (31.65)
Spline Major mm 29.89 29.89 29.89 29.89
Diameter (in) (1.18) (1.18) (1.18) (1.18)
Fix Bolt Size M10 M10 M10 M10
* OBS - Outboard Slip (Spline Engagement To T/M)


mm(in)
4

4 Model
Engine Model C24SE 6VE1
Transmission Type 5M/T
(MUA) 5M/T (MUA) 4A/T
Wheel Base Long Long Extra Long Long
Front Suspension




Rear Axle    
Type    
Outside Diameter mm 63.5 68.9 68.9 75
(in) (2.50) (2.71) (2.71) (2.95)
Inside Diameter mm 60.3 64.9 64.9 71.8
(in) (2.44) (2.63) (2.63) (2.89)
Length 1st(L1) mm 495.5 492.5 641.5 484.5
(in) (19.51) (19.39) (25.26) (19.07)
2nd(L2) mm 801 801 801 801
(in) (31.54) (31.54) (31.54) (31.54)
Spline Major mm 29.89 29.89 29.89 29.89
Diameter (in) (1.18) (1.18) (1.18) (1.18)
Fix Bolt Size M10 M10 M10 M10
* OBS - Outboard Slip (Spline Engagement To T/M)

4A-6 PROPELLER SHAFT
Front Propeller Shaft

mm(in)
4

4 Model
Engine Model 4JA1-T(L) 4JA1-TC 4JH1-TC C24SE 6VE1
Transmission Type 5M/T (MUA) 5M/T
(MUA) 4A/T 5M/T
(MUA) 5M/T
(MUA) 4A/T
Wheel Base Long Long Long Long Long Long
Outside Diameter mm 40 40 40 40 40 40
(in) (1.57) (1.57) (1.57) (1.57) (1.57) (1.57)
Inside Diameter mm 32 32 32 32 32 32
(in) (1.26) (1.26) (1.26) (1.26) (1.26) (1.26)
Length (L) mm 607 607 676 586 586 607
(in) (25.90) (25.90) (26.61) (23.07) (23.07) (23.90)
Fix Bolt Size T/F M10 M10 M10 M10 M10 M10
Axle M10 M10 M10 M10 M10 M10


RTW34ASF000101

FRONT WHEEL DRIVE 4C1-3
MAIN DATA AND SPECIFICATIONS
FRONT AXLE AND DIFFERENTIAL
Ring gear size mm (in) 194 (7.6)
Axle tube
Type It consists of the duce, a cast iron housing and the Axle tube.
Gear type Hypoid
Gear ratio (to 1) 4.100, 4.300, 4.555, 4.777, 5125
Differential type Two pinion
Specified gear oil (APL grade) GL-5
Oil capacity liter 1.4
(US/UK gal.) (0.4/0.33)
Axle shaft type Constant velocity joint (Birfield joint type and double offset joint).


FRONT PROPELLER SHAFT mm(in)
4

4 Model
Engine Model 4JA1-T(L) 4JA1-TC 4JH1-TC C24SE 6VE1
Transmission Type 5M/T (MUA) 5M/T
(MUA) 4A/T 5M/T
(MUA) 5M/T
(MUA) 4A/T
Front Axle 194 mm










Outside Diameter mm 40 40 40 40 40 40
(in) (1.57) (1.57) (1.57) (1.57) (1.57) (1.57)
Inside Diameter mm 32 32 32 32 32 32
(in) (1.26) (1.26) (1.26) (1.26) (1.26) (1.26)
Length (L) mm 607 607 676 586 586 607
(in) (23.90) (23.90) (26.61) (23.07) (23.07) (23.90)
Fix Bolt Size T/F M10 M10 M10 M10 M10 M10
Axle M10 M10 M10 M10 M10 M10

5A-68 BRAKE CONTROL SYSTEM

DTC C0238 (Flash Code 38) Tire Diameter Error

Step Action
Value(s) Yes No
1 Was the “Basic Diagnostic Flow Chart” performed?
- Go to Step 2 Go to Basic
Diagnostic
Flow Chart
2 1. Check for the tire size of each wheels.
2. If the tire size is different, replace the tire.
3. If a problem is found, repair as necessary.
Was a problem found?
- Verify repair Go to Step 3
3 1. Check for the gear ratio of a front axle differential
gear and a rear axle differential gear.
2. If the gear ratio is different, repair the gear ratio.
3. If a problem is found, repair as necessary.
Was a problem found?
- Verify repair Go to Step 4
4 Select “Display DTCs” with the Tech 2.
Note : Perform the various tests (actuator test, test
run, brake test, etc.) then observe the DTC with a
Tech2.
Are any DTCs stored? - Go to Step 5 Verify repair
5 Replace EHCU.
Note : Check the EHCU type for specification, when
the EHCU is replaced.
(Specification ; 2WD model or 4WD model)
Was the action complete? - Verify repair -

BRAKES 5C-27


15. Repeat steps 12 through 14 until no air comes out of the
port when the brake pipe is loosened
NOTE : Be very careful not to allow the brake fluid to come in
contact with painted surfaces.


16. Bleed the air from the front wheel brake pipe connection (2)
by repeating steps 6 through 15.

Bleeding the Caliper
17. Bleed the air from each wheel in the order listed below:

Right rear wheel cylinder

Left rear wheel cylinder

Left front caliper
 Right front caliper
Conduct air bleeding from the wheels in the above order. I
f
no brake fluid comes out, it suggests that air is mixed in the
master cylinder. In this case, bleed air from the maste
r
cylinder. In this case, bleed air from the master cylinder in
accordance with steps 6 through 16, and then bleed ai
r
from the caliper or wheel cylinder.

RTW35CSH000501

18. Place the proper size box end wrench over the bleeder
screw.
19. Cover the bleeder screw with a transparent tube, and
submerge the free end of the transparent tube in a
transparent container containing brake fluid.

5042

20. Pump the brake pedal slowly three (3) times (once/sec),
then hold it depressed.
21. Loosen the bleeder screw until fluid flows through the tube.
22. Retighten the bleeder screw.
23. Release the brake pedal slowly.
24. Repeat steps 21 through 24 until the air is completel
y
removed.
It may be necessary to repeat the bleeding procedure 10 o
r
more times for front wheels and 15 or more times for rear
wheels.
25. Go to the next wheel in the sequence after each wheel is
bled.
Be sure to monitor reservoir fluid level.
26. Depress the brake pedal to check if you feel “sponginess"
after the air has been removed from all wheel cylinders and
calipers.
If the pedal feels “spongy", the entire bleeding procedure
must be repeated.