4jh1 ISUZU TF SERIES 2004 Workshop Manual

IMMOBILIZER SYSTEM 11A-45

B0007 NO ENGINE REQUEST RECEIVED
Step Action Value(s) Yes No
1
Was the "Immobilizer System Check" performed? 
Go to Step 2
Go to Immobilizer
System Check
2 Recheck the DTC on ICU.
1. Key position is “OFF”.
2. Install the scan tool on vehicle.
3. Key position is “ON”.
4. Check the DTC on scan tool.
Is DTC B0007 stored? 
Go to Step 3
Refer to
Diagnostic Aids
3 Check the immobilizer communication line circuit.
1. Key position is “OFF”.
2. Disconnect the immobilizer control unit (ICU).
3. Disconnect the engine control module (ECM).
4. Check the immobilizer communication line circuit
for an open, short to ground, or short to voltage.
Also, check the ICU and ECM ignition feed circuits for
an open or short to ground and the ICU and ECM
ground circuit for an open.
Was a problem found? 
Go to Step 4
Go to Step 5
4 Repair or replace the immobilizer communication line
circuit.
Was the action complete? 
Verify repair 
5 Recheck the DTC on ICU.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Is DTC B0007 stored? 
Go to Step 6
Verify repair
6 Recheck the DTC on ECM.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Are below DTCs stored?
P1649 (6VE1, C24SE) , P1611/P1614 (4JH1-TC) 
Go to Step 7
Go to Step 9
7 Perform the immobilizer programming functions.
(Refer to "Important information on Programming")


Engine control module (ECM).
Was the action complete? 
Go to Step 8
Go to Step 11
8 Recheck the DTC on ECM.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Are below DTCs stored?
P1649 (6VE1, C24SE) , P1611/P1614 (4JH1-TC) 
Go to Step 11
Go to Step 12

11A-46 IMMOBILIZER SYSTEM

Step Action Value(s) Yes No
9 Check the immobilizer programming functions.

Engine control module (ECM).
If a problem is found, repair as necessary.
(Refer to "Important information on Programming")
Was the action complete? 
Go to Step 10
Go to Step 11
10 Recheck the DTC on ECM.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Are below DTCs stored?
P1649 (6VE1, C24SE), P1611/P1614 (4JH1-TC) 
Go to Step 11
Go to Step 12
11 Replace the engine control module (ECM).
IMPORTANT:
The replacement ECM must be
programmed the security data by scan tool.
Was the action complete? 
Go to Step 12 
12 Recheck the DTC on ECM.
1. Key position is “OFF” and keep the position for
more than 30 seconds.
2. Key position is “ON”.
3. Check the DTC on scan tool.
Are below DTCs stored?
P1626 (6VE1, C24SE), P1612/P1613 (4JH1-TC) 
Go to Step 13
Go to Step 2
13 Replace the immobilizer control unit (ICU).
IMPORTANT:
The replacement ICU must be
programmed the security data by scan tool.
Was the action complete? 
Verify repair


ANTITHEFT SYSTEM 11B – 11
RTW48AXF025001
A
DOOR SW-DR
B-73
DOOR SW-PASSDOOR SW-RR RHDOOR SW-RR LH
L-7
0.5
B/W0.5
B/W0.5
B/W
0.5
R/G0.5
R/G0.5
R/G 0.5
R/G0.5
R/G
1
ALARMER C/U
(BUZZER)
1=with ALARMER C/U(BUZZER) only0.5
R/G0.5
R/G0.5
R/W
1.25
B
1.25
B
2.0
B
2.0
B
DOME
LIGHTHORN;
ANTI THEFT
L-91
H-72 L-9
2
RR DEF
(1)
WELD
SPLICE MAP
LIGHT
C-109
BODY-CTR
R-62
R-61
R-11
R-101
R-91 2
H-26L-11
L-1
2
H-1210
H-127R-1R-10R-9
0.5
R/B0.5
R/B
0.5
R/B0.5
R/B
2 2 2
9
H-2614
H-2613
H-26
C-11 10A
AUDIO
2 B-56 3
B-624 2
B-62 B-62
3 B-63
P-6P-5
8
BIG.1IG.2 MAIN
20
B/Y8
B/R
3
W/B
3
W3
W/B
3
B/Y
0.5
R/Y0.5
R/W0.5
R/W0.85R/Y
0.85
O/W
0.85O/W 1.25
LG/W 5
W
P-11
C-108 2
C-108
B1 B2
IG1 IG2 ACCOFF
ST
P-10P-2SBF-180A (4JA1/4JH1)
100A (6VE1/C24SE)
DOOR LOCKC-14
20A
ANTI THEFTC-17
10A
ROOM LAMPC-16
10A SBF-540A50A
SBF-9
BODY ENGINE
JANCTION BLOCK
B-56
8
B-43
2B-43
6
H-134
H-257
D-207
D-206H-104
H-247
D-103
D-104B-44
1B-44
2 4
B-445
B-442
C-117
5
H-12 9
B-43 3
B-43B-55
4B-56C-108
4
H-810 C-117
1 6
H-620
AUTO DOOR LOCK SW.
DRIVER SIDE
AUTO DOOR LOCK SW.
PASSENGER SIDE
0.5
LG/R
0.5
LG/R0.5
LG/R 0.5
R/L
0.5
R/L0.5
R/L
(POWER WINDOW SW.)
LOCK UN LOCK
WITH POWER WINDOW
DOOR LOCK
MOTORB ACC
ANTI THEFT C/U(with KEYLESS ENTRY) STARTER
SW.
3
L
POWER
SUPPLY
RTW48AXF025001
WIRING DIAGRAM (LHD)

11B – 16 ANTITHEFT SYSTEM
A
DOOR SW-DR
B-73
DOOR SW-PASSDOOR SW-RR RHDOOR SW-RR LH
L-7
0.5
B/W0.5
B/W0.5
B/W
0.5
R/G0.5
R/G0.5
R/G 0.5
R/G0.5
R/G
1
ALARMER C/U
(BUZZER)
1=with ALARMER C/U(BUZZER) only0.5
R/G0.5
R/G0.5
R/W
1.25
B
1.25
B
2.0
B
2.0
B
DOME
LIGHTHORN;
ANTI THEFT
L-91
H-185 L-9
2
RR DEF
(1)
WELD
SPLICE MAP
LIGHT
C-2
ENGINE 
ROOM RH
R-62
R-61
R-11
R-101
R-91 2
H-26L-11
L-1
2
H-1210
H-127R-1R-10R-9
0.5
R/B0.5
R/B
0.5
R/B0.5
R/B
2 2 2
9
H-2614
H-2613
H-26
C-11 10A
AUDIO
2 B-56 3
B-624 2
B-62 B-62
3 B-63
P-6P-5
8
BIG.1IG.2 MAIN
20
B/Y8
B/R
3
W/B
3
W3
W/B
3
B/Y
0.5
R/Y0.5
R/W0.5
R/W0.85R/Y
1.25
LG/W 5
W
P-11
C-108 2
C-108
B1 B2
IG1 IG2 ACCOFF
ST
P-10P-2SBF-180A (4JA1/4JH1)
100A (6VE1/C24SE)
DOOR LOCKC-14
20A
ANTI THEFTC-17
10A
ROOM LAMPC-16
10A SBF-540A50A
SBF-9
BODY ENGINE
JANCTION BLOCK
B-56
8
B-43
2B-43
6
H-104
H-247
D-207
D-206H-134
H-257
D-103
D-104B-44
1B-44
2 4
B-445
B-442
C-117
5
H-12 9
B-43 3
B-43B-55
4B-56C-108
4
H-181 C-117
1 6
AUTO DOOR LOCK SW.
DRIVER SIDE
AUTO DOOR LOCK SW.
PASSENGER SIDE
0.5
LG/R
0.5
LG/R0.5
LG/R 0.5
R/L
0.5
R/L0.5
R/L
(POWER WINDOW SW.)
LOCK UN LOCK
WITH POWER WINDOW
DOOR LOCK
MOTORB ACC
ANTI THEFT C/U(with KEYLESS ENTRY) STARTER
SW.
3
L
POWER
SUPPLY
RTW48AXF023901
WIRING DIAGRAM (RHD)

11B – 18 ANTITHEFT SYSTEM
A
DOOR SW-DR
B-73
DOOR SW-PASSDOOR SW-RR RHDOOR SW-RR LH
L-7
0.5
B/W0.5
B/W0.5
B/W
0.5
R/G0.5
R/G0.5
R/G 0.5
R/G0.5
R/G
1
ALARMER C/U
(BUZZER)
1=with ALARMER C/U(BUZZER) only0.5
R/G0.5
R/G0.5
R/W
1.25
B
1.25
B
2.0
B
2.0
B
DOME
LIGHTHORN;
ANTI THEFT
L-91
H-185 L-9
2
RR DEF
(1)
WELD
SPLICE MAP
LIGHT
C-2
ENGINE 
ROOM RH
R-62
R-61
R-11
R-101
R-91 2
H-26L-11
L-1
2
H-1210
H-127R-1R-10R-9
0.5
R/B0.5
R/B
0.5
R/B0.5
R/B
2 2 2
9
H-2614
H-2613
H-26
C-11 10A
AUDIO
2 B-56 3
B-624 2
B-62 B-62
3 B-63
P-6P-5
8
BIG.1IG.2 MAIN
20
B/Y8
B/R
3
W/B
3
W3
W/B
3
B/Y
0.5
R/Y0.5
R/W0.5
R/W0.85R/Y
1.25
LG/W 5
W
P-11
C-108 2
C-108
B1 B2
IG1 IG2 ACCOFF
ST
P-10P-2SBF-180A (4JA1/4JH1)
100A (6VE1/C24SE)
DOOR LOCKC-14
20A
ANTI THEFTC-17
10A
ROOM LAMPC-16
10A SBF-540A50A
SBF-9
BODY ENGINE
JANCTION BLOCK
B-56
8
B-43
2B-43
6
H-104
H-247
D-207
BD-206H-134
H-257
D-103
D-104B-44
1B-44
2 4
B-445
B-442
C-117
5
H-12 9
B-43 3
B-43B-55
4B-56C-108
4
H-181 C-117
1 6
AUTO DOOR LOCK SW.
DRIVER SIDE
AUTO DOOR LOCK SW.
PASSENGER SIDE
0.5
LG/R
0.5
LG/R0.5
LG/R 0.5
R/L
0.5
R/L0.5
R/L
(POWER WINDOW SW.)
LOCK UN LOCK
WITH POWER WINDOW
DOOR LOCK
MOTORB ACC
ANTI THEFT C/U with SUPER LOCK STARTER
SW.
3
L
POWER
SUPPLY
RTW48AXF025401
WIRING DIAGRAM (Super Lock)

POWER-ASSISTED STEERING SYSTEM 3B-1

STEERING
POWER-ASSISTED STEERING SYSTEM
TABLE OF CONTENTS
PAGE
General Description ......................................................................................................... 3B – 4
Power Steering System Test ........................................................................................... 3B – 7
Maintenance ..................................................................................................................... 3B – 8
Fluid Level ........................................................................................................................ 3B – 8
Bleeding The Power Steering System............................................................................ 3B – 8
Bleeding Procedure ......................................................................................................... 3B – 8
Flushing The Power Steering System ............................................................................ 3B – 8
Steering Wheel Free Play Inspection ............................................................................. 3B – 9
Front End Alignment Inspection and Adjustment ......................................................... 3B – 9
Special Tools .................................................................................................................... 3B – 10
Power Steering Unit ......................................................................................................... 3B – 11
Power Steering Unit and Associated Parts ............................................................... 3B – 11
Removal ....................................................................................................................... 3B – 11
Installation ................................................................................................................... 3B – 12
Power Steering Unit Disassembled View .................................................................. 3B – 13
Disassembly ................................................................................................................ 3B – 13
Inspection and Repair ................................................................................................. 3B – 13
Reassembly ................................................................................................................. 3B – 14
Main Data and Specifications ..................................................................................... 3B – 14
Special Tools ............................................................................................................... 3B – 15
Power Steering Pump and Associated Parts (4JH1-TC, 4JA1-TC, 4JA1-L) ............ 3B – 16
Removal ....................................................................................................................... 3B – 16
Installation ................................................................................................................... 3B – 16
Power Steering Pump Disassembled View .............................................................. 3B – 17
Disassembly ................................................................................................................ 3B – 18
Inspection and Repair ................................................................................................. 3B – 18
Reassembly ................................................................................................................. 3B – 19
Main Data and Specifications ..................................................................................... 3B – 19

3B-16 POWER-ASSISTED STEERING SYSTEM

Power Steering Pump
Power Steering Pump and Associated Parts (4JH1-TC, 4JA1-TC, 4JA1-L)
442R300002
Legend
(1) Pump Assembly
(2) Hose, Suction
(3) Hose, Flexible
(4) Bolt


Removal
1. Remove the drive belt.
2. Remove the pulley
3. Place a drain pan below the pump.
4. Disconnect the suction hose.
5. Disconnect the flexible hose.
6. Remove the power steering fixing bolt and remove
the pump assembly.

Installation
1. Install the pump assembly to the pump braket,
tighten the fixing bolt to the specified torque.
Torque: 34 - 46 N·m (3.5 – 4.7 kg·m/25 - 34 lb ft)
2. Install the flexible hose.
Tighten the eye bolt to specified torque.
Torque: 49 - 59 N·m (5.0 – 6.0 kg·m/36 - 43 lb ft)
3. Install the pulley and tighten the bolt to the specified
torque.
Torque: 26 - 30 N·m (2.7 –3.1 kg·m/20 - 22 lb ft)

4. Install the drive belt.
5. Connect the suction hose, then fill and bleed system.
Refer to Bleeding the Power Steering System in this
section.

3B-20 POWER-ASSISTED STEERING SYSTEM

Torque Specifications
4JH1-TC, 4JA1-TC, 4JA1-L N
m (kg
m/Ib ft)


RTW43BLF000501

3C-2 FRONT SUSPENSION
MAIN DATA AND SPECIFICATIONS
4




2 (EXCEPT HIGH RIDE SUSPENSION) MODEL
Front suspension Type Independent wishbone arms, coil spring
with stabilizer bar.
Coil spring Spring Rate 4JH1-TC / 4JA1-TC / 4JA1-L (ENGINE); 9.62 kg/mm
(94.3 N/mm)
C24SE (ENGINE); 7.94 kg/mm (77.9 N/mm)
Type Gas-sealed. Hydraulic, double acting
Stroke 116.5 mm (4.59 in)
Compressed length 284.0 mm (11.18 in)
Front shock absorber
Extended length 400.5 mm (15.77 in)
Stabilizer bar Diameter 25.0 mm (0.98 in)

4




2 (HIGH RIDE SUSPENSION) MODEL
Front suspension Type Independent wishbone arms, torsion bar spring
with stabilizer bar.
Length 1142 mm (44.96 in) Torsion bar spring
Diameter 29.0 mm (1.14 in)
Type Gas-sealed. Hydraulic, double acting
Stroke 121.0 mm (4.76 in)
Compressed length 257.0 mm (10.12 in)
Front shock absorber
Extended length 378.0 mm (14.88 in)
Stabilizer bar Diameter 26.0 mm (1.02 in)

4




4 MODEL
Front suspension Type Independent wishbone arms, torsion bar spring
with stabilizer bar.
Length 1142 mm (44.96 in) Torsion bar spring
Diameter 29.0 mm (1.14 in)
Type Gas-sealed. Hydraulic, double acting
Stroke 121.0 mm (4.76 in)
Compressed length 257.0 mm (10.12 in)
Front shock absorber
Extended length 378.0 mm (14.88 in)
Stabilizer bar Diameter 26.0 mm (1.02 in)

TRANSFER CONTROL SYSTEM 7D1-29

CIRCUIT DIAGRAM (4JA1-TC/4JH1-TC)

RTW 48AXF007101