2004 ISUZU TF SERIES clutch

8A-424 ELECTRICAL-BODY AND CHASSIS


No. Connector face No. Connector face
C-68
~
C-76 NOT USED C-106
NOT USED
C-77

Clutch switch C-107
WhiteJ/B E2
C-78
~
C-93 NOT USED C-108
White
J/B E1
C-94
(6VE1)
Gray TCM-(A) C-109
SilverBody-LH ; ground
C-94
(4JH1-TC)
White TCM C-110
~
C-114NOT USED
C-95
(6VE1)
White TCM-(B) C-115
(4JH1-TC)
BrownEVRV
C-95
(4JH1-TC)
White TCM C-116


C-96
~
C103 NOT USED C-117
(6VE1)
(4JH1-TC)
Anti theft horn
C-104
Brown
Resister C-118
(4JH1-TC)
A/C Resister & Neutral switch
C-105
White
Blower motor C-119
(6VE1)
Auto cruise actuator

8A-428 ELECTRICAL-BODY AND CHASSIS


No. Connector face No. Connector face
E-1
(4JH1-TC)
White Oil pressure switch E-10
SilverEngine ground
E-2
(C24SE)
(6VE1)


Magnetic clutch E-11
(6VE1)

Neutral switch
E-3
(4JH1-TC)
Black
Magnetic clutch AC COMP E-11
(4JH1-TC)
Natural
green
Neutral switch
E-4
~
E-5 NOT USED E-12
(6VE1)

Neutral switch
E-6
(C24SE)
(6VE1)


(6VE1) Fuel injector (C24SE) E-12
(4JH1-TC)
Natural
green
Neutral switch
E-6
(4JH1-TC)

Injector pump E-13
~
E-17 NOT USED
E-7
(C24SE)
(6VE1)


(6VE1) Fuel injector (C24SE) E-18
(C24SE)

Ignition coil
E-8
(C24SE)
(6VE1)


(6VE1) Fuel injector (C24SE) E-19
(4JH1-TC)
Blue Thermo meter unit
E-9
(C24SE)
(6VE1)


(6VE1) Fuel injector (C24SE) E-20
~
E-21 NOT USED
E-9
(4JH1-TC)
Gray T.D.C sensor E-22
(4JH1-TC)
BrownTPS 1 main

CRUISE CONTROL SYSTEM 8B-1
SECTION 8B
CRUISE CONTROL SYSTEM
TABLE OF CONTENTS
PAGE
Service Precaution .........................................................................................................................8B- 3
General Description .......................................................................................................................8B- 3
Brake Switch ...................................................................................................................................8B- 5
Removal .......................................................................................................................................8B- 5
Installation ..................................................................................................................................8B- 5
Adjustment ..................................................................................................................................8B- 6
Clutch switch ...................................................................................................................................8B- 6
Removal and Installation ........................................................................................................8B- 6
Adjustment ..................................................................................................................................8B- 6
Starter Switch ..................................................................................................................................8B- 6
Removal .......................................................................................................................................8B- 6
Installation ..................................................................................................................................8B- 6
Cruise Control Main Switch .........................................................................................................8B- 7
Removal .......................................................................................................................................8B- 7
Installation ..................................................................................................................................8B- 7
Cruise Control Switch (Combination Switch) ........................................................................8B- 7
Removal and Installation ........................................................................................................8B- 7
Cruise Control Unit ........................................................................................................................8B- 8
Removal .......................................................................................................................................8B- 8
Installation ..................................................................................................................................8B- 8
Cruise Actuator ...............................................................................................................................8B- 8
Actuator Cable Diagram ..........................................................................................................8B- 9
Removal .......................................................................................................................................8B- 9
Installation ..................................................................................................................................8B- 9
Adjustment ..................................................................................................................................8B- 9
Mode Switch ....................................................................................................................................8B- 9
Removal and Installation ........................................................................................................8B- 9

8B-2 CRUISE CONTROL SYSTEM
Diagnosis ..........................................................................................................................................8B- 10
DTC Display Condition ............................................................................................................8B- 10
DTC Display Format .................................................................................................................8B- 11
Circuit Diagram ..........................................................................................................................8B- 11
DTC 1-1 Motor System Short Circuit ....................................................................................8B- 13
DTC 1-2 Clutch Open or Short Circuit .................................................................................8B- 14
DTC 1-3 Mechanical Defect ....................................................................................................8B- 15
DTC 1-4 Close Side of Motor System ..................................................................................8B- 16
DTC 2-1 Signal of Vehicle Speed Malfunction ..................................................................8B- 17
DTC 3-1 Turning On Switch at All time or at the same time ..........................................8B- 18

8B-4 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 the vehicle accelerates its speed during
that time. The vehicle speed at which the vehicle was 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:

Brake pedal is pressed.

Clutch pedal is pressed. (M/T)

Select lever is shifted to any position other than “D”, “3”, “2” or “L”. (A/T)

Cancel switch is operated.

Vehicle speed exceeds about 12.5mph 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:

Starter switch or the main switch is turned off.

Fail-safe function is activated.

Vehicle speed is about 38 km/h mph.

Speed becomes 20 (12.5) km/h (mph) or less form the speed memorized by Control unit.

8B-6 CRUISE CONTROL SYSTEM
Adjustment
1. Check to be sure that the brake pedal has been completely
returned by the return spring.
2. Disconnect the switch connector.



RTW3A0SH001201

3. Release the lock (2) by turning the switch (1) counter-clock-
wise.
4. After doing so, pull the pedal arm (3) to you a little so tha
t
the pedal arm is not pushed in.
5. Making the pedal arm not movable with one hand, push in
the whole switch with the other hand until the plunger of the
switch is pushed in and the switch itself hits the rubber o
f
the pedal arm.
In the condition, turn the switch clock-wise until "click"
sound is made and lock it.
By doing this, the switch is adjusted at 0.2 to 1.2mm (0.01-
0.06 in.) clearance.

Clutch Switch


Removal and Installation
Refer to the Clutch Control removal and installation steps in
Clutch section.

Adjustment
1. Turn the clutch switch or stopper bolt 1 until the switch bolt
or stopper bolt just touches the clutch pedal arm.
2. Adjust clutch switch or stopper bolt by backing it out half a
turn, and measure the clearance (L) between the clutch
pedal arm and the clutch switch bolt end or stopper bolt.
3. Lock the lock nut
2.
4. Connect the clutch switch connector.

Clutch switch and clutch and clutch pedal clearance
mm (in)

Limit 0.5-1.5 (0.020-0.059)


Starter Switch

431R300001
Removal
1. Steering Lock Assembly

Refer to the Steering Lock assembly removal steps o
f
"Steering Column" in Power-Assisted Steering System
section.
2. Starter Switch

Installation
Follow the removal procedure in the reverse order to install the
starter switch.

8B-10 CRUISE CONTROL SYSTEM
Diagnosis
The cruise control unit uses the cruise main indicator light and diagnosis the failure, when the control unit detects
abnormality on the table below.

PART POSSIBLE CAUSE DETECTION PERIOD DTC
Actuator Motor system short circuit Energizing motor 1-1
Clutch system short circuit Energizing clutch 1-2
Clutch system open circuit Energizing clutch 1-2
Mechanical defect Cruise controlling 1-3
Close side of motor system open circuit Cruise controlling 1-1
Cruise control unit Close side of motor system open circuit While starter sw on 1-4
Clutch output abnormality While starter sw on 1-4
Vehicle speed sensor Signal of vehicle speed disconnection Cruise controlling 2-1
Signal of vehicle speed abnormality Cruise controlling 2-1
Switch Turning on switch at all times While starter sw on 3-1
Turning on switch at the same time While starter sw on 3-1
DTC : Diagnostic Trouble Code

DTC Display Condition
1. With the vehicle stationary and the ignition ON, activate the ‘Cruise Cancel’ switch three times within 2 seconds.
2. If there are no DTC’s stored in the Cruise control unit, the LED on the Cruise Main switch will blink rapidly (2Hz).
3. Any DTC’s stored in the Cruise control unit will be displayed by the CRUISE SET warning lamp in the meter
cluster.
4. Read the set DTC’s by referring to then charts on this page.

NOTE:

The DTC display mode will be aborted if either the vehicle speed rises above 10km/h or the RESUME switch is
operated.

The control module stores the DTC in a ‘volatile’ memory – that is the memory is only active while the ignition is
ON.
Turning the ignition to the OFF position will clesr any stored DTC’s.

8B-14 CRUISE CONTROL SYSTEM
DTC 1–2 Clutch System Open or Short Circuit

Step Action Value(s) YES NO
1
1. Turn the starter switch off.
2. Disconnect the actuator connector C–119.
3. Measure resistance between actuator side
connector terminal 3 and 4.
Is there resistance within range specified in the
value(s) column?



34.7 –
42.4




Go to Step 2



Replace the
actuator
2
1. Disconnect the brake switch connector C–44.
2. Check continuity between switch side connector
terminal 3 and 4.
Is there continuity between terminals?


—


Go to Step 3

Replace the
switch
3
1. Reconnect the brake switch connector C–44.
2. Check continuity between harness side connector
C–120 terminal 6 and connector C–44 terminal 3,
connector C–119 terminal 4 and connector C–120
terminal 8.
Is there continuity between terminals?




—




Go to Step 4



Replace open
circuit
4 Check continuity between harness side connector
C–119 terminal 3 and the ground, connector C–119
terminal 4 and the ground, connector C–120
terminal 6 and the ground.
Are the results same as specified in the value(s)
column?



No
continuity



Replace the
control unit



Repair short
circuit