switch ISUZU TF SERIES 2004 Workshop Manual

8A-202 ELECTRICAL-BODY AND CHASSIS
TROUBLESHOOTING
WINDSHIELD WIPER
1. Wiper dose not operate at any switch position

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. RHD: C-9 (20A)

Poor fuse contact or blown
NG

Repair open circuit or
connector contact

1. Wiper motor function when
connecting the motor
connector 3
C-4 to the
battery (+) terminal, and 1
C-4 to the (-) terminal
(Should the wiper motor
rotate at a low speed)
2. Wiper motor function when
connecting the motor
connector 2
C-4 to the
battery (+) terminal, 1
C-4
to the (-) terminal (Should
the wiper motor rotate at a
high speed)
Voltage between 3 B-59 and
the ground (Should be battery
voltage present)

Open circuit or poor connector
contact


Replace the wiper & washer
SW.

Continuity in the wiper &
washer SW.

SW. malfunction
NG NG OK
OK

RHD:
Fuse No. C-9 (20A)


Repair grounding point
C-2
contact


Grounding point
C-2


Poor grounding point contact
NG
OK OK

Replace the wiper motor

Wiper motor malfunction
NG

Repair open circuit or
connector contact

Continuity between 1
C-4
and
C-36


Open circuit or poor connector
contact
NG OK

ELECTRICAL-BODY AND CHASSIS 8A-207
REMOVAL AND INSTALLATION


WIPER AND WASHER SWITCH
Removal
Refer to the removal steps of the LIGHTING SWITCH
(COMBINATION SWITCH) in “ LIGHTING “ of this section.





Installation
Follow the removal procedure in the reverse order to install the
wiper and washer switch.
This illustration is based on RHD model
Pay close attention to the important points mentioned in the
following paragraphs.

Connector
Be absolutely sure that the wiper and washer switch connector
is securely connected.
This will prevent a poor contact and an open circuit.

8A-208 ELECTRICAL-BODY AND CHASSIS
INSPECTION AND REPAIR





Switch side
B-59


Control Switch Connections

Terminal
No.
SW position 6 3 5 4 2 7 1
Mist
Off
INT

Lo
Hi
Wash



Wiper Motor Inspection
Connector



Low Speed Inspection
1. Clamp the wiper motor in a vise.
The moving parts must be clear of the vise.
2. Connect the connector terminals to the battery.
Refer to the illustration.
3. Check the wiper motor low speed operation.

8A-272 ELECTRICAL-BODY AND CHASSIS

Self –diagnostic mode
LCD condition

All LCDs are lit during he transition from self-diagnostic
decision mode to self-diagnostic mode

The odometer/trip indicator scrolls throng its entire range
approximately once every 600 ms. All digits are lit (segmen
t
check indication). This continues until the self-diagnostic
mode is terminated.

Meter and gauge indications
Meter and gauge indications with the change indicator and
reset knob on (self-diagnostic mode) are as shown in the
following table.

RTW38DSF000101


Speedometer 100 kilometers per hour
Tachometer 3,000 rpm
Fuel gauge
Temperature gauge Mid-point on the dial

All indications return to zero when the change indicator and
reset knob is turned off.
The self-diagnostic mode and the self-diagnostic decision
mode are cancelled when the ignition switch is turned to the
OFF position. They also cancel when a speed pulse is sensed.
If either of the self-diagnostic modes are cancelled by turning
the ignition switch to the OFF position, the diagnostic unit
remains in the stand-by condition.
If cancellation occurs when a speed pulse is sensed, the unit
remains in the ordinary operating condition.

8A-278 ELECTRICAL-BODY AND CHASSIS
Low Fuel Indicator Light Inspection
1. Disconnect the fuel tank unit wire connector.
2. Turn the key switch on. Check that the bulb lights.
If operation is not correct, remove and check the bulb or circuit.
or If check whether low fuel turns on fuel input (B-24) at the
time of open and key on.
 meter is check at low fuel
140R300006





Check level sensor operation
1. Remove the fuel tank unit.
2.
Apply battery voltage between terminal (B) and (C) through
a 1.12 watt bulb. Check that the bulb lights.
Note:
It will take a short time for the bulb light.
3. Submerge the sensor in fuel. Check that the bulb goes out.
If operation is not correct, replace the fuel tank unit.

BRAKE SYSTEM WARNING LIGHT
The brake system warning light comes on while the parking
brake is set and the engine run position.
Note:
The parking brake indicator light circuit is designed to
prevent driving of the vehicle with the parking brake on.
It does not indicate the condition of the parking brake
system.



The parking brake switch is in parallel with the brake fluid
switch.



The brake system warning light also comes on when reservoir
brake fluid level falls below the specified limit with the parking
brake released and the engine run position.

8A-302 ELECTRICAL-BODY AND CHASSIS
TROUBLESHOOTING
QUICK CHART FOR CHECK POINTS
Check Points
Fuse
C-14
(20A) Power
Window &
Door Lock
Switch Door
Lock
SwitchKey CYLN
Der switch Door Lock Actuator

Cable


Trouble Mode Driver’s
side Driver’s
side D/S P/S Passen
ger’s
side RR-RH RR-LHHarness
1. All the doors do not
lock and unlock
2. All the doors do not
get locked (or
unlocked)

3. Driver’s side door
does not get locked
(or unlocked)

4. FRT passenger’s side
door does not get
locked (or unlocked)

5. RR door-RH does not
get locked (or
unlocked)

6. RR door-LH does not
get locked (or
unlocked)

7. Door lock does not
operate when
operating from the
driver’s seat side

ELECTRICAL-BODY AND CHASSIS 8A-305
REMOVAL AND INSTALLATION

This photo is based on 2 doors








DRIVER SEAT SIDE POWER WINDOW &
DOOR LOCK SWITCH
Removal
1. Disconnect the battery ground cable.
2. Removes the screw in pull cup with the screwdriver.
3. Remove the switch bezel by pushing the spring with the tip
of a screwdriver.
4. Disconnect the connector.

ATTENTION:
When removing a switch bezel lift from the front in the
bezel.
It follows the front with the screwdriver.
The clip has broken when lifting from the rear in the bezel.



Installation
To install, follow the removal steps in the reverse order.


DRIVER’S SIDE DOOR LOCK SWITCH
Removal
1. Door Lock ASM

Refer to the removal steps of the DOORS in section 10
“BODY”.
2. Door Lock Switch



Installation
To install, follow the removal steps in the reverse order.

ELECTRICAL-BODY AND CHASSIS 8A-307
INSPECTION AND REPAIR








Harness side
D-20 D-5

Driver Seat Side Power Window & Door Lock
Switch
1. Harness Side Connector Circuit
Check voltage and continuity between the switch harness
side connector terminals as shown in the following table.


Terminal
No. Wire
color Connecting to Check itemConnectin
g terminalCheck condition Standard
Door lock SW
Driver seat Lock Continuity
(Lock) side door
Unlock No continuity
Door lock SW
Driver seat Lock No continuity
(Unlock) side door
Unlock Continuity
3 (D-5) L/R Ground
Continuity 3-Ground - Continuity

4 (D-5)
L/R Door lock
actuator (Lock) (Resistance)

4-5
- Continuity
There is some
resistance

5 (D-5)
L Door lock
actuator
(Unlock)
5-4
- Continuity
There is some
resistance
1 (D-5) LG/W Fuse
C-14 (20A) Voltage 1- Ground - Battery voltage
(Approx. 12V)
14-Ground L/R 14 (D-20)
13-Ground L/Y
13 (D-20)

8A-308 ELECTRICAL-BODY AND CHASSIS






Harness side
D-20 D-5
2. Switch Side Connector Circuit
Remove the switch connector, and check continuity and
voltage between the switch connector terminals.
(Connect the (+) terminal of the battery to 1
D-5and the
(-) terminal to 3
D-5.)
3
D-5 - 4 D-5.................. Continuity
3 D-5 - 5 D-5.................. Continuity
(Then, ground 3 D-5.)
4
D-5........... Current flow for approx. 1 second
(Disconnect the ground of 14 D-20 , and ground 13 D-20.)
5
D-5........... Current flow for approx. 1 second




Harness side
D-5
3. Door Lock Operation Test

After confirming that there is continuity between the switch
harness side connector terminals 4
D-5 and 5 D-5,
apply the battery voltage to each of the terminals to conduc
t
the operation test.
When the door lock will not operate, check the door lock
actuator for any trouble.

Connecting terminals
5 (L) 4 (L/R)
+ - Unlock
- + Lock
Operation

ELECTRICAL-BODY AND CHASSIS 8A-309




Switch side
D-4
Driver’s Side Door Lock Switch
1. Switch Side Connector Circuit
Check continuity between the switch connector terminals
Terminal No.
SW position 1 2 3
Lock
Unlock




Actuator side
D-9

Front Passenger’s Side Door Lock Actuator
1. Actuator Side Connector Circuit

Apply the battery voltage to the actuator connector
terminals to check the operation.
When the door lock actuator is checked on the vehicle and
there is no continuity, and when the door lock actuator itsel
f
is checked and no trouble is found, check the circuit
between the door lock actuator and the driver seat side
power window & door lock switch for any failure.

Connecting terminals
1 2
+ - Lock
- + Unlock
Operation





Actuator side
D-14 D-18

Rear Door Lock Actuator -LH & RH
1. Actuator Side Connector Circuit

Apply the battery voltage to the actuator connector
terminals to check the operation.
When the door lock actuator is checked on the vehicle and
there is no continuity, and when the door lock actuator itsel
f
is checked and no trouble is found, check the circuit
between the door lock actuator and the driver seat side
power window & door lock switch for any failure.

Connecting terminals
1 2
+ - Lock
- + Unlock
Operation