switch ISUZU TF SERIES 2004 Workshop Manual

ELECTRICAL-BODY AND CHASSIS 8A-341
TROUBLESHOOTING
QUICK CHART FOR CHECK POINT
Check Point Fuse
Door Mirror Door Mirror

Trouble Mode C-11
(10A) Control
Switch LH RH
1. Mirrors on the both sides do not operate
2. Mirror on the left (or right) side does not
operate
3. Mirrors on the both sides operate only in
the vertical
(or horizontal) direction





4. Mirror on the left side operates only in
the vertical

(or horizontal)direction



5. Mirror on the right side operates only in
the vertical
(or horizontal) direction



Cable
Harness

8A-342 ELECTRICAL-BODY AND CHASSIS
DOOR MIRROR CONTROL SWITCH
1. Mirrors on the both sides do not operate

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. C-11 (10A)

Poor fuse contact or blown
NG

Repair grounding point
C-2
contact

Grounding point
C-2


Poor grounding point contact

Repair an open circuit or a
poor connection of the
connectors between the fuse
No. C-11 (10A) and 4
D-19
Voltage between the door
mirror control SW. harness
side connector terminal
4
D-19 and the ground
(Should be battery voltage
present)

Open circuit or poor connector
contact
NG NG OK
OK OK

Fuse No. C-11 (10A, Fuse
box)


Repair open circuit or
connector contact

Open circuit or poor connector
contact
NG Continuity between the door
mirror control SW harness
side connector terminal
8
D-19 and C-2

Replace the door mirror
control SW.

Door mirror control SW.
function

SW. malfunction
NG OK

Repair open circuit or
connector contact

Continuity between 7
D-19
and 2
H-24 (or 2 H-25 )


Open circuit or poor connector
contact
NG OK

ELECTRICAL-BODY AND CHASSIS 8A-345
REMOVAL AND INSTALLATION



DOOR MIRROR CONTROL SWITCH
Removal
1. Disconnect the battery ground cable.
2. Door trim pad Assembly

Refer to section 10 “BODY” for door trim pad assembly
removal steps.
3. Door Mirror Control Switch
Remove the power window switch bezel.

Remove the screw.

Disconnect the switch connector.

To remove the switch panel assembly.



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




DOOR MIRROR
Removal and Installation
Refer to the DOOR MIRROR in section 10 “BODY”.

8A-346 ELECTRICAL-BODY AND CHASSIS
INSPECTION AND REPAIR





Switch side
D-19


Door Mirror Control Switch
1. Switch side Connector Circuit
Check continuity between the switch connector terminals
while operating the door mirror control switch as shown in
the following table.






RTW48AMF000601
MV, MH, b, and e terminals have internal connections (circuitry).
4-point switch (Will not operate at intermediate positions.)





Harness side
D-19


2. Harness Side Connector Circuit
Remove the connector No.
D-19 of the mirror control
switch and check voltage and continuity of the harness side
connector.

When there is no continuity at the terminal No. 2, 3, 9
and 10, it is considered that the circuit with terminal No.
7 (W/B) is defective.

ELECTRICAL-BODY AND CHASSIS 8A-347



When there is no continuity at either one of the circuit
No, 5, 7, 8, or 10, the motor in the mirror of the circuit or
the circuit itself is defective.

Terminal
No. Wire
color Connection to Check item Connecting
terminal Check condition Standard
7 W/B LH mirror & RH
mirror Continuity 7-Ground - No continuity
4 R/Y Fuse C-11 (10A) Voltage 4-Ground Starter SW “ACC”
position Approx.
12V
10 W/R RH mirror-LH/RH 10-7 -
2 B/W RH mirror-Up/Down 2-7 -
3 B/R LH mirror-Up/Down Continuity 3-7 - Continuity
8 B Ground 8-Ground -
9 W/G LH mirror-LH/RH 9-7 -






Harness side
D-19


Door Mirror
1. Door Mirror Control Switch Connector Circuit
Disconnect the switch connector
D-19 , apply the battery
voltage to the harness side connector terminals and check
its function.

Connector
No. D-19
Operating
Terminal
Mirror No.9 10 7 3 2direction
+ - Left
- + Right
- +Up
+ -Down
+ - Left
- + Right
- + Up
+ - Down
Left Right

ELECTRICAL-BODY AND CHASSIS 8A-353
TROUBLE SHOOTING
Rear defogger inoperative

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. C-7 (15A) and 9
B-56


Poor fuse contact or blown
NG

Reinstall or replace the fuse
SBF-10 (20A)

SBF-10 (20A, Fuse box)

Poor fuse contact or blown


Replace the rear defogger
switch

Rear defogger switch function

Switch malfunction
NG NG OK
OK OK

Fuse No. C-7 (15A, Fuse box)
and 9
B-56


Replace the rear defogger
relay

Relay malfunction
NG
Continued on the next page

Rear defogger relay function


Repair grounding point
D-2
contact

Grounding point
C-2


Poor grounding point contact
NG OK
Repair open circuit or poor
connector contact between
fuse No. C-7 (15A) and 3
B-7, SBF-10 (20A) and 1
B-7, 2 B-7 (3 B-55) and
1
L-4, 4 B-7 (3 B-54)
and 3
B-46 or 1 B-46 and

C-2
Voltage between 1 L-4-
ground when the starter switch
and the rear defogger switch
are at on position (should be
battery voltage present)
Open circuit or poor connector
contact
NG OK

ELECTRICAL-BODY AND CHASSIS 8A-355
REMOVAL AND INSTALLATION

865R300008


REAR DEFOGGER SWITCH
Removal
1. Instrument Panel Cluster Assembly

Refer to Section 10 “BODY” for center cluster panel
assembly removal steps.
2. Rear Defogger Switch (With HVAC control unit)
Refer to Section 1 “HVAC” HVAC control unit assembly
removal steps.



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

8A-356 ELECTRICAL-BODY AND CHASSIS
INSPECTION AND REPAIR





Switch side
B-57


REAR DEFOGGER SWITCH
Rear Defogger Switch Connections

Terminal No.
SW position 9 7 8
ON
OFF

B-7


REAR DEFOGGER RELAY
Check continuity between the relay terminals.
2- 1......................... No continuity
(When battery voltage is applied between
4 and 3)
2- 1......................... Continuity


INSPECTION OF REAR DEFOGGER HEAT
WIRE

Heat wires are printed on the inner side of glass.
To clean, use a soft cloth and wipe horizontally along the
wires.

Never use glass cleaner or equivalent.

When measuring voltage, wind a piece of tin foil around the
tip of the negative probe and press the foil against the wire
with your finger as shown.



(1) Turn the ignition switch on.
(2) Turn the defogger switch on.
(3) Measure the voltage between the three points on the hea
t
wire and the (-) terminal with a voltmeter.
(4) Check that the voltage becomes smaller from
A to B to C.

8A-372 ELECTRICAL-BODY AND CHASSIS
2WD-4WD Switch
REMOVAL AND INSTALLATION
825R300018

Removal
1. Remove the center cluster ASM
2. Disconnect the connector.
3. Remove the 2WD-4WD switch.


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

8A-410 ELECTRICAL-BODY AND CHASSIS
ANTI THEFT INDICATOR


Removal
1. Disconnect the battery ground cable.


RTW3A0SH001301
2. Remove the side ventilation grille.




RTW08ASH000101
3. Disconnect the indicator connector and screw from the
backside of the side ventilation grille to remove the anti thef
t
indicator.


Installation
To install, follow the removal steps in the reverse order, noting
the following point.
1. Push in the switch with your fingers until it locks securely.