fog light ISUZU TF SERIES 2004 User Guide

ELECTRICAL-BODY AND CHASSIS 8A-143

RTW48ASH000401

Inspection
Check to see if there is any continuity between the terminals of
the front fog light switch.
Replace the switch when the result of inspection is found
abnormal.

Removal
Preparation:
Disconnect the battery ground cable.
1. Ventilation grille
2. Harness connector
3. Front fog light & Rear fog light switch
To remove the switch, push the lock from the back side of
the cluster assembly.
4. Remove the bulb.




RTW48ASH000301
Installation
To install, follow the removal steps in the reverse noting the
following point.
1. Push in the switch with your fingers until it locks securely.

8A-144 ELECTRICAL-BODY AND CHASSIS
REAR FOG LIGHT
PARTS LOCATION (RHD)







RTW48AXF015401 & RTW48AXF015501

8A-148 ELECTRICAL-BODY AND CHASSIS




RTW48ASH000701

REAR FOG LIGHT
Removal
1. Remove the screws 1.
2. Remove the lens cover
2.
3. Rear fog push turn the bulb
3 counterclockwise to
disconnect it from the light housing.



Installation
Follow the removal procedure in the reverse order to install the
rear fog light.
Pay close attention to the important points mentioned in the
following paragraphs.



Bulb
Be absolutely sure that the license plate light bulb is correctly
installed.
This will prevent a poor contact and open circuit.




RTU4Z0SH000601
FRONT FOG & RR FOG SWITCH



RTW48ASH000401

Inspection
Check to see if there is any continuity between the terminals of
the leveling switch.
Replace the switch when the result of inspection is found
abnormal.

Removal
Preparation:
Disconnect the battery ground cable.
1. Ventilation grille
2. Harness connector
3. Front fog light & Rear fog light switch
To remove the switch, push the lock from the back side of
the cluster assembly.
4. Remove the bulb.

8A-418 ELECTRICAL-BODY AND CHASSIS

CONNECTOR LIST
No. Connector face No. Connector face
B-1
~
B-6 NOT USED B-17
~
B-19 NOT USED
B-7
Black
Rear defogger relay B-20
WhiteCigar lighter illumination
B-8
Black
Power Window Relay B-21
WhiteCigar lighter
B-9
NOT USED B-22
Black
Cigar lighter
B-10
White
Clock B-23
GreenMeter-A
B-11


B-12 NOT USED B-24
Green
Meter-B
B-13
White
Fan switch B-25
~
B-27 NOT USED
B-14
Gray
Audio B-24
GreenGround Driver Side
B-15
NOT USED B-30
~
B-29 NOT USED
B-16
White
Hazard switch B-31
SDM

ELECTRICAL-BODY AND CHASSIS 8A-421


No. Connector face No. Connector face
B-75
Black
Rear fog C/U


B-76
White
Front & rear fog light switch


B-77
(4JA1-L)
White Immobilizer C/U


B-78
White
Immobilizer antenna coil


B-79
White
Short connector (cooler only)


B-80
Black
Hazard relay (RH)


B-81
Black
Hazard relay (LH)

8A-432 ELECTRICAL-BODY AND CHASSIS


No. Connector face No. Connector face
F-1
White
Fuel filter


F-2
White
Fuel pump & sensor


F-3
NOT USED


F-4
Gray
ABS sensor


F-5
Gray
Rear combination lamp-RH


F-6
Gray
Rear combination lamp-LH


F-7
Gray
License plate lamp


F-8
Black
Rear fog light – RH


F-9
Black
Rear fog light - LH

6A – 136 ENGINE MECHANICAL





RTW36ASH000601
Removal
1. Radiator Grille

Refer to removal procedure in Sheet Metal section.







RTW36ASH000501
2. Front Bumper Fascia

Remove the nine clips and four screws.

Disconnect the fog light harness connectors.
















RTW46ASH002101
3. Front Bumper Impact Support Assembly

Remove the nut and two bolts.



4. Inter Cooler

Remove the nut and two bolts.

Disconnect the air hose.




Installation
4. Inter Cooler

Tighten the nut and two bolts.


3. Front Bumper Impact Support Assembly

Tighten the nut and two bolts.



2. Front Bumper Fascia

Install the nine clips and four screws.

Connect the fog light harness connectors.


1. Radiator grille

Refer to installation procedure in Sheet Metal section.

6E–44 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
RELAY A ND FUSE BOX LOCATION (LHD & RHD)
RELAY & FUSE BOX
RELAY
No .RELAY
(4JA1-TC/4JH1-TC)
X -1 RELAY; TAIL LIGHT
X -2 RELAY; FRT F OG LI GHT
X -3 RELAY; HORN
X -4 RELAY; DIMMER
X -5 RELAY; GLOW
X -6 RELAY; COND, FAN
X -7 RELAY; RR FOG
X -8 RELAY; STARTER
X -9 SHORT CONNECTOR
(with Co oler) (LHD)
RELAY; HAZARD-RH (RHD)
X-10 SHORT CONNECTOR
(with Co oler) (LHD)
RELAY; HAZARD-LH (RHD)
X -11 RELAY; HEATER
X-12 RELAY; HEAD LIGHT
X-13 RELAY; ECM MAIN
X-14 RELAY; A/C COMP
X-15 RELAY; THERMO
FUSE
SLOW BLOW FUSE
NO.FUSE
(4JA1-TC/4JH1-TC)
EB-1 10A ECM
EB-2 10A RR FOG
EB-3 15A FRT FOG
EB-4 —
EB-5 10A ILLUMI & TAIL-RH
EB-6 10A TAIL-LH
EB-7 10A H/LIGHT RH-LOW
EB-8 10A H/LIGHT LH-LOW
EB-9 10A TRA ILER
EB-10 10A AC G (S)
EB-11 10A H/LIGHT RH-HIGH
EB-12 10A H/LIGHT LH-HIGH
EB-13 10A A/C
EB-14 10A 4WD
EB-15 10A HORN
EB-16 10A HAZARD
NO.SLOW BLOW FUSE
4JA1-TC/4JH1-TC
SBF-1 80A MAIN
SBF-2 20A COND, FAN
SBF-3 50A GLOW
SBF-4 30A ECM
SBF-5 40A IG 1
SBF-6 40A ABS-1
SBF-7 30A ABS-2
SBF-8 30A BLOWER
SBF-9 50A IG 2

6E–80 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
Step 3: Simulate the symptom and isolate the
problem
Simulate the symptom and isolate the system by
reproducing all possible conditions suggested in Step 1
while monitoring suspected circuits/components/
systems to isolate the problem symptom. Begin with the
most logical circuit/component.
Isolate the circuit by dividing the suspect system into
simpler circuits. Nex t, confine the problem into a smaller
area of the system. Begin at the most logical point (or
point of easiest access) and thoroughly check the
isolated circuit for the fault, using basic circuit tests.
Hints
You can isolate a circuit by:
Unplugging connectors or removing a fuse to
separate one part of the circuit from another
If only component fails to operate, begin testing the
component
If a number of components do not operate, begin test
at areas of commonality (such as power sources,
ground circuits, switches, main connectors or major
components)
Substitute a known good part from the parts
department or the vehicle system
Try the suspect part in a known good vehicle
See Symptom Simulation Tests on the nex t page for
problem simulation procedures. Refer to service manual
sections 6E and 8A for information about intermittent
diagnosis. Follow procedures for basic circuit testing in
service manual section 8A.
What resources you should use
Whenever appropriate, you should use the following
resources to assist in the diagnostic process:
Service manual
Bulletins
Digital multimeter (with a MIN/MAX feature)
Tech II and Tech II upload function
Circuit testing tools (including connector kits/
harnesses and jumper wires)
Ex perience
Intermittent problem solving simulation methods
Customer complaint check sheet
Symptom Simulation Tests
1. Vibration
This method is useful when the customer complaint
analysis indicates that the problem occurs when the
vehicle/system undergoes some form of vibration.
For connectors and wire harness, slightly shake
vertically and horizontally. Inspect the connector joint
and body for damage. Also, tapping lightly along a
suspected circuit may be helpful.For parts and sensors, apply slight vibration to the part
with a light tap of the finger while monitoring the system
for a malfunction.
2. Heat
This method is important when the complaint suggests
that the problem occurs in a heated environment. Apply
moderate heat to the component with a hair drier or
similar tool while monitoring the system for a
malfunction.
CA UTION: Care must be take to avoid overheating
the component.
3. Water and Moisture
This method may be used when the complaint suggests
that the malfunction occurs on a rainy day or under
conditions of high humidity. In this case, apply water in a
light spray on the vehicle to duplicate the problem.
CA UTION: Care must be take to avoid directly
exposing electrical connections to water.
4. Electrical loads
This method involves turning systems ON (such as the
blower, lights or rear window defogger) to create a load
on the vehicle electrical system at the same time you
are monitoring the suspect circuit/component.
5e. Vehicle Operates as Designed
This condition refers to instances where a system
operating as designed is perceived to be unsatisfactory
or undesirable. In general, this is due to:
A lack of understanding by the customer
A conflict between customer ex pectations and
vehicle design intent
A system performance that is unacceptable to the
customer
What you should do
You can verify that a system is operating as designed
by:
Reviewing service manual functional/diagnostic
checks
Ex amining bulletins and other service information for
supplementary information
Compare system operation to an identical vehicle
If the condition is due to a customer misunderstanding
or a conflict between customer ex pectation and system
operation, you should ex plain the system operation to
the customer.
If the complaint is due to a case of unsatisfactory
system performance, you should contact Technical
Assistance for the latest information.
What resources you should use
Whenever possible, you should use the following
resources to facilitate the diagnostic process:

3.5L ENGINE DRIVEABILITY AND EMISSIONS 6E-31

RELAY AND FUSE BOX LOCATION (LHD & RHD)
RELAY & FUSE BOX

RELAY
NO. Relay name
X-1 RELAY; TAIL LIGHT
X-2 RELAY; FUEL PUMP
X-3 RELAY; HORN
X-4 RELAY; DIMMER
X-5 RELAY; FOG LIGHT
X-6 RELAY; STARTER
X-7 RELAY; COND, FAN
X-8 RELAY;

X-9 RELAY; HAZARD-RH
X-10 RELAY; HAZARD-LH
X-11 RELAY; HEATER
X-12 RELAY; HEAD LIGHT
X-13 RELAY; ECM MAIN
X-14 RELAY; A/C COMP
X-15 RELAY; THERMO


FUSE





 
 
 
 


  
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