ISUZU TF SERIES 2004 Workshop Manual

ELECTRICAL-BODY AND CHASSIS 8A-263



WARNING LIGHT BULB, INDICATOR
LIGHT BULB AND ILLUMINATION LIGHT
BULB
Removal
Turn the bulb socket counterclockwise and pull the bulb out.



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











FUEL TANK UNIT
Removal
Dismount the fuel tank first, then remove the fuel tank unit.
1. Remove the rear inner liner -LH

Remove the clip
2. Remove the filler neck.

Remove the screw
3. Remove the ground with cable.
4. Remove the fuel tank band.

T/M jack unit on the vehicle.

Disconnect fuel line quick connectors.
5. Remove the fuel tank unit from the fuel tank.

8A-264 ELECTRICAL-BODY AND CHASSIS
Installation

Rubber Seal
Be absolutely sure that the fuel tank unit rubber seal is
correctly seated.



Connector
Be absolutely sure that the fuel tank unit connector is securely
connected.
This will prevent a poor contact and an open circuit.



VEHICLE SPEED SENSOR (INSTALLED
ON THE TRANSMISSION)
Removal
1. Disconnect the connector.
2. Remove the vehicle speed sensor body by rotating it.







Installation
To Install, follow the removal steps in the reverse order, noting
the following point.
Tighten the vehicle speed sensor to the specified torque.
Vehicle Speed Sensor Tightening Torque Nm (kgfm/lb.ft)
25  4.9 (2.5  0.5/18  3.6)

ELECTRICAL-BODY AND CHASSIS 8A-265
INSPECTION AND REPAIR

Warning, indicator and illumination light position
Without tachometer (C24NE)



RTW38AXF026601

8A-266 ELECTRICAL-BODY AND CHASSIS

With Tachometer (6VE1)




RTW48AXF006201

ELECTRICAL-BODY AND CHASSIS 8A-267

With Tachometer (4JA1-TC / 4JH1-TC)



RTW48AXF006101

8A-268 ELECTRICAL-BODY AND CHASSIS

With Tachometer (4JA1-L)



RTW48AXF006001

ELECTRICAL-BODY AND CHASSIS 8A-269

SPEEDOMETER AND TACHOMETER
Speedometer On-Vehicle Inspection
Check the speedometer accuracy with a speedometer tester.
Carefully follow the tester manufacturer’s instructions.

Manual Transmission
RTW38DSH000201


Auto Transmission
RTW38DSH000101

km/h meter km/h

Permissible Range

Indication
G.EXP EC, SAUDI
ISRAEL, SA
20 17.5 - 22.5 20 – 25
40 37.5 - 42.5 40 – 45
60 57.5 - 62.5 60 – 65
80 77.5 - 82.5 80 – 85
100 97.6 - 103.4 99.8 – 105.6
120 117.6 - 123.4 119.8 – 125.6
140 137.6 - 143.4 139.8 – 145.6
160 157.2 - 163.8 159.4 - 166

Auto Transmission (mPH)





RTW48ASH000201

mPH meter km/h

Permissible Range
Indication
G.EXP UK
20 18.5 - 21.5 20 – 23
40 48.5 - 41.5 40 – 43
60 58.5 - 61.5 60 – 63
80 79.1 - 82.5 80 – 83.4
100 98.9 – 102.7 99.8 – 103.6







Tachometer On-Vehicle Inspection
1. Attach a tune-up tester to the engine.
2. Start the engine.
3. Compare the tachometer reading and the tester reading.
If the tachometer indication is outside the permissible
range, the tachometer must be replaced.
4. Gradually increase and decrease the engine speed.
Note the movement of the tachometer needle.
If the needle movement is sluggish, the tachometer must be
replaced.

8A-270 ELECTRICAL-BODY AND CHASSIS

RTW38DSH000401


6VE1 rpm

Indication Permissible Range
750 690-770
1,000 900-1,060
2,000 1,820-2,070
3,000 2,820-3,120
4,000 3,820-4,180
5,000 4,820-5,180
6,000 5,820-6,180
7,000 6,820-7,180

RTW38DSH000501

4JH1-TC rpm

Indication Permissible Range
750 690-810
2,000 1,875-2,125
3,000 2,850-3,150
4,000 3,820-4,180
5,000 4,820-5,180

ELECTRICAL-BODY AND CHASSIS 8A-271
Tachometer Off-Vehicle Inspection
Remove the tachometer from the meter assembly and
measure the resistance value and the current consumption
between each terminal.


SELF DIAGNOSTIC FUNCTION
Check that the speedometer, tachometer, fuel gauge, and
temperature gauge operate properly.

821R300033

Entering the self-diagnostic mode
1. Push in and hold the “Change Indicator and Reset” knob.
2. Turn the ignition ON.
3. When the LCD odometer turns ON, release the “Change
Indicator and Reset” knob.
4. Push in and release the “Change Indicator and Reset”knob
three times in quick succession.
The meter cluster is now in “Self-diagnostic” mode.
NOTE: Steps 2-4 must be performed within 7 seconds.
The meter cluster will not enter “Self-diagnostic”mode if any of
the following conditions occur:
1. The “Change Indicator and Reset” knob is not depressed
when the ignition is turned ON.
2. The “Change Indicator and Reset” knob is released within
600ms of turning the ignition ON.
3. The “Change Indicator and Reset” knob is not depressed
and released three times within 7 seconds.

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.