4JH1 ISUZU KB P190 2007 Workshop Repair Manual

8A-360 ELECTRICAL-BODY AND CHASSIS






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.

4JJ1-TC/4JA1T(L)/4JH1-TC



RTW 780SH000401

rpm
Indication Permissible Range
750 700-870
2,000 1915-2085
3,000 2915-3085
4,000 3950-4120
5,000 4950-5120

4JK1-TC



RTW 780SH000501


Tachometer rpm
Indication Permissible Range
750 700-870
2,000 1915-2085
3,000 2915-3085
4,000 3950-4120
5,000 4950-5120

C24SE



RTW 78ASH001301


rpm
Indication Permissible Range
1,000 950-1150
2,000 1900-2100
3,000 2900-3100
4,000 3900-4100
5,000 4900-5100
6,000 5950-6150


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8A-368 ELECTRICAL-BODY AND CHASSIS
140R300007
Thermo Unit Inspection
INSPECTION
Use a circuit tester to measure the thermo unit resistance.
Replace the unit when the result of inspection is found
abnormal.

Temperature
Check
condition 60
°C
(140 °F) 115
°C
(239 °F)
Resistance
value ( Ω)
168
±3.5 +2.5
30.9 –2.0
041R300002


Fuel Gauge Unit Inspection
Measure the fuel gauge unit resistance between the connector
terminals 2
F2 and 3 F2 while shifting the float from “E”
to “F” point.
Fuel Tank Resistance
Level Float position
mm Standard resistance
Ω
F (B) 217.5 +2.2
17 –0.8
106.6
(4JJ1-TC/4JK1-TC)
105.1
(C24SE, 4JA1T(L)) 1/2 (A)
112.8
(4JH1-TC) 45
± 4.5
E (C) 16.2 120
± 2.0


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ELECTRICAL-BODY AND CHASSIS 8A-375

PARTS LOCATION


4JH1-TC



4JA1-L



RTW 78AXF049401 & RTW 78AMF001101

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ELECTRICAL-BODY AND CHASSIS 8A-385

CIRCUIT DIAGRAM 4JH1-TC


RTW 78AXF007901

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ELECTRICAL-BODY AND CHASSIS 8A-405

CIRCUIT DIAGRAM 4JH1 (LHD) STD TYPE


RTW 78AXF013801

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8A-406 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JH1 (LHD) WITHOUT ANTI THEFT G.EXP TYPE

RTW 78AXF013701

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8A-426 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JJ1-TC/4JK1-TC 4JH1-TC G.EXP


RTW 78AXF028101

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8A-458 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JH1-TC (LHD) Sheet 1/2




RTW 78AXF010401

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ELECTRICAL-BODY AND CHASSIS 8A-459

CIRCUIT DIAGRAM 4JH1-TC (LHD) Sheet 2/2








RTW 78AXF010501

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ELECTRICAL-BODY AND CHASSIS 8A-471

CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC / 4JH1-TC (LHD)


RTW 78AXF028401

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