2007 ISUZU KB P190 coolant temperature

ELECTRICAL-BODY AND CHASSIS 8A-347
ENGINE COOLANT TEMPERATURE GAUGE (4JJ1-TC/4JK1-TC)
Refer to “Inspection and Repair” in this Manual for a detailed description of the coolant temperature gauge self-
diagnosis procedure.

1. No engine coolant temperature indicates at all

Checkpoint Trouble Cause Countermeasure


Replace the engine coolant
temperature sensor

Engine coolant temperature
sensor malfunction

NG


Replace the meter assembly

Gauge function
1. Disconnect the sensor connector then connect
3.4W bulb to wire harness
side with ground
2. Check indicating point when starter SW . is ON
position (Temperature
should indicate)

Gauge malfunction


Repair open circuit or
connector contact

Continuity between 3
E41
and 16
B23


Open circuit or poor connector
contact

NG
NG
OK
OK
Engine coolant temperature
sensor continuity between
connector 3
E41 and the
ground



2. Engine coolant temperature gauge incorrect readings in all ranges


Replace the sensor

The sensor malfunction

NG

Engine coolant temperature
sensor resistance between
connector 3
E41 and the
ground when disconnecting
the connector (Specified
resistance should indicate)


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ELECTRICAL-BODY AND CHASSIS 8A-365




Connector
Ter- No.

minal No.
B23
1 Power ground
2 Cruise main
3 Charge
4 Brake
5 ABS control unit
6 Fuel consumption
7 Tachometer pulse
8 Speedometer pulse
9 Rheostat
10 Taillight relay
11 -
12 -
13 Ambient temperature sensor
14 Seat belt
15 Key remind switch
16 Engine coolant temperature sensor
17 Fuel gauge unit and sender
18 Fuel level
19 Sedimenter
20 Door ajar
21 Power drive
22 3rd start
23 Fuel filter
24 Cruise set
25 Check trans
26 SVS
27 4W D
28 4W D - L
29 A/T oil temperature
30 Check 4W D
31 CAN (+)
32 CAN (-)
33 Turn signal - LH
34 ABS
35 Glow
36 -
37 Hi – beam (+)
38 Check engine
39 Oil pressure
40 SRS control unit

Connector
Ter- No.
minal No.
B24
1 Signal ground
2 SRS ground
3 A/T shift indicator “3”
4 A/T shift indicator “D”
5 A/T shift indicator “N”
6 A/T shift indicator “R”
7 A/T shift indicator “P”
8 Ignition
9 Ambient temperature sensor
10 RR fog light
11 FRT fog light
12 A/T shift indicator “2”
13 A/T shift indicator “L”
14 Turn signal - RH
15 Door SW - driver
16 Power source



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8A-366 ELECTRICAL-BODY AND CHASSIS


Connector No. B23 SOUTH
AFRICA SAUDI
ARABIA ISRAEL EUROPE OTHER
Terminal Connector place
4JJ1-TC HFV6 4JA1T(L) HFV6 4JJ1-TC HFV6 RHD LHD G.EXP
RHD 4JJ1-TC
C24SE
AUSTRALIAHFV6AUSTRALIA
1
Power ground
2 Cruise main
―
― ― ― ― ― ― ― ― ―
3
Charge
4 Brake
5 ABS control unit
6 Fuel consumption ―
―
―
―
―
7 Tachometer pulse
8 Speedometer pulse
9 Rheostat
10 Taillight relay
11 ―

― ― ― ― ― ― ― ― ― ― ― ―
12 ―

― ― ― ― ― ― ― ― ― ― ― ―
13 Ambient
temperature sensor ―

14 Seat belt
15 Key remind switch
16 Engine coolant
temperature sensor
17 Fuel gauge unit and
sender
18 Fuel level
― ― ― ― ― ― ― ― ― ― ― ―
19 Sedimenter ―
―
―
―
―
20 Door ajar
― ― ― ― ― ― ― ― ― ― ―
21 Power drive ―

22 3rd start ―

23 Fuel filter ―
―
―
―
―
24 Cruise set
― ―
―
―
―
―
25 Check trans ―

26 SVS ―

27 4W D ―

28 4W D - L ―

29 A/T oil temperature ―

30 Check 4W D ―

31 CAN (+)
― ― ―
―
―
― ― ―
32
CAN (-)
― ― ―
―
―
― ― ―
33
Turn signal - LH
34 ABS
35 Glow ―
―
―
―
―
36 ―

― ― ― ― ― ― ― ― ― ― ― ―
37 Hi – beam (+)
38 Check engine
39 Oil pressure
40 SRS control unit


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8A-620 ELECTRICAL-BODY AND CHASSIS


No. Connector face No. Connector face
E19



Blue
Thermo meter unit E35



BlackMotor actuator
E20
~
E21 NOT USED E36




TACHO sensor
E22



Brown
TPS 1 main E37



Fuel cut solenoid
E23



Gray
TPS 2 main E38



BlackIntake throttle DC motor position
E24
~
E26 NOT USED E39



Black
Camshaft position (CAM) sensor
E27


Gray
Fuel temp sensor E40



BlackBarometric sensor
E28
~
E29 NOT USED E41
(4JH1-TC)


Black
W ater temperature sensor
E30


Gray
A/T speed sensor E41
(
4JJ1-TC)


Black
Engine coolant temperature sensor
E31


Gray
Turbine sensor E42


Natural greenBackup light switch
E32
~
E34 NOT USED E43


Natural green
Backup light switch


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