engine ISUZU KB P190 2007 Workshop Repair Manual

ELECTRICAL-BODY AND CHASSIS 8A-111
ENGINE CONTROL MODULE (ECM)
PARTS LOCATION (RHD)




RTW 78AXF036301 & RTW 78AXF042501

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8A-140 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION

ECM (ENGINE CONTROL MODULE);
C24SE

Removal
1. Lift both the ECM harness connector locking levers and
remove the two harness connectors form the ECM.
2. Remove the four socket head screws securing the ECM to the mounting bracket.
3. Remove the ECM from the engine compartment .


4. Pull out the ECM.
5. Disconnect both red and tan connectors.
Refer to the Section 6E-ENGINE of this Manual.
IMPORTANT: The replacement ECM must be programmed.
“SPS (Service Programming System) and immobilizer
programming (if equipped) is/are necessary”





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



Connector
Be absolutely sure that ECM is securely connected.
This will prevent a poor contact and open circuit.



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ELECTRICAL-BODY AND CHASSIS 8A-141
REMOVAL AND INSTALLATION

ECM (ENGINE CONTROL MODULE);
4JH1-TC


Removal
1. Remove the passenger side front seat – refer to Section 10
CAB.
2. Remove the passenger side front door opening scuff plate.
3. Raise the carpet to gain access to the four hex-head bolts securing the ECM and ECM cover to the floor pan .
4. Remove the four hex-head bolts.
5. Pull the two harness connector locks away from the harness connectors and then remove the connectors form
the ECM.
6. Remove the ECM from the vehicle.
Refer to the Section 6E-ENGINE of this Manual.
IMPORTANT: The replacement ECM must be programmed.
“SPS (Service Programming System) and immobilizer
programming (if equipped) is/are necessary”







Installation
Follow the removal procedure in the reverse order to install the
ECM.
Torque passenger seat securing bolts to the specified value –
refer to Section 10 CAB
Pay close attention to the important points mentioned in the
following paragraphs.



Connector
Be absolutely sure that ECM is securely connected.
This will prevent a poor contact and open circuit.



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8A-142 ELECTRICAL-BODY AND CHASSIS
REMOVAL AND INSTALLATION



FUEL GAUGE UNIT AND SENDER
ASSEMBLY
Removal
1. Remove the fuel gauge unit and sender assembly.
Refer to the “ENGINE FUEL” Section 6C of this Manual.





Installation
To install the fuel gauge unit and sender assembly, follow the
removal procedure in reverse order.
Pay close attention to the important points mentioned in the
following paragraphs.



Rubber Seal
Be absolutely sure that the fuel sender rubber seals are
correctly seated.

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




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ELECTRICAL-BODY AND CHASSIS 8A-283
Windshield Washer Spray
Be sure that the engine hood is completely closed before
checking the windshield washer spray adjustment.
W indshield W asher Spray Position: Refer to the illustration.

RTW 38DSF000201



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



Note:
Windshield wiper arm and blade assembly configurations
are different for the right-hand and left-hand side of the
vehicle.
Be careful not to confuse the right-hand and left-hand side
assemblies.



This illustration is based on RHD model
WASHER TANK MOTOR
Removal
1. Remove the head light.
• Refer to the head light in this manual.
2. Remove the inner liner.
3. Pull out the clip washer filler.
4. Remove the washer tank nuts.


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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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8A-352 ELECTRICAL-BODY AND CHASSIS
2. When the parking brake lever is released, the indicator light does not go off

Checkpoint Trouble Cause Countermeasure

Adjust the SW . installation
position or replace the parking
brake SW . Incorrect the parking brake
SW . adjustment or parking
brake SW . faulty

NG
Thermo unit malfunction
Replace the brake fluid level
SW ., or repair a short circuit
between the parking brake
SW . connector 1
C39,
1
R4 and 4 B23 (C24SE :
9
B23 ) or the brake fluid
level SW . connector 2
C37
and 4
B23 (C24SE : 9

B23 )
Check to see if the indicator
light goes off when the parking
brake SW . connector 1
C39
(stick type), 1
R4 (lever
type) is disconnected
Brake fluid level SW . faulty or
short circuit

NG
OK

Parking brake SW . installation
position and function



3. Oil pressure warning light does not go off while engine is running


Refer to ENGINE Section

Refer to ENGINE Section

NG Thermo unit malfunction
Check to see the warning light
goes off when the oil pressure
SW . connector
1
E1 is disconnected or
when the PIM (Oil pressure)
connector 6
B96 (HFV6) is
disconnected
Repair a short circuit between
1
E1 and 39 B23
(C24SE : 17
B24) or 6
B96 and 39 B23 (HFV6)

Short circuit

NG
OK

Replace the oil pressure SW .

Continuity between the oil
pressure SW . connector
1
E1 (HFV6 : 6 B96 )and
the body ground when the
engine is operating

Oil pressure SW . faulty

NG
OK

Engine oil pressure





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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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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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