switch ISUZU TF SERIES 2004 Workshop Manual

HEATER AND AIR CONDITIONING 1-93



YES


Disconnect the A/C switch.


Is there battery voltage between the chassis side
harness connector terminal No. 6 (B-57) and ground (C-
109)?
Open circuit between the engine room
harness connector terminal No. 1 (C-55) or
(cooler only) the short connector No. 3 (B-
79) and ground (C-109).
NO YES

Is there continuity between the engine room harness
connector (cooler only) terminal No. 4 (C-55) and the
chassis side harness connector terminal No. 11 (B-57).
Open circuit between the engine room
harness connector (cooler only) terminal
No. 4 (C-55) and the chassis side harness
connector terminal No. 11 (B-57).
NO YES

Is there battery voltage between the chassis side
harness connector terminal No. 10 (B-57) and ground?
Open circuit between the chassis side
harness connector No. 1 (B-79) and
chassis side harness connector terminal
No. 10 (B-57).
NO
YES


Is the electronic themostat OK? Open circuit between the No. EB-13 fuse
and the chassis side harness connector
No. 6 (B-57).
NO
YES

Defective ECM Replace electronic thermostat
NO

HEATER AND AIR CONDITIONING 1-95

MAGNETIC CLUTCH DOES NOT RUN


Replace
YES

Are the A/C thermo (X-15), heater & A/C (X-11)
and A/C compressor (X-14) relay OK?


Are the No. SBF 8 fuse (30A) and the No. EB-13
(10A) fuses OK
YES

Is the pressure switch (C-24) OK?
YES


Are the A/C switch (B-57) and the fan switch (B-13)
OK?
NO
YES


Is there continuity between the engine harness
connector terminal No.1 (E-2) and engine room
harness connector terminal No.2 (X-14)?


Disconnect the A/C compressor relay.


Turn the ignition switch "ON" (Engine is running)

A/C switch and fan control knob (fan switch "ON")
NO
Replace
NO
Defective switch or insufficient
refrigerant
NO
NO
Does the magnetic clutch
operate?
YES
Replace


Disconnect the magnetic clutch connector.


Is there battery voltage between the engine room
harness connector terminal No.1 (E-2) and ground?
Defective compressor
YESNO
Defective magnetic clutch

1-96 HEATER AND AIR CONDITIONING




Open circuit between the engine
harness connector terminal No.1 (E-
13) and engine room harness
connector terminal No.2 (X-14).
YES


Is there battery voltage between the engine room
harness connector terminal No.1 (X-14) and
ground?
YES


Disconnect the A/C thermo relay.
YES

Is there continuity between the ECM harness
connector terminal No. 11 (E-61) and engine
room harness connector terminal No.4 (X-14)?
NO
Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No.1 (X-14).
NO
Open circuit between the No.EB-13
fuse and engine room harness
connector terminal No. 3 (X-14).
NO

Is there battery voltage the engine room harness
connector terminal No.3 (X-14) and ground?
YES


Is there continuity between the ECM harness
connector terminal No.31 (E-61) and engine
room harness connector terminal No.1 (X-15)? Open circuit between the ECM
harness connector No. 11 (E-61) and
engine room harness connector
terminal No. 4 (X-14).
NO
YES

Is there battery voltage between the engine room
harness connector terminal No.3 (X-15) and
ground?
Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No. 2 (X-15).
NO
YES

Is there continuity between the engine room harness
connector terminal No. 4 (X-15) and the engine room
harness connector terminal No. 1 (C-24)?
Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No. 3 (X-15).
NO


Disconnect the ECM harness connector.

Disconnect the pressure switch.

1-98 HEATER AND AIR CONDITIONING



YES

Disconnect the A/C switch.

Is there battery voltage between the chassis side
harness connector terminal No. 6 (B-57) and ground (C-
109)?
Open circuit between the chassis side
harness connector No. 1 (B-79) and
chassis side harness connector terminal
No. 10 (B-57).
NO
YES


Is the electronic themostat OK? Open circuit between the No. EB-13 fuse
and the chassis side harness connector
No. 6 (B-57).
NO
YES


Defective ECM Replace electronic thermostat
NO

1-100 HEATER AND AIR CONDITIONING



Replace
YES


Are the A/C thermo (X-15), heater & A/C (X-11)
and A/C compressor (X-14) relay OK?


Are the No. SBF 8 fuse (30A) and the No. EB-13
(10A) fuses OK?
YES


Is the pressure switch (C-24) OK?
YES


Are the A/C switch (B-57) and the fan switch (B-13)
OK?
NO
YES


Is there continuity between the engine harness
connector terminal No.1 (E-2) and engine room
harness connector terminal No.2 (X-14)?

Disconnect the A/C compressor relay.


Turn the ignition switch "ON" (Engine is running)


A/C switch and fan control knob (fan switch "ON")
NO
Replace
NO
Defective switch or insufficient
refrigerant
NO
NO
Does the magnetic clutch
operate?
YES
Replace


Disconnect the magnetic clutch connector.

Is there battery voltage between the engine room
harness connector terminal No.1 (E-2) and ground?
Defective compressor
YESNO
Defective magnetic clutch

HEATER AND AIR CONDITIONING 1-101



Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No.1 (X-14).
NO
YES


Is there battery voltage between the engine room
harness connector terminal No.1 (X-14) and
ground?
YES


Disconnect the A/C thermo relay.
YES


Is there continuity between the ECM harness
connector terminal No. 14 (C-56) and engine
room harness connector terminal No.4 (X-14)?
Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No. 3 (X-14).
NO


Is there battery voltage the engine room harness
connector terminal No.3 (X-14) and ground?
YES


Is there continuity between the ECM harness
connector terminal No. 26 (C-56) and engine
room harness connector terminal No. 1 (X-15)?Open circuit between the ECM
harness connector No.14 (C-56) and
engine room harness connector
terminal No. 4 (X-14).
NO
YES

Is there battery voltage between the engine room
harness connector terminal No. 2 (X-15) and
ground?
Open circuit between the ECM
harness connector No. 26 (C-56) and
the engine room harness connector
terminal No. 1 (X-15).
NO
YES


Is there continuity between the engine room
harness connector terminal No. 3 (X-15) and the
engine room harness connector terminal No. 1 (C-
24
).
Open circuit between the No. EB-13
fuse and engine room harness
connector terminal No. 4 (X-15).
NO


Disconnect the ECM harness connector.

Disconnect the pressure switch?
Open circuit between the engine harness
connector terminal No.1 (E-3) and engine
room harness connector terminal No.2 (X-
14).
NO

1-102 HEATER AND AIR CONDITIONING



YES


Disconnect the condenser fan relay connector condenser
fan.
YES

Is there battery voltage between the engine room
harness connector terminal NO. 3 (C-24) and ground?Open circuit between the condenser fan
relay No.3 (X-7) and engine room harness
connector terminal No. 4 (X-14).
NO

Is there continuity between the relay terminal No. 3 (X-7)
and engine room harness connector terminal No.4 (C-
24)?
YES
Open circuit between the No. EB-13 fuse
and engine room harness connector
terminal No. 4 (C-24).
NO
YES


Is there continuity between the engine room harness
connector terminal No. 2 (C-55) and the engine room
harness connector terminal No. 2 (C-24)?
Open circuit between the engine room
harness connector terminal No. 4 (CX-15)
and the engine room harness connector
terminal No. 1 (C-24).
NO


Disconnect the pressure switch.


Is there continuity between the engine room harness
connector terminal No. 4 (X-15) and the engine room
harness connector terminal No. 1 (C-24).
Open circuit between the No. EB-13 fuse
and engine room harness connector
terminal No. 2 (X-15).
NO


Connect the A/C thermo relay connector.


Disconnect the electronic thermostat.

HEATER AND AIR CONDITIONING 1-103



YES


Disconnect the A/C switch.


Is there battery voltage between the chassis side
harness connector terminal No. 6 (B-57) and ground?
Open circuit between the engine room
harness connector terminal No. 2 (C-24)
and the engine room harness connector
terminal No. 2 (C-55).
NO YES


Is there battery voltage between the engine room
harness connector terminal No. 3 (C-55) and ground?
Open circuit between the No. EB-13 fuse
and engine room harness connector
terminal No. 3 (C-55).
NO YES


Is there continuity between the engine room harness
connector terminal No. 1 (C-55) and ground (C-109)?
Open circuit between the engine room
harness connector No. 1 (C-55) and ground
(C-109).
NO
YES


Is the electronic themostat OK? Open circuit between the No. EB-13 fuse
and the chassis side harness connector
No. 4 (C-55).
NO
YES


Defective ECM Replace electronic thermostat
NO

7B-8 MSG MODEL


Exhaust Pipe
1. Remove the exhaust pipe bracket from the transmission
case.
2. Remove the exhaust pipe.





Rear Propeller Shaft (Single Shaft Type)
1. Remove the propeller shaft flange yoke at the drive pinion
side

1.
2. Remove the propeller shaft from the transmission main
shaft spline

2.





Rear Propeller Shaft (Dual Shaft Type)
1. Apply setting marks to the 2nd propeller shaft flange yoke.
This will prevent mispositioning during the installation
procedure.
2. Remove the 2nd propeller shaft flange yoke bolts at the
drive pinion side

1.
3. Remove the center bearing retainer bolts

2 .
4. Remove the 1st propeller shaft with the center bearing and
the 2nd propeller shaft.
Pull the 1st propeller shaft toward the rear of the vehicle
until the spline yoke is free of the transmission main shaft.



Harness Connector
Disconnect the back up light switch connector and the
speedometer sensor connector.




Slave Cylinder
Remove the slave cylinder from the transmission case.

MSG MODEL 7B-13





Starter Motor
1. Install the starter motor to the engine rear plate.
2. Tighten the starter motor bolts to the specified torque.
Starter Motor Torque N

m (kgf

m/lb

ft)
78 (8.0 / 58)




Slave Cylinder
Install the slave cylinder to the transmission case.
Slave Cylinder Bolt Torque N

m (kgf

m/lb

ft
)
78 (8.0 / 58)

Harness Connector
Connect the back up light switch connector and speedometer
sensor connector.



Rear Propeller Shaft (Single Shaft Type)
1. Insert the splined yoke 1 with the propeller shaft into the
transmission main shaft spline
2 .
2. Install the propeller shaft flange yoke
3 to the drive pinion
side.
3. Tighten the propeller shaft flange yoke bolt to the specified
torque.
Propeller Shaft Flange Yoke Bolt Torque N
m (kgf
m/lb
ft)
M8 : 35.3 (3.6 / 26)
M10 : 62.7 (6.4 / 46.3)



Rear Propeller Shaft (Dual Shaft Type)
1. Place the center bearing and retainer 1 together with the
1st propeller shaft
2 and 2nd propeller shaft 7 on the No.4
crossmember
3.
2. Insert the splined yoke
4into the transmission main shaft
spline
5.
3. Tighten the center bearing retainer bolts
6 to the specified
torque.
Center Bearing Retainer Bolt Torque N

m (kgf

m/lb

ft)
60.8 (6.2 / 44.8)



4. Connect the 2nd propeller shaft
7 and drive pinion side 8.
Be sure to align the setting marks applied at disassembly.
5. Tighten the coupling bolts to the specified torque.
Propeller Shaft Flange Yoke Bolt
Torque N

m (kgf

m/lb

ft)
M8 : 35.3 (3.6 / 26)
M10 : 62.7 (6.4 / 46.3)