2002 ISUZU AXIOM air conditioning

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±99
Chart 2: Ambient Sensor
D08R200030
StepActionValue(s)Ye sNo
1Disconnect ambient sensor connector. (No.C±19)
Is performance of the ambient sensor normal? (Refer
to the
later section on ªIndividual inspectionº)ÐGo to Step 2
Replace the
ambient
sensor
2Connect the ambient sensor connector.
Is resistance between the harness side connector
No.I20±2 and No.I20±11 normal?Refer to the
later section
on ªIndividual
inspectionº
Go to Step 4Go to Step 3
3Repair an open circuit between terminal No.I20±2 and
No.C19±1 or No.I20±11 and No.C19±2.
Is the action complete?
ÐVerify repairÐ
4Replace the auto air conditioner control unit.
Is the action complete?
ÐVerify repairÐ

1A±100
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart 3: Sun Sensor
D08R200059
StepActionValue(s)Ye sNo
1Disconnect the sun sensor connector. (No.I±15)
Is performance of the sun sensor normal? (Refer to the
later section on individual inspection)ÐGo to Step 2
Replace the
sun sensor.
2Is there continuity between the harness side connector
terminal No.I20±3 and No.I15±2?
ÐGo to Step 4Go to Step 4
3Repair an open circuit between terminal No.I20±3 and
No.I15±2.
Is the action complete?
ÐGo to Step 2Ð
4Is there continuity between the harness side connector
terminal No.I20±11 and No.I15±1?
ÐGo to Step 6Go to Step 5
5Repair an open circuit between terminal No.I20±11 and
I15±1.
Is the action complete?
ÐGo to Step 4Ð
6Replace the auto air conditioner control unit.
Is the action complete?
ÐVerify repairÐ

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±101
Inspection of the Intake Actuator System
D08R200060

1A±102
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
ConditionPossible causeCorrection
Does not work at allÐRefer to Chart A
Control failureÐRefer to Chart B
Chart A: Does Not Work At All
StepActionValue(s)Ye sNo
1Is the fuse FL±1 normal?
ÐGo to Step 2
Replace the
fuse
2Is the fuse F±7 normal?
ÐGo to Step 3
Replace the
fuse
3Is the relay X±1 normal?
ÐGo to Step 4
Replace the
relay
4Turn on the ignition switch. (the engine is run.)
Is the battery voltage applied between the harness side
connector terminal No.C33±3 and ground?
Approx 12VGo to Step 6Go to Step 5
5Repair an open circuit between terminal No.C33±3 and
No.X1±1.
Is the action complete?
ÐGo to Step 4Ð
6Is the battery voltage applied between the harness side
connector terminal No.C33±4 and ground?
Approx 12VGo to Step 8Go to Step 7
7Replace the intake actuator motor.
Is the action complete?
ÐGo to Step 6Ð
8Is there continuity between the harness side connector
terminal No.I19±11 and No.C33±4?
ÐGo to Step 10Go to Step 9
9Repair an open circuit between No.I19±11 and C33±4.
Is the action complete?
ÐVerify repairÐ
10Replace the auto air conditioner control unit.
Is the action complete?
ÐVerify repairÐ

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±103
Chart B: Failure on the Intake Control
StepActionValue(s)Ye sNo
1Is the fuse No.F±7 normal?
ÐGo to Step 2
Replace the
fuse
2Is the relay No.X±1 normal?
ÐGo to Step 3
Replace the
relay
3Turn on the ignition switch. (the engine is run.)
Is the intake actuator stopped?
ÐGo to Step 5Go to Step 4
4Replace or repair the auto air conditioner control unit.
Is the action complete?
ÐVerify repairÐ
5Is there continuity between the harness side connector
terminal No.C33±5 and No.I20±11?
ÐGo to Step 7Go to Step 6
6Repair an open circuit between terminal No.C33±5 and
No.I20±11.
Is the action complete?
ÐGo to Step 5Ð
7Is there continuity between the harness side connector
terminal No.C33±6 and No.I20±12?
ÐGo to Step 9Go to Step 8
8Repair an open circuit between terminal No.C33±6 and
No.I20±12.
Is the action complete?
ÐGo to Step 7Ð
9Is there continuity between the harness side connector
terminal No.C33±1 and No.I20±13?
ÐGo to Step 11Go to Step 10
10Repair an open circuit between terminal No.C33±1 and
I20-13.
Is the action complete?
ÐGo to Step 9Ð
11Is there continuity between the harness side connector
terminal No.C33±2 and No.I20±14?
ÐGo to Step 13Go to Step 12
12Repair an open circuit between harness No.C33±2 and
No.I20±14.
Is the action complete?
ÐGo to Step 11Ð
131. Disconnect the intake actuator connector No.C33.
2. Is the battery voltage applied between harness side
connector terminal
No.C33±6 and ground?
No.C33±2 and ground?
No.C33±1 and ground?
ÐGo to Step 14Go to Step 15
14Replace or repair the intake actuator.
Is the action complete?
ÐVerify repairÐ
15Replace or repair the air conditioner control unit.
Is the action complete?
ÐVerify repairÐ

1A±104
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Inspection of the Mix Actuator System
D08R200032
ConditionPossible causeCorrection
Does not work at allÐRefer to Chart A
Control failureÐRefer to Chart B

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±105
Chart A: Does Not work At All
StepActionValue(s)Ye sNo
11. Turn on the ignition switch (the engine is run).
2. Disconnect the mix actuator connector (C±43).
3. Short-circuit the chassis harness side connector
terminal No.C43±3 and No.C43±7.
4. Using the temperature control switch, select 18
C
(65
F) for the temperature.
Is the battery voltage applied on a regular interval basis
between the harness side connector terminal
No.C43±6 (-) and No.C43±8 (+)?
ÐGo to Step 3Go to Step 2
2Replace the auto air conditioner control unit.
ÐVarify repairÐ
3Using the temperature control switch, select 32
C
(90
F) for the temperature.
Is the battery voltage applied on a regular interval basis
between the harness side connector terminal
No.C43±6 (+) and No.C43±8 (-)?
ÐGo to Step 5Go to Step 4
4Replace the auto air conditioner control unit.
ÐVerify repairÐ
5Is there continuity between the harness side connector
terminal No.I19±6 and No.C43±6?
ÐGo to Step 7Go to Step 6
6Repair an open circuit between terminal No.I19±6 and
No.C43±6.
Is the action complete?
ÐGo to Step 5Ð
7
Is there continuity between the harness side connector
terminal No.I19±5 and No.C43±8?
ÐGo to Step 9Go to Step 8
8Repair an open circuit between terminal No.I19±5 and
No.C43±8.
Is the action complete?
ÐVerify repairÐ
9Replace the mix actuator.
Is the action complete?
ÐVerify repairÐ

1A±106
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart B: Mix Actuator Control Failure
StepActionValue(s)Ye sNo
1Turn the ignition switch (the engine is run).
Dose the mix actuator fully stroke when 32
C (90
F)
and 18
C (65
F) of the temperature control switch?
ÐGo to Step 3Go to Step 2
2Repair or replace the air mix door or the link unit.
Is the action complete?
ÐVarify repairÐ
3Is there continuity between the harness side connector
terminal No.C43±3 and No.I20±11?
ÐGo to Step 5Go to Step 4
4Repair an open circuit between terminal No.C43±3 and
No.I20±11.
Is the action complete?
ÐGo to Step 3Ð
5Is there continuity between harness side connector
terminal No.C43±7 and No.I20±5?
ÐGo to Step 7Go to Step 6
6Repair an open circuit between terminal No.C43±7 and
No.I20±5.
Is the action complete?
ÐGo to Step 5Ð
7Is there continuity between the harness side connector
terminal No.C43±2 and No.I20±15?
ÐGo to Step 9Go to Step 8
8Repair an open circuit between terminal No.C43±2 and
No.I20±15.
Is the action complete?
ÐGo to Step 7Ð
9Is sum of the voltage between the following chassis
harness side connector terminals approximately 5V?
No.I20±15 and No.I20±5, No.I20±5 and No.I20±11
ÐGo to Step 11Go to Step 10
10Replace the actuator.
Is the action complete?
ÐVerify repairÐ
11Replace the auto air conditioner control unit.
Is the action complete?
ÐVerify repairÐ