2002 ISUZU AXIOM Service Repair Manual

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±95
STEP 3: Sensor Output Check
865R200035

1A±96
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
STEP 4: Operation Check
865R200032

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±97
Inspection By Failed Location
Inspection of the Sensors
When the self-diagnosis function has determined that
trouble is present on the sensors, check them according
to the following flow chart.
F01RY00005

1A±98
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart 1: In Car Sensor
D08R200029
StepActionValue(s)Ye sNo
1Disconnect the in car sensor connector. (No.I-17)
Is performance of the sensor normal? (Refer to the
later section on ªIndividual Inspectionº)ÐGo to Step 2
Replace the
in car sensor
2Is there continuity between the harness side connector
No.I20±1 and No.I17±3?
ÐGo to Step 4Go to Step 3
3Repair an open circuit between terminal No.I20±1 and
No.I17±3.
Is the action complete?
ÐGo to Step 2Ð
4Is there continuity between the harness side connector
No.I20±11 and No.I17±4?
ÐGo to Step 6Go to Step 5
5Repair an open circuit between terminal No.I20±11 and
No.I17±4.
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±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