Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Instruction - page 33
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–103
Chart B: Failure on the Intake Control
Step
Action
Value(s)
Yes
No
1
Is the fuse No.F–7 normal?
—
Go to
Step 2
Replace the
fuse
2
Is the relay No.X–1 normal?
—
Go to
Step 3
Replace the
relay
3
Turn on the ignition switch. (the engine is run.)
Is the intake actuator stopped?
—
Go to
Step 5
Go to
Step 4
4
Replace or repair the auto air conditioner control unit.
Is the action complete?
—
Verify repair
—
5
Is there continuity between the harness side connector
terminal No.C33–5 and No.I20–11?
—
Go to
Step 7
Go to
Step 6
6
Repair an open circuit between terminal No.C33–5 and
No.I20–11.
Is the action complete?
—
Go to
Step 5
—
7
Is there continuity between the harness side connector
terminal No.C33–6 and No.I20–12?
—
Go to
Step 9
Go to
Step 8
8
Repair an open circuit between terminal No.C33–6 and
No.I20–12.
Is the action complete?
—
Go to
Step 7
—
9
Is there continuity between the harness side connector
terminal No.C33–1 and No.I20–13?
—
Go to
Step 11
Go to
Step 10
10
Repair an open circuit between terminal No.C33–1 and
I20-13.
Is the action complete?
—
Go to
Step 9
—
11
Is there continuity between the harness side connector
terminal No.C33–2 and No.I20–14?
—
Go to
Step 13
Go to
Step 12
12
Repair an open circuit between harness No.C33–2 and
No.I20–14.
Is the action complete?
—
Go to
Step 11
—
13
1. 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?
—
Go to
Step 14
Go to
Step 15
14
Replace or repair the intake actuator.
Is the action complete?
—
Verify repair
—
15
Replace or repair the air conditioner control unit.
Is the action complete?
—
Verify repair
—
1A–104 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Inspection of the Mix Actuator System
D08R200032
Condition
Possible cause
Correction
Does not work at all
—
Refer to
Chart A
Control failure
—
Refer to
Chart B
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–105
Chart A: Does Not work At All
Step
Action
Value(s)
Yes
No
1
1. 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 (+)?
—
Go to
Step 3
Go to
Step 2
2
Replace the auto air conditioner control unit.
—
Varify repair
—
3
Using 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 (-)?
—
Go to
Step 5
Go to
Step 4
4
Replace the auto air conditioner control unit.
—
Verify repair
—
5
Is there continuity between the harness side connector
terminal No.I19–6 and No.C43–6?
—
Go to
Step 7
Go to
Step 6
6
Repair an open circuit between terminal No.I19–6 and
No.C43–6.
Is the action complete?
—
Go to
Step 5
—
7
Is there continuity between the harness side connector
terminal No.I19–5 and No.C43–8?
—
Go to
Step 9
Go to
Step 8
8
Repair an open circuit between terminal No.I19–5 and
No.C43–8.
Is the action complete?
—
Verify repair
—
9
Replace the mix actuator.
Is the action complete?
—
Verify repair
—
1A–106 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart B: Mix Actuator Control Failure
Step
Action
Value(s)
Yes
No
1
Turn 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?
—
Go to
Step 3
Go to
Step 2
2
Repair or replace the air mix door or the link unit.
Is the action complete?
—
Varify repair
—
3
Is there continuity between the harness side connector
terminal No.C43–3 and No.I20–11?
—
Go to
Step 5
Go to
Step 4
4
Repair an open circuit between terminal No.C43–3 and
No.I20–11.
Is the action complete?
—
Go to
Step 3
—
5
Is there continuity between harness side connector
terminal No.C43–7 and No.I20–5?
—
Go to
Step 7
Go to
Step 6
6
Repair an open circuit between terminal No.C43–7 and
No.I20–5.
Is the action complete?
—
Go to
Step 5
—
7
Is there continuity between the harness side connector
terminal No.C43–2 and No.I20–15?
—
Go to
Step 9
Go to
Step 8
8
Repair an open circuit between terminal No.C43–2 and
No.I20–15.
Is the action complete?
—
Go to
Step 7
—
9
Is 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
—
Go to
Step 11
Go to
Step 10
10
Replace the actuator.
Is the action complete?
—
Verify repair
—
11
Replace the auto air conditioner control unit.
Is the action complete?
—
Verify repair
—