Opel Frontera UE. Manual - part 643

 

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Opel Frontera UE. Manual - part 643

 

 

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–129

Chart C: Fan Does Not Rotate In Any Mode Other Than MAX HI

Chart D: Fan Does Not Stop

Step

Action

Value(s)

Yes

No

Is the power transistor performance normal? (Refer to
the later section on “individual inspection")

Go to Step 2

Replace the 

power transistor

Is there continuity between the harness side
connector terminal No.B5–1 and No.B35–1, No.B5–1
and No.I44–17?

Go to Step 4

Go to Step 3

Repair an open circuit between terminal.
No.B5–1 and B35–1
No.B5–1 and I44–17
  

Go to Step 2

Is there continuity between the harness side
connector terminal No.B35–3 and ground (No.B–8)?

Go to Step 6

Go to Step 5

Repair an open circuit between terminal No.B35–3
and ground.
Is the action complete?

Go to Step 4

Is there continuity between the harness side
connector terminal No.B35–2 and No.I44–19?

Go to Step 8

Go to Step 7

Repair an open circuit between terminal No.B35–2
and No.I44–19.
Is the action complete?

Go to Step 6

Replace the auto air conditioner control unit.
Is the action complete?

Verify repair

Step

Action

Value(s)

Yes

No

1. Disconnect the max high relay, the power

transistor connector B–35 and the auto A/C
control unit connector I–44.

2. Turn on the ignition switch.

Does the blower motor stop?

Go to Step 3

Go to Step 2

Repair a short circuit between connector No.B5–1 and
No.B25–2, No.B5–1 and No.B35–1, or No.B5–1 and
I44–17.
Is the action complete?

Verify repair

Is the max high relay normal? (Refer to the later
section on “individual inspection".)

Go to Step 4

Replace the 

relay

Reinstall the max high relay.
Does the blower motor start operating?

Go to Step 6

Go to Step 5

Repair a short circuit between connector No.B25–3
and No.I20–12.
Is the action complete?

Go to Step 4

Is the power transistor normal? (Refer to the later
section on “individual inspection".)

Go to Step 7

Replace the 

power transistor

Reinstall the power transistor.
Does the blower motor start operating?

Replace the 

auto A/C control 

unit

1A–130

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Inspection of the Magnetic Clutch System

6VD1 Engine

D08RX226

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–131

Chart A: Magnetic Clutch Does Not work

Condition

Possible cause

Correction

Magnetic clutch does not work

Refer to Chart A

Step

Action

Value(s)

Yes

No

Is the fuse No.F–5 normal?

Go to Step 2

Replace the 

fuse

Is the relay No.X–4 (compressor relay) No.X–5 (A/C
thermo relay) and No.X–6 (heater relay) normal?

Go to Step 3

Replace the 

fuse

Is the thermo unit normal?

Go to Step 4

Replace the 

thermo unit

Is the pressure switch normal?

Go to Step 5

Replace the 

pressure switch

1. Turn the ignition switch on. (the engine is run.) 

2. Push the air conditioner switch on.

Is the battery voltage applied between the harness
side connector terminal No.E3–1 and the ground?

Go to Step 6

Go to Step 7

Repair or replace the magnetic clutch.
Is the action complete?

Verify repair

Is there continuity between the harness side
connector terminal No.X4–1 and No.E3–1?

Go to Step 9

Go to Step 8

Repair an open circuit between terminal No.X4–1 and
No.E3–1.
Is the action complete?

Go to Step 7

Is the battery voltage applied between the harness
side connector terminal No.X4–5 and ground, No.X4–
2 and ground?

Go to Step 11

Go to Step 10

10 

Repair an open circuit between terminal No.X4–5 and
fuse No.F–5, No.X4–2 and fuse No.F–5.
Is the action complete?

Go to Step 9

11 

Is the battery voltage applied between the harness
side connector terminal No.I44–18 and ground?

Go to Step 13

Go to Step 12

12 

Repair an open circuit between terminal No.I44–18
and No.X4–4.
Is the action complete?

Go to Step 11

13 

Is the battery voltage applied between the harness
side connector terminal No.C11–2 and ground?

Go to Step 15

Go to Step 14

14 

Repair an open circuit between terminal No.C11–2
and fuse No.F–5.
Is the action complete?

Go to Step 13

15 

Is the battery voltage applied between the harness
side connector terminal No.X5–2 and ground, No.X5–
5 and ground?

Go to Step 17

Go to Step 16

16 

Repair an open circuit between terminal No.X5–2 and
No.C11–1, No.X5–5 and fuse No.F–5.
Is the action complete?

Go to Step 15

17 

Is the battery voltage applied between the harness
side connector terminal No.I20–14 and ground?

Go to Step 19

Go to Step 18

18 

Repair an open circuit between terminal No.X5–4 and
I20–14.
Is the action complete?

Go to Step 17

1A–132

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Chart A: Magnetic Clutch Does Not work (Cont’d)

CAUTION:  There are conditions which air
conditioner system dose not operate except trouble
as follows.

1. The throttle is griater than 90%.

2. The ignition voltage is below 10.5 volts.

3. The engine speed greater than 4500 RPM for 5

seconds or 5400 RPM.

4. The engine coolant temperature (ECT) is greater

than 125

°°°°

C (257

°°°°

F).

5. The intake air temperature (IAT) is less than 5

°°°°

C

(41

°°°°

F).

6. The power steering pressure switch signals a high

pressure condition.

Step

Action

Value(s)

Yes

No

19 

Is there continuity between the harness side
connector terminal No.I44–4 and ground?

Go to Step 21

Go to Step 20

20 

Repair an open circuit between terminal No.I44–4 and
No.E19–1.
Is the action complete?

Go to Step 20

21 

Dose the thermo relay “ON" when connecting ground
to the harness connector terminal No.H17–5?

Go to Step 23

Go to Step 22

22 

Failure on the auto air conditioner control unit.
Is the action complete?

Verify repair

 

 

 

 

 

 

 

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