Opel Frontera UE. Manual - part 1250

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–121

Chart B: Failure on the Intake Control

Step

Action

Value(s)

Yes

No

1 

Is the fuse No.C–15 normal?

—

Go to Step 2

Replace the 

fuse

2 

Is the fuse No.F–5 normal?

—

Go to Step 3

Replace the 

fuse

3 

Is the relay No.X–1 normal?

—

Go to Step 4

Replace the 

relay

4 

Turn on the ignition switch. (the engine is run.)
Is the intake actuator stopped?

—

Go to Step 6

Go to Step 5

5 

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

—

Verify repair

—

6 

Is there continuity between the harness side
connector terminal No.C65–5 and No.I44–11?

—

Go to Step 8

Go to Step 7

7 

Repair an open circuit between terminal No.C65–5
and No.I44–11.
Is the action complete?

—

Go to Step 6

—

8 

Is there continuity between the harness side
connector terminal No.C65–6 and No.I44–12?

—

Go to Step 10

Go to Step 9

9 

Repair an open circuit between terminal No.C65–6
and No.I44–12.
Is the action complete?

—

Go to Step 8

—

10 

Is there continuity between the harness side
connector terminal No.C65–1 and No.I44–13?

—

Go to Step 12

Go to Step 11

11 

Repair an open circuit between terminal No.C65–1
and I44-13.
Is the action complete?

—

Go to Step 10

–

12 

Is there continuity between the harness side
connector terminal No.C65–2 and No.I44–14?

—

Go to Step 14

Go to Step 13

13 

Repair an open circuit between harness No.C65–2
and No.I44–14.
Is the action complete?

—

Go to Step 12

—

14 

1. Disconnect the intake actuator connector No.C–

65.

2. Is the battery voltage applied between harness

side connector terminal
No.C65–6 and ground?
No.C65–2 and ground?
No.C65–1 and ground?

  

—

Go to Step 15

Go to Step 16

15 

Replace or repair the intake actuator.
Is the action complete?

—

Verify repair

—

16 

Replace or repair the air conditioner control unit.
Is the action complete?

—

Verify repair

—

SECTION

1A–122

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Inspection of the Mix Actuator System

D08RX229

Condition

Possible cause

Correction

Does not work at all

—

Refer to Chart A

Control failure

—

Refer to Chart B

SECTION

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–123

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–45).

3. Short-circuit the chassis harness side connector

terminal No.C45–2 and No.C45–7.

4. Using the temperature control lever, select FH for

the temperature.

Is the battery voltage applied on a regular interval
basis between the harness side connector terminal
No.C45–8 (-) and No.C45–6 (+)?

—

Go to Step 3

Go to Step 2

2 

Replace the auto air conditioner control unit.
 

 

—

Varify  repair

—

3 

Using the temperature control lever, select FC for the
temperature.
Is the battery voltage applied on a regular interval
basis between the harness side connector terminal
No.C45–8 (+) and No.C45–6 (-)?

—

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.I20–6 and No.C45–8?

—

Go to Step 7

Go to Step 6

6 

Repair an open circuit between terminal No.I20–6 and
No.C45–8.
Is the action complete?

—

Go to Step 5

—

7 

Is there continuity between the harness side
connector terminal No.I20–5 and No.C45–6?

—

Go to Step 9

Go to Step 8

8 

Repair an open circuit between terminal No.I20–5 and
No.C45–6.
Is the action complete?

—

Go to Step 7

—

9 

Replace the mix actuator.
Is the action complete?

—

Verify repair

—

SECTION

1A–124

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).
Does the mix actuator fully stroke when FH and FC of
the temperature control lever?

—

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.C45–2 and No.I44–11?

—

Go to Step 5

Go to Step 4

4 

Repair an open circuit between terminal No.C45–2
and No.I44–11.
Is the action complete?

—

Go to Step 3

—

5 

Is there continuity between harness side connector
terminal No.C45–7 and No.I44–5?

—

Go to Step 7

Go to Step 6

6 

Repair an open circuit between terminal No.C45–7
and No.I44–5.
Is the action complete?

—

Go to Step 5

—

7 

Is there continuity between the harness side
connector terminal No.C45–3 and No.I44–15?

—

Go to Step 9

Go to Step 8

8 

Repair an open circuit between terminal No.C45–3
and No.I44–15.
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.I44–15 and No.I52–5, No.I44–5 and No.I44–11

—

Go to Step 11

Go to Step 10

10 

Replace the actuator.
Is the action complete?

—

Go to Step 9

—

11 

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

—

Verify repair

—

SECTION