Opel Frontera UBS. Service manual — part 54
AIR CONDITIONING 1B–113
Inspection of the Fan Motor System
H-26
10 11 12 13 14 15
1 2 3 4 5
17 18 19 20
6 7 8 9
16
9 8 7 6
20 19 18 17 16
5
14
15
4
13
3
12
2
11
1
10
H-20
I-32
I-33
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
20
B-1
B-5
I-50
B-36
1
2
3
4
I-33
M
17
19
I-50
2
0.3 GR
2.0L/B
I-50
I-50
1
3
B-5
2
B-5
1
I-51
2
4
1
3
B-1
2.0 B
1
2 B
2 L/B
0.3 BR
0.5 L/B
2 L/B
2 B
0.3 GR/L
12
3.0 L
3.0 L/R
C-19 25A
FUSE
C-20 10A
FUSE
Blower Motor
Max High
Relay
Power
Transistor
Auto A/C
Control Unit
B-36
I-51
I-51
I-51
I-32
I-33
12
33
14
H-20
H-26
10
1
2
I-51
2
3
4
1
1
2 3
H-20
2
2
4
1
3
1
2
3
4
D08RY00181
1B–114 AIR CONDITIONING
Chart A: Fan Does Not Rotate At All
NO
Failure on the power supply system.
NO
Failure on the ground or the harness is
disconnected.
NO
Replace the fan motor.
YES
YES
YES
Turn on the ignition switch (the engine is
started).
Refer to Charts B and C.
Is the battery voltage present between the
chassis harness side connector terminal
No.2
and the ground?
B-5
Are the chassis harness side connector
terminals No.4
and the ground
(No. )
conducted?
B-1
I-51
Is the battery voltage present between
the chassis harness side connector
terminals No.1
and No.2
?
B-5
B-5
Type of trouble
The fan does not
rotate in any mode
other than MAX HI.
The fan does not stop.
Chart B
Chart C
Chart D
The fan does not
rotate in the MAX HI
mode.
The fan does not
rotate at all.
Chart A
AIR CONDITIONING 1B–115
Chart B: Fan Does Not Rotate in MAX HI Mode
NO
The harness is disconnected.
YES
NO
NO
NO
YES
YES
YES
Turn on the ignition switch (the engine is
started).
Set the fan switch to the MAX HI.
The harness is
disconnected.
Failure on the automatic
heater/air conditioner
control unit.
Failure on the MAX
HI relay.
Failure on the
ground or the
harness is
disconnected.
Is the battery voltage present between the
chassis harness side connector terminal
No.12
and the ground?
I-32
Are the chassis harness side connector
terminal No.4
and the body ground
(No. )
conducted?
B-1
I-51
Are the chassis harness side connector
terminals No.1
and No.2
conducted?
I-51
B-5
Is the battery voltage present between
the chassis harness side connector
terminal No.1
and No.3
d?
I-51
I-51
1B–116 AIR CONDITIONING
Chart C: Fan Does Not Rotate In Any Mode Other Than MAX HI
NO
Replace the power transistor.
NO
Failure on the ground or the harness is
disconnected.
NO
The harness is disconnected.
NO
The harness is disconnected.
YES
YES
YES
YES
Failure on the automatic heater/air
conditioner control unit.
Is the power transistor performance
normal? (Refer to the later section on
"Check Up".)
Is the battery voltage present between
the chassis harness side connector
terminal No.3
and the ground No.
?
B-1
I-50
Is conduction provided between the
following chassis harness side connector
terminals?
No.1 and
No.1 .
No.1 and
No.17 .
I-33
B-5
I-50
B-5
Are the chassis harness side connector
terminals No.2
and No.19
conducted?
I-33
I-50
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