Opel Frontera UBS. Manual - part 16

00 – 36 SERVICE INFORMATION

•

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR X5-2?

REPAIR AN OPEN CIRCUIT.

YES

NO

•

IS THE A/C THERMO RELAY NORMAL?

REPAIR AN OPEN CIRCUIT BETWEEN THE

FUSE C-20 AND X5-2.

YES

NO

•

DISCONNECT THE ELECTRONIC THERMOSTAT CONNEC-
TOR I42.

•

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR I42-3?

YES

NO

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR X5-3 AND I42-1?

REPAIR AN OPEN CIRCUIT BETWEEN I23-6

AND I42-3.

YES

NO

REPAIR AN OPEN CIRCUIT.

YES

NO

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR I42-2 AND THE GROUND?

REPAIR AN OPEN CIRCUIT.

REPLACE THE RELAY.

•

DIS CONNECT THE MAGNETIC CLUTCH CONNECTOR E27.

•

CONNECT THE BATTERY WITH MAGNETIC CLUTCH SIDE
CONNECTOR E27-1.

•

DOES THE MAGNETIC CLUTCH.

YES

NO

REPAIR OR REPLACE THE MAGNETIC CLUTCH.

•

REPAIR AN OPEN CIRCUIT BETWEEN X5-4 AND E27-1.

SERVICE INFORMATION  00 – 37

CONDENSER FAN

When the cycling switch, which controls the
condenser fan of the triple pressure switch while
the A/C switch is on, senses the refrigerant pressure

and the condenser fan turns on, the motor operates
via the condenser fan relay.

1

2

3

4

5

6

4

1

3

2

4

1

FAN SW.

B-2

OFF

I-18

I-18

B-1

(LHD)

(RHD)

X-19

1

3

4

5

RELAY;
CONDENSER
FAN

4

TRIPLE
PRESSURE
SWITCH

3

1

CONDENSER
FAN

2

M

C-75

C-39

C-25

FL-4

30A

CONDENSER FAN

FL-1

80A

MAIN

2

6
1

I-23

RELAY; A/C

A/C SWITCH

2

C-39

C-75

C-25

I-23

X-19

1

2

3

4

5

6

7

8

4

3

8

7

2

6

1

5

1

2

1

2

1

2

3

4

2

1

3

5

4

6

1

2

3

4

D08RWD70

00 – 38 SERVICE INFORMATION

CONDENSER FAN DOES NOT RUN

YES

NO

•

DOES A/C SYSTEM OPERATE CORRECTLY?

•

IS FL-4 (30A) FUSE OK?

CHECK A/C SYSTEM AND REPAIR AS NECESSARY

YES

NO

•

IS CONDENSER FAN RELAY (X-19) OK?

REPLACE

REPLACE

YES

NO

•

IS TRIPLE PRESSURE SWITCH (CYCLING SWITCH SIDE)
OK?

REPLACE

YES

NO

•

IS CONDENSER FAN MOTOR OK?

REPLACE

YES

NO

•

CHECK TO SEE IF CONTINUITY BETWEEN FL-4 (30A)
FUSE AND CHASSIS SIDE RELAY TERMINAL NO. X19-1.

REPLACE

YES

NO

•

CHECK TO SEE IF CONTINUITY BETWEEN CHASSIS SIDE
CONNECTOR TERMINAL NO. I23-6 AND NO. C25-3.

OPEN CIRCUIT

YES

NO

•

CHECK TO SEE IF CONTINUITY BETWEEN CHASSIS SIDE
CONNECTOR TERMINAL NO. C25-4 AND CHASSIS SIDE
RELAY TERMINAL NO. X19-4.

OPEN CIRCUIT

YES

NO

•

CHECK TO SEE IF CONTINUITY BETWEEN CHASSIS SIDE
RELAY TERMINAL NO. X19-5 AND CHASSIS SIDE
CONNECTOR TERMINAL NO. I18-4.

OPEN CIRCUIT

YES

NO

SERVICE INFORMATION  00 – 39

•

CHECK TO SEE IF CONTINUITY BETWEEN CHASSIS SIDE
RELAY TERMINAL NO. X19-3 AND CHASSIS SIDE
CONNECTOR TERMINAL NO. C75-1.

YES

NO

OPEN CIRCUIT

POOR GROUND OR OPEN CIRCUIT BETWEEN CHASSIS 
SIDE CONNECTOR TERMINAL NO. C75-2 AND BODY
GROUND (NO. C39-7)

CONDENSER FAN DOES NOT STOP

•

IS CONDENSER FAN RELAY (X-19) OK?

YES

NO

REPLACE

TRIPLE PRESSURE SWITCH (CYCLING SWITCH SIDE)
DEFECTIVE

REPLACE TRIPLE PRESSURE SWITCH