Opel Frontera UBS. Manual - part 15

 

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Opel Frontera UBS. Manual - part 15

 

 

00 – 32 SERVICE INFORMATION

MAGNETIC CLUTCH DOES NOT RUN

ARE NO. C-20 (10A) FUSE AND NO. C-19 (25A) FUSES OK?

YES

NO

REPLACE

ARE HEATER & A/C (B-36) AND THERMOSTAT (X-5)
RELAYS OK?

YES

NO

REPLACE

IS PRESSURE SWITCH (DUAL PRESSURE SWITCH) OK?

YES

NO

SWITCH DEFECTIVE OR INSUFFICIENT REFRIGERANT

ARE A/C SWITCH AND FAN CONTROL KNOB (FAN
SWITCH) OK?

YES

NO

REPLACE

TURN THE IGNITION SWITCH “ON” (ENGINE IS
RUNNING)

A/C SWITCH AND FAN CONTROL KNOB (FAN SWITCH
“ON”

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE CONNECTOR TERMINAL NO. E3-1

NO

YES

MAGNETIC CLUTCH DEFECTIVE 

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE CONNECTOR TERMINAL NO. C25-1

YES

NO

OPEN CIRCUIT BETWEEN NO. C-20 (10A) FUSE AND
NO. C25-1

DISCONNECT THERMO RELAY (X-5)

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE RELAY TERMINAL NO. X5-2 

YES

NO

OPEN CIRCUIT BETWEEN NO. C25-2 AND NO. X5-2 

CHECK TO SEE IF VOLTAGE (APPROX. 10V) IS PRESENT
CHASSIS SIDE RELAY TERMINAL NO. X5-1 AND
NO. X5-3

CONTINUED NEXT PAGE

SERVICE INFORMATION  00 – 33

CONTINUED PREVIOUS PAGE

NO

YES

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE RELAY TERMINAL NO. X5-1

OPEN CIRCUIT BETWEEN NO. X5-4 AND NO. E3-1

YES

NO

RECONNECT THERMO RELAY 

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE CONNECTOR TERMINAL NO. I42-3

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE CONNECTOR TERMINAL NO. I23-2

NO

YES

OPEN CIRCUIT BETWEEN
NO. C-20 (10A) FUSE AND
NO. I23-2

OPEN CIRCUIT BETWEEN
X5-1 AND NO. I23-6

NO

YES

CHECK TO SEE IF BATTERY VOLTAGE (APPROX. 10V)
IS PRESENT AT CHASSIS SIDE CONNECTOR TERMINAL
NO. I42-1

YES

NO

CHECK TO SEE IF BATTERY VOLTAGE IS PRESENT AT
CHASSIS SIDE CONNECTOR TERMINAL NO. I42-2

OPEN CIRCUIT BETWEEN NO. X5-3 AND NO. I42-1

YES

NO

OPEN CIRCUIT BETWEEN NO. I42-2 AND NO. I18-4 OR
POOR 

G

ROUND (FAN SWITCH GROUND CIRCUIT)

ELECTRO THERMO DEFECTIVE

OPEN CIRCUIT BETWEEN
NO. I23-6 AND NO. I42-3

00 – 34 SERVICE INFORMATION

4JX1 ENGINE

1

2

3

4

5

6

RELAY; A/C

B-36

C-20

10A

A/C

FL-1

80A

MAIN

1

2

B-2

C-25

2

4

X-5

1

3

4

1

3

2

4

1

A/C SW.

FAN SW.

I-23

PRESSURE
SW.

RELAY;
THERMO

B-2

C-25

I-23

BATTERY

1

E-27

MAGNETIC
CLUTCH

Mg

OFF

I-18

2

6

1

3 2 1

1 2 3

1

2

3

4

1 2

2

1

3

5

4

6

I-18

X-5

B-1

(LHD)

(RHD)

3

1

2

ELECTRONIC
THERMOSTAT

I-42

B-1

1

2

3

4

W/ CONDENSER

FAN

I-42

B-36

E-27

1

1

D08RY00170

SERVICE INFORMATION  00 – 35

MAGNETIC CLUTCH DOES NOT RUN

TURN THE STARTER SWITCH ON AND START THE
ENGINE.

TURN THE FAN SWITCH ON.

DOES THE BLOWER MOTOR RUN?

YES

NO

REFER TO THE DIAGNOSIS PROCEDURE FOR
“BLOWER MOTOR DOES NOT RUN”.

IS THE FUSE C-20 (10A) NORMAL?

YES

NO

REPLACE THE FUSE.

DISCONNECT THE A/C SWITCH CONNECTOR AND
REMOVE THE A/C SWITCH.

IS THE A/C SWITCH NORMAL?

YES

NO

YES

NO

REPAIR AN OPEN CIRCUIT BETWEEN THE
FUSE C-20 AND I23-2.

REINSTALL THE A/C SWITCH AND DISCONNECT THE DUAL
PRESSURE SWITCH (OR TRIPLE PRESSURE SWITCH) CON-
NECTOR C25.

TURN THE A/C SWITCH ON.

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR C25-1?

YES

NO

REPLACE THE SWITCH.

RECONNECT THE CONNECTOR C25 AND DISCONNECT THE
A/C THERMO RELAY CONNECTOR X5.

IS THERE CONTINUITY BETWEEN HARNESS SIDE CONNEC-
TOR C25-2 AND X5-1?

YES

NO

REPAIR AN OPEN CIRCUIT BETWEEN I23-6
AND C25-1.

IS THE DUAL PRESSURE SWITCH (OR TRIPLE PRESSURE
SWITCH) NORMAL?

YES

NO

REPAIR OR REPLACE THE SWITCH.

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR I23-2?

 

 

 

 

 

 

 

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