Opel Frontera UBS. Manual - part 14

00 – 28 SERVICE INFORMATION

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?

SERVICE INFORMATION  00 – 29

•

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

•

DISCONNECT THE PCM CONNECTORS.

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR X5-4 AND PCM C3-E15?

REPAIR AN OPEN CIRCUIT.

YES

NO

•

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

REPAIR AN OPEN CIRCUIT.

YES

NO

•

DISCONNECT THE A/C COMPRESSOR RELAY CONNEC-
TOR X7.

•

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR X7-1 AND X7-2?

REPLACE THE ELECTRONIC THERMOSTAT.

YES

NO

•

RECONNECT X5 AND I42.

•

IS THE BATTERY VOLTAGE APPLIED AT HARNESS SIDE
CONNECTOR PCM C3-E15?

REPAIR AN OPEN CIRCUIT.

REPLACE THE RELAY.

00 – 30 SERVICE INFORMATION

YES

NO

REPAIR AN OPEN CIRCUIT BETWEEN THE
FUSE C-20 AND X7-1 (OR X7-2).

•

DIS CONNECT THE MAGNETIC CLUTCH CONNECTOR E3.

•

CONNECT THE BATTERY WITH MAGNETIC CLUTCH SIDE
CONNECTOR E3-1.

•

DOES THE MAGNETIC CLUTCH WORK?

YES

NO

NO

REPAIR OR REPLACE THE MAGNETIC CLUTCH.

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR X7-4 AND E3-1?

YES

REPAIR AN OPEN CIRCUIT.

REPAIR AN OPEN CIRCUIT.

REPAIR AN OPEN CIRCUIT.

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR X7-3 AND PCM C1-B14?

YES

NO

NO

•

IS THERE CONTINUITY BETWEEN HARNESS SIDE CON-
NECTOR X5-4 AND PCM C3-E15?

YES

REPLACE THE PCM.

SERVICE INFORMATION  00 – 31

4JG2 ENGINE

1

2

3

4

5

6

RELAY; A/C

B-36

C-20

(LHD)

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

E-3

I-23

BATTERY

3

1

2

ELECTRONIC
THERMOSTAT

1

E-3

MAGNETIC
CLUTCH

Mg

OFF

I-18

2

6

1

3 2 1

1 2 3

1

2

3

4

1 2

1

2

1

3

5

4

6

I-18

X-5

B-1

(LHD)

(RHD)

B-1

1

2

3

4

W/ CONDENSER

FAN

I-42

I-42

B-36

D08RY00169