Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

30

A/C LOAD SIGNAL

Ignition OFF

Disconnect plug from AC load

switch and bridge

Ignition ON

Engine running at idle speed

AC switch ON

Remove short circuit from

plug S 109

ACTIVE       12V

INACTIVE     0V

-

D 6 / D 1

Trouble-shooting:

Nominal Value:

Cause of Fault:

(If nominal value is not attained)

·   test step 29:

OK

Carry out check 29

·   Ignition OFF

·   Disconnect wiring harness plug X 8 / X 4

·   Bridge X 8:

from:      X 8 Ter. 4 / X4 Ter. 2 (at the control unit side)

to:          battery voltage Ter. 30

·   Ignition ON

ACTIVE            12V

·   Lead interruption

from:      control unit plug K 57/K 91 Ter. D 6

to:          plug X 8 Ter. 4 / X 4 Ter. 2

·   Control unit defective

For Astra F only:

·   Ignition OFF

·   Connect wiring harness plug X 8

·   Bridge plug at switch S 109

     (AC load, speed increase)

from:      S 109 Ter. 1

to:          S 109 Ter. 2

·   Ignition ON

·   AC switch ON

·   Lead interruption

from:      S 109 Ter. 2

to:          plug X 7 Ter. F

or

from:      plug X 7 Ter. F

to:          plug X 8 Ter. 4

·   Short circuit in the wiring harness

from:      S 109

to:          ground

For Corsa B only:

·   Ignition OFF

·   Connect wiring harness plug X 4

·   Bridge plug at switch S 109

     (AC load, speed increase)

from:    S 109 Ter. 1

to:        S 109 Ter. 2

·   Ignition ON

·   AC switch ON

ACTIVE              12V

Fan operating

·   Fuse F 21 defective

·   Lead interruption

from:      fuse F 21

to:          wiring harness plug X 6 Ter. 61

or

from:      wiring harness plug X 6 Ter. 61

to:          switch S 109

or

from:      switch S 109

to:          wiring harness plug X 6 Ter. 58

·   Short circuit in wiring harness

from:      switch S 109

to:          ground