Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

28

A/C CUTOFF REQ.

25 DT engine only:

Engine running at idle speed, operating temperature

AC switch ON

ACTIVE  12V

AC operating

21

Note:

Vehicle interior should be warm, set thermostat to "COLD", set ventilation to full load;

compressor switches on automatically;

in some vehicles it is necessary to accelerate briefly or to wait for a while until the compressor switches

Vehicle standing on incline

Select "winter program"

Accelerate from standstill with throttle valve position greater than 80 %

INACTIVE 0V

AC not operating

Note:

Under extreme driving conditions, the transmission control unit recognises whether the engine requires the full torque available when the AC is OFF

The AC is switched off

NOT USED

All other engines or vehicles without AC:

Nominal value:

Cause of fault:

(If nominal value is not attained)