Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

29

SEC. AIR PUMP REL

Engine running at idle speed, cold

ACTIVE   0V

46, 47

26, 19

Engine running at idle speed, operating temperature

(at coolant temperature above about 60 °C / 140 °F)

INACTIVE 12V

Alternative check if engine is already warm:

Engine warm

Disconnect coolant temperature sensor P 30

Note:

When the coolant temperature sensor is disconnected, the control unit is provided with a coolant temperature of - 35 °C / - 31 °F. This means that a trouble code is set when the engine is switched off. The trouble code must be deleted again (using TECH 1) the next time the engine is started and the coolant temperature sensor is connected.

ACTIVE   0V