Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

04

SIM. PART POS. SW

Engine running at idle speed

Engine throttle valve Closed

(accelerator pedal in idle position)

Actuate accelerator pedal slightly

Depress accelerator pedal briefly to full load stop (full throttle)

INACTIVE

ACTIVE

INACTIVE

21, 22

-

Note:   The control unit receives a voltage signal from throttle valve potentiometer P34 via Ter. 26.

              Within a certain voltage level range, the control unit recognizes that the throttle valve is in the partial load position. TECH 1 reads this information from the control unit.

Notes on Trouble - shooting:

Nominal Value:

Cause of Fault:

·     Engine running at idle speed. Disconnect plug from throttle valve potentiometer

INACTIVE

·     Short circuit between Ter. 3 and Ter. 1 in throttle valve potentiometer plug

·     Lead interruption from

       -      control unit Ter. 26 to throttle valve potentiometer plug Ter. 3

       -      control unit Ter. 34 to throttle valve potentiometer plug Ter. 2

       -      throttle valve potentiometer plug Ter. 1 to ground

Further possible faults

·     Control unit defective