Vauxhall Omega B Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

03

SIM. IDLE 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)

ACTIVE

INACTIVE

INACTIVE

21, 22

26, 34, 19

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

              Below a certain voltage level, the control unit recognizes that the throttle valve is in the idle 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

ACTIVE

·     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

·     Control unit defective

Note:

Before replacing the control unit, reinitialize theEEPROM and check again.

Further possible faults

·     Check throttle valve stop bolt for correct seating