Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

06

DESIRED IDLE

Engine running at idle speed, operating temperature

-

-

Vehicles with MT

900 rpm

Vehicles with AT

Engage parking brake

Selector lever position       P N

775 rpm

                                           R D 21

700 rpm

Test step "DESIRED IDLE " is only active in TECH 1 mode "F8". Test step "DESIRED IDLE " may be used to test engine behaviour at increased speeds. Using the arrow keys, it is possible to alter the speed within a range of 650 rpm to 1800 rpm. All other TECH 1 displays can be monitored simultaneously. TECH 1 is automatically in the snapshot mode, so that in the event of any unusual occurrence the memory function can be immediately activated via "F9" key. TECH 1 uses the idle speed stepper motor to set the speed to the desired value; a change in the "IDLE AIR CONTROL " display is therefore not a fault.

Trouble - shooting:

Nominal Value:

Cause of Fault:

(If nominal value is not attained)

·   Select TECH 1 mode "F8" and confirm with YES key.

·   Engine at idle speed, operating temperature

Engine speed increases to 1000 rpm

·   Carry out TECH 1 selection once again

·   Check idle speed regulator (test step 08)

·   Check throttle valve potentiometer (test step 04)

* Only possible if trouble code 21 or 22 is not present.