Vauxhall Workshop Service and Repair Manuals

No.

TECH 1 Display

Conditions for Checking

Nominal Value

Trouble Codes

Terminal

01

SELECT ADJUSTMN IDLE SPEED

Note:

Before adjusting the idle speed and thus reprogramming the fixed values, it is useful if the amount that the engine speed is going to be increased or decreased is known, as once adjustment is completed, communication is broken off and has to be re - established from scratch. If the newly programmed idle speed does not then suit the requirements, the whole procedure has to be repeated. It is simpler to first establish the desired idle speed increase or decrease using the engine speed test described in F8: ECU control, and then program this fixed value using the adjustment procedure described below.

Ignition ON

Engine OFF

Press key F6 in the system main menu, select the desired test using the arrow keys and confirm with YES.

Follow the instructions in the TECH 1 display.

Note:

The idle speed can be changed using the arrow keys:

·   Arrow key up: engine speed increases in steps of 50, 100, 150 rpm

·   Arrow key down; offset can be reduced again in steps of 50

The set idle speed is confirmed with Enter.

When the ignition is switched off and on again after programming is completed, the new idle speed is stored in the EEPROM.

-

-

Ignition OFF

Ignition ON

If the display on the right appears after  programming is completed, the programming was successful. The engine should then be started and the relevant data list parameter selected at idle speed (engine speed). The idle speed displayed must correspond to the adjusted value.

IDLE SPEED OFFS UPDATE SUCCESSFUL!

 01

SELECT ADJUSTMN IDLE SPEED

If, however, the display on the right appears after programming is completed, a fault has occurred during programming. Carry out the following measures consecutively:

·   Read out trouble codes

·   Repeat programming

·   Carry out TECH 1 self - test

·   Check TECH 1 cable for damaged insulation and

·   shielding

·   Reprogram with new control unit

IDLE SPEED OFFS UPDATE FAILED!

56, 57

4, 24

If the display on the right appears after selection of the test, it is not possible to perform the selected function for the current control unit.

FUNCTION

NOT AVAILABLE!

Notes on Trouble - shooting:

Nominal Value:

Cause of Fault:

·  See FO: DATA LIST, test steps 31 to 34

·   See Table 1; ALDL Diagnostic Plug, Voltage Supply and Auxiliary Fan for Electronics Box, Check Test steps 1 to 10