vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

F7: PROGRAMMING - No. 01 VARIANT-CODING > < F6: ADJUSTMENTS - No. 02 O2 BLM RESET

Motronic M 1.5.4    System Modification F 6: ADJUSTMENTS

 

IAC BLM RESET

 

Conditions for Checking

Nominal Value

 

Affected Terminals: 4, 24

Possible Trouble Codes: 56, 57

 

Engine running at idle speed

 

Engine throttle valve CLOSED (accelerator pedal in idle position)

 

Vehicle stationary

 

Press key F 6 in the main menu, select the desired test using the arrow keys and confirm with YES. Follow the instructions in the TECH 1 display.

 

 

IAC INTEGRATOR

IAC BLOCK LEARN

 

Note:

In this mode, it is possible to reset the above mentioned engine learn parameters using the arrow keys, i. e. to set them to 128 steps.

The learn parameters indicate the short - term and long - term behaviour of the idle speed adjuster control circuit. If a fault occurs in this circuit, these values taper off upwards or downwards. If the fault in the idle speed adjuster control circuit is eliminated, the learn parameters return to the normal value of 128 steps. This process may however take several minutes.

For this reason, it is possible to reset the parameters directly to the normal value of 128 steps using this TECH 1 mode. The engine should then be run for some time in spite of this, to check that the idle speed adjuster control circuit has been correctly repaired.

The reset is triggered by the ARROW UP key. In addition, the various data list parameters can be displayed via the YES and NO keys. Key F9 can be used to store data as in the snapshot mode.

 

128 steps

128 steps

 

 

 


Related Literature Units
-F2: TROUBLE CODES - Trouble Code 56 IDLE AIR CONTROL VOLTAGE HIGH
-

F7: PROGRAMMING - No. 01 VARIANT-CODING > < F6: ADJUSTMENTS - No. 02 O2 BLM RESET