Engine Performance - Checking Basic Engine Setting
Group: 01Number: 92-02
Date: November 30, 1992
Subject:
Basic Engine Adjustment
Using VAG 1551
Model(s): 100
1992 m.y.
Basic Setting of Engine using
Scan Tool VAG 1551
Note
When Basic Setting is selected, the MPI Engine
Control Module (ECM) establishes the following conditions:
^ Idle Air Control (IAC) is blocked
^ constant timing of 12~ is set
^ Evaporative Emission (EVAP) solenoid valve I is closed
^ A/C compressor is switched OFF
^ EGR valve switched OFF
^ no Engine Coolant Temperature (ECT) correction
(fixed value: 80~C or 176~F)
Requirements
^ Diagnostic Trouble Code (DTC) memory has been read and erased, section D2-20 in Troubleshooting Guide
^ ECT 85~C (185~F) minimum
^ all electrical consumers switched OFF
- A/C switched OFF
- repeatedly press MINUS button for blower speed selection in A/C control head until all displays are erased
^ vehicles with climate control only
- transmission selector lever in P or N
- disconnect hoses from valve covers and close off both hose ends with suitable plugs
V6 Crankcase Vent Hose:
- to remove hoses push oval outer ring together at location shown (arrows)
- to close off hoses use plastic plugs as shown, normally used to close connections for new parts
- connect VAG 1551 Scan Tool and perform all steps up to entry of address word 01
- start engine and let idle
Note
A list of possible functions will be printed after pressing the HELP button.
- press 0 and 4 buttons to select
Function 04 "Start basic setting"
display will appear as shown
- press Q button to enter input
display will appear as shown
Note
Press HELP button to list instructions for entering the display group number.
- press 0 button two times to select
Function 00
"System in basic setting"
- press Q button to enter input
display will appear as shown
Note
For an explanation of the various channel displays, see chart in this bulletin.
The values which will appear in channels 1 through 10 are displayed in decimals.
Refer to "DESCRIPTION..." column to convert these values to physical values whenever this becomes necessary.
^ current display will be printed on paper strip if printer is switched ON
^ current display will print again whenever the PRINT button is pressed
Values displayed in all channels.
- press (arrow) button
^ current display will print again whenever the PRINT button is pressed
Values displayed in all channels:
- press (arrow) button
display will appear as shown
- press 0 and 6 buttons and select
Function 06 "End output"
display will appear as shown
- press Q button to enter input
display will appear as shown
Explanations of displays in channels 1-10