Basic Setting (Function 04)
Basic Setting (Scan Tool Function 04)
NOTES:
- The specified values for the "Basic Setting" and "Read Measuring Value Block" functions are described in the respective component test descriptions.
- Disconnecting the battery or the Engine Control Module (ECM) harness connector will erase all learned values and the readiness code. Diagnostic Trouble Code (DTC) memory, however, will not be erased. After reconnecting the battery and/or the ECM, the engine may idle unevenly and there may be some temporary loss of driveability. If so, let the engine run at idle for a few minutes until the learning process has been completed.
- No learning will take place if a malfunction affecting engine regulation is stored in DTC memory (this does not include sporadic malfunctions).
- Basic settings are established with the engine running.
- In "Basic Setting" display groups 60 or 98, with the engine stopped and the ignition switched on, adaptation of the throttle valve control module -J338- takes place. Adaptation of throttle valve control module - J338- (with "Basic Setting" function 04 and display group 60).
- In "Basic Setting" display groups 88 or 99, oxygen sensor control is switched off. This makes it possible to check for malfunctions that may be caused by oxygen sensor control being switched on or off In the selected display group, press buttons -4- and -8- to switch back and forth between "Read Measuring Value Block" function 08 and "Basic Setting" function 04.
After selecting "Basic Setting" function 04, the ECM takes the following actions:
- EVAP canister purge regulator valve is closed
- A/C compressor is switched off
Requirements
- Vehicle stationary, engine running at idle
- Accelerator pedal not depressed
- Selector lever in "P" or "N" position
- No malfunctions stored in DTC memory
- Engine coolant temperature at least 80 °C (176 °F)
- All electrical consumers switched off (coolant fan must not run during test)
- A/C switched off (press "-" button on A/C control head repeatedly until the display is erased)
Test sequence
- Connect VAG1551/VAG1552 Scan Tool (ST) and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (engine running at idle). [1][2]Scan Tool Connecting and Initial Checks
Indicated on display
Rapid data transfer HELP
Select function XX
- Operate scan tool while observing messages on display:
NOTE: By pressing the HELP button an overview of possible functions will be printed out.
- Press buttons -0- and -4 to select "Basic Setting" function 04, and press -Q- button to confirm input.
Indicated on display
System In Basic Setting Q
Input display group number XXX
NOTE: Display group number 0 (000) is used as an example to demonstrate the procedure.
To change to another display group:
- Press -0- button three times to input display group number 0 (000), and press -Q- button to confirm input.
Indicated on display
System in Basic Setting ->
1 2 3 4 5 6 7 8 9 10
NOTES:
- In display group 0 the measuring values are displayed in decimal form.
- The display can be printed out by pressing the PRINT button.
- If specified values were attained in all display fields, press -> button to advance through program sequence.
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.
- If one of the specified values is not attained evaluation of display group 000.
- Continue by using procedures in "Corrective action" column.
Display group 000 (display in decimal values)
Display Group 000:
Display group 000-evaluation
