With Manufacturer's Scan Tool
Readiness Code (Function 15), Generating
Special tools and equipment
VAG1551 Scan Tool (ST) or VAG1552 mobile scan tool with VAG1551/3 adapter cable
Test conditions
- Vehicle stationary
- Battery (B+) voltage at least 11.5 V
- Automatic transmission selector lever in "P" or "N" position
- All electrical consumers (e.g. lights and rear window defroster) switched off
- Coolant temperature must be 5 - 95 °C. See display group 04, display field 3
- Intake air temperature less than 60 °C. See display group 04, display field 4
- Connect VAG1551 Scan Tool (ST) (VAG1552), then switch ignition on and select Motronic Engine Control Module (ECM) -J220- by pressing buttons -0- an -1- to insert "Engine Electronics" address word 01.
Step 1: Check DTC memory
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -2- to select "Check DTC Memory"function 02 and press -Q- button to confirm input.
Indicated on display (number of stored DTCs, or "No DTC recognized").
X DTC recognized ->
If one or more DTCs are stored, the stored DTCs will be displayed and printed out one after the other.
If a DTC is stored:
- Using the DTC table repair malfunctions on print-out:
- Check print-out against DTC table and repair all malfunctions as necessary.
If no DTCs are stored:
- Press -> button.
Step 2: Erase DTC memory
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -5- to select "Erase DTC Memory" function 05, and press -Q- button to confirm input.
NOTE:
When erasing DTC memory, the readiness code is also erased.
Indicated on display
Rapid data transfer ->
DTC Memory is erased
- Press -> button.
NOTE:
If the ignition is switched off between "Check DTC memory" and "Erase DTC memory," DTC memory will not be erased.
- Press button.
Step 3: Adaptation of throttle valve control module to ECM
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4-to select "Basic Setting" function 04 and press -Q- button to confirm input.
Indicated on display
Basic Setting
Input display group number XXX
- Press buttons -0-, -6- and -0- to input display group 60 (060) and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
System in Basic Setting 60 ->
1 2 3 4
- Check specified value in display field 3 and 4.
Display Group 060:
Terminate engine basic setting after minimum of 30 seconds by pressing -> button.
Step 4:
- Start engine and run at idling speed.
NOTE:
During the test sequence the engine must not be switched off.
Indicated on display 1)
V.A.G - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer
2 - Blink code output
1) Operating modes 1 and 2 are displayed alternately
- Press button -1- to select "Rapid data transfer" operating mode 1.
- Press buttons -0- and -1- to insert "Engine Electronics" address word 01 and press -Q- button to confirm input.
The control module identification and coding are indicated on the display
021906018B MOTRONIC ME7.1 G V06 ->
Coding 00000 WSC 00000
- Press -> button.
Step 5: Oxygen sensor (O2S) aging diagnostic (cycle duration monitor)
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4-to select "Basic Setting" function 04 and press -Q- button to confirm input.
Indicated on display
Basic Setting
Input display group number XXX
- Press buttons -0-, -3- and -4- to input display group 34 (034) and press -Q- button to confirm input.
Indicated on display (1-4 display fields)
Read Measuring Value Block 34 ->
1 2 3 4
- Depress brake pedal and hold.
NOTE:
Engine speed will be increased by engine control module.
- Check specified value in display fields 1-4.
If the diagnostic is initiated from Motronic Engine Control Module (ECM) - J220- the display in display field 4 changes from "Test OFF" to "Test ON."
Display Group 034:
If the display does not indicate as described:
- Press -> button.
- Check DTC memory.
If the specified values are attained:
- Release brake pedal.
- Press -C- button.
Step 6: Three Way Catalytic Converter (TWC) diagnostic
NOTE:
The diagnostic will only be terminated if the oxygen sensor aging diagnostic is first successfully completed.
Indicated on display
Basic setting
Input display group number XXX
- Press buttons -0-, -4- and -6- to input display group number 46 (046) and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
System in basic setting 46 ->
1 2 3 4
- Depress brake pedal and hold.
NOTE:
The engine control module will increase the engine speed.
- Check catalyst conversion (amplitude ratio) in display field 3:
Specification: max. 0.50
- Allow engine to run at increased idle until specification: "Cat B1 OK" is displayed in display field 4.
If the diagnostic is initiated from Motronic Engine Control Module (ECM) - J220- the display in display field 4 changes from "Test OFF" to "Test ON."
NOTE:
The diagnostic takes approx. 100 seconds.
If the display does not indicate as described:
- Press -> button.
- Check DTC memory.
If the specified values are attained:
- Release brake pedal.
- Press -C- button.
Step 7: Secondary Air Injection (AIR) system diagnostic
NOTE:
The diagnostic will only be terminated if the oxygen sensor aging diagnostic is successfully completed first.
Indicated on display
Basic Setting
Input display group number XXX
- Press buttons -0-, -7- and -7- to input display group number 77 (077) and press -Q- button to confirm input.
Indicated on display (1-4 display fields)
System in basic setting 77 ->
1 2 3 4
- Allow engine to continue running at idle until "Syst. OK." is displayed in display field 4.
If the diagnostic is initiated from Motronic Engine Control Module (ECM) - J220-, the display in display field 4 changes from "Test OFF" to "Test ON."
Display Group 077:
If the display does not indicate as described:
- Press -> button.
- Check DTC memory.
If the specified values are attained:
- Press -C- button.
Step 8: EVAP system and fuel tank leak detection
NOTE:
The engine must not be loaded during this diagnostic because the diagnostic will be interrupted and will not be started again until the engine is revved-up.
Indicated on display
Basic setting
Input display group number XXX
- Press buttons -0-, -7- and -0- to input display group number 70 (070) and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
System in basic setting 70 ->
1 2 3 4
- Allow engine to continue running at idle until "EVAP OK." is displayed in display field 4.
If the diagnostic is initiated from Motronic Engine Control Module (ECM) - J220-, the display in display field 4 changes from "Test OFF" to "Test ON."
Display Group 070:
If the display does not indicate as described:
- Press -> button.
- Check DTC memory.
If the specified values are attained:
- Press button -3- (VAG1551) or button (VAG1552).
Indicated on display (1-4 display fields)
System in basic setting 71
1 2 3 4
- Allow engine to run at idle until specification "Syst. OK." is displayed in
display field 4.
If "Reed op." appears:
- Open fuel tank cap briefly to allow pressure in fuel tank to dissipate (this will close reed contact).
If the diagnostic is initiated from Motronic Engine Control Module (ECM) -J220- the display in display field 4 changes from "Test OFF" to "Test ON."
Display Group 071:
NOTES:
- If the display in display field 4 changes from "Test ON" to "Test OFF" during diagnostic, and "Abort" is displayed in display field 2, repeat EVAP system/ fuel tank leak detection.
- The fuel filler cap must be opened briefly before repeating the diagnostic.
If the display does not indicate as described:
- Press -> button.
- Check DTC memory.
If the specified values are not attained:
- Press -> button.
- Press buttons -0- and -6- to select "End output" function 06 and press -Q- button to confirm input.
- Switch ignition off.
Step 9: Display readiness code
- Display readiness code.