With Manufacturer's Scan Tool
Readiness Code, Generating
Special tools and equipment
- VAG 1551 scan Tool (or VAG 1552 mobile scan tool) with VAG 1551/3B cable
Test requirements
- All fuses must be OK.
- For vehicles with automatic transmission, selector lever must be in -P- or -N-.
- Parking brake must be engaged or else daylight driving lights will be switched on.
- All electrical consumers like, for example, lights and rear window heating must be switched off.
- Battery voltage must be at least 11.5 volts.
- Coolant temperature must be at least 80 °C, See Display group 04, display field 3
- Intake Air Temperature (IAT) less than 60 °C See Display group 04, display field 4
- Three-way Catalytic Converter (TWC) temperature must be at least 350 °C See Display group 34, display field 2
Procedure
- Connect VAG 1551 scan tool (VAG 1552). Then switch ignition on and select the Engine Control Module (ECM) using address word 01
connecting scan tool and selecting ECM. Refer to Scan Tool Connecting and Initial Checks. Scan Tool Testing and Procedures
Work 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. Press -Q- button to confirm input.
Number of stored DTCs or "No DTC recognized" will be indicated on display.
X malfunctions recognized!
If a DTC is stored:
- Repair malfunctions that were printed out using DTC table: SAE P0-Codes, SAE P1-Codes. P Code Charts
If no DTCs are stored:
- Press the -> button.
Work 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. Press -Q- button to confirm input.
NOTE: The readiness code is reset/erased every time DTC memory is erased.
Indicated on display:
Rapid data transfer ->
DTC Memory is erased!
NOTE: If ignition was switched off between the steps "Check DTC memory" and "Erase DTC memory", DTC memory will not be erased.
- Press the -> button.
Work step 3: Adapt Throttle Valve Control Module -J338- to Engine Control Module (ECM)
Indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4- to select "Basic Setting" function 04. Press -Q- button to confirm input.
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -0-, -6- and -0- for the function "display group number 60", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 60 ->
xxx % xxx % x ADP in progress
- Check specified values in display fields 3 and 4 Display field 3: 0 to 8 Display field 4: ADP in progress, ADP OK
Indicated on display: (1 to 4 = display fields)
System in basic setting 60 ->
xxx % xxx % 8 ADP OK
- Do not end adaptation by pressing the -> button, until it has been in progress for at least 30 seconds.
- Then start engine and select the Engine Control Module (ECM) using address word 01.
Connecting scan tool and selecting ECM. Refer to Scan Tool Connecting and Initial Checks. Scan Tool Testing and Procedures
Indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4- to select "Basic Setting" function 04. Press -Q- button to confirm input.
Indicated on display:
Basic Setting
Enter display group number XXX
Work step 4: Diagnostic of tank seal
NOTE: Perform this work step with vehicle stationary and running at idle.
- Press -2-, -0- and -2- for the function "display group number 202", and then press Q to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 202 ->
1 2 3 4
- Continue to let engine run at idle speed until display field 4 indicates the following after approx. 30 seconds. Specification: x x x x x 1 0 0 is indicated.
NOTE: During this work step, the diagnostic pump can start repeated diagnostic procedures until specified value is obtained, depending on how much fuel is in fuel tank. If a diagnostic time of 3 minutes is exceeded, there may be a leak that has not resulted in a DTC entry.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
NOTE:
- Work steps 5 and 6 must be performed during a road test.
- Engine must not be shut off for further work procedures following road test.
- For some work steps, it is possible that a subsequent diagnostic has already been completed successfully in the background. In this case, continue with the next work step.
Observe the safety precautions that apply to road tests
Note test requirements.
Work step 5: Diagnostic of knock control
Indicated on display: (1 to 4 = display fields)
System in basic setting 203 ->
1 2 3 4
- Accelerate vehicle in 1st gear until an engine speed of approx. 3000 RPM is reached.
- Let engine run briefly at approx. 3000 RPM until display field 4 indicates Specification: x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 6: Diagnostic of vehicle speed
Indicated on display: (1 to 4 = display fields)
System in basic setting 204 ->
1 2 3 4
- Accelerate vehicle until an engine speed of more than 3000 RPM is reached.
- Then abruptly close throttle valve. Specified value following deceleration mode in Display field 4: x x x x x 1 0 0
NOTE: The indication "deceleration" must be obtained once for approx. three seconds. Drive in 1st gear for this.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 7: Diagnostic of oxygen sensor heating before Three-way Catalytic Converter (TWC)
NOTE: Work steps 7 through 18 can be performed with gas and brake pedal completely depressed once work steps are completed successfully.
- Let engine run at idle.
Indicated on display: (1 to 4 = display fields)
System in basic setting 205 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
Engine speed will be raised to about 2300 RPM by the Engine Control Module (ECM).
- Let engine run at increased RPM until display field 4 indicates Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 8: Diagnostic position of intake camshaft to crankshaft
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -0- and -8- for the function "display group number 208", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 208 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 9: Diagnostic position of exhaust camshaft to crankshaft
Indicated on display: (1 to 4 = display fields)
System in basic setting 209 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 10: Diagnostic of (intake) camshaft adjustment
Indicated on display: (1 to 4 = display fields)
System in basic setting 210 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 40 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 11: Diagnostic of (exhaust) camshaft adjustment
Indicated on display: (1 to 4 = display fields)
System in basic setting 211 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 40 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press button -3- (VAG 1551) or up-arrow button (VAG 1552).
Work step 12: Diagnostic of oxygen sensor aging before Three-way Catalytic Converter (sensor dynamics)
Indicated on display: (1 to 4 = display fields)
System in basic setting 212 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 80 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
NOTE: It is possible that the Three-way Catalytic Converter (TWC) is no longer at the required temperature for this work step. Switch to the mode "Read Measuring Value Block" and into display group 046. Raise Three-way Catalytic Converter (TWC) temperature to at least 350 °C via an engine speed of approx. 3500 RPM and repeat this work step.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 13: Diagnostic of fuel supply system (partial throttle)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -1- and -6- for the function "display group number 216", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 216 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 75 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 14: Diagnostic of mass air volume detection
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -1- and -8- for the function "display group number 218", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 218 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates Specification: x x x x x 1 0 0 is indicated.
NOTE: This procedure may last approx. 4 minutes.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 15: Diagnostic of oxygen sensor heating behind Three-way Catalytic Converter (TWC)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -2- and -0- for the function "display group number 220", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 220 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 16: Diagnostic of oxygen sensor behind Three-way Catalytic Converter (TWC)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -2- and -2- for the function "display group number 222", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 222 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 30 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 17: Diagnostic of oxygen sensor aging behind Three-way Catalytic Converter (TWC) (sensor dynamics)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -2- and -5- for the function "display group number 225", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 225 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 15 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 18: Diagnostic of Three-way Catalytic Converter (TWC)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -2- and -7- for the function "display group number 227", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 227 ->
1 2 3 4
- Depress brake pedal and hold down.
- Depress accelerator pedal until it is in Wide Open Throttle (WOT) position.
The Engine Control Module (ECM) raises the engine speed to about 2300 RPM.
- Let engine run at increased RPM until display field 4 indicates the following after approx. 60 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
NOTE: After this work step, the Engine Control Module (ECM) returns to the condition -idle-.
- Release the accelerator and brake pedal.
- Let engine run at idle.
Work step 19: Diagnostic of fuel supply system (idle)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -1- and -6- for the function "display group number 216", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 216 ->
1 2 3 4
- Continue to let engine run at idle speed until display field 4 indicates the following after approx. 30 seconds Specification: x x x x x 1 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 20: Diagnostic of EVAP canister system (tank ventilation system)
Indicated on display:
Basic Setting
Enter display group number XXX
- Press -2-, -2- and -9- for the function "display group number 229", and then press -Q- to exit from input mode.
Indicated on display: (1 to 4 = display fields)
System in basic setting 229 ->
1 2 3 4
- Continue to let engine run at idle speed until display field 4 indicates the following after approx. 30 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press -C- button.
Work step 21: Diagnostic of Secondary Air Injection (AIR) system
Indicated on display:
Basic Setting
Enter display group number XXX
- Press buttons -2-, -3- and -1- to select "Display group number 231". Press -Q- button to confirm input.
Indicated on display: (1 to 4 = display fields)
System in basic setting 231 ->
1 2 3 4
- Continue to let engine run at idle speed until display field 4 indicates the following after approx. 40 seconds Specification: x x x x x 1 0 0 is indicated.
If indications do not resemble description:
- Press the -> button.
- Check DTC memory.
If indications resemble description:
- Press the -> button.
- Read readiness code. Readiness Code Reading
- Switch ignition off.