With Manufacturer's Scan Tool

Readiness Code, Setting

Special tools and equipment







- VAG 1551/1552 Scan Tool using VAG 1551/3 adaptor cable
- VAG 1788/10 Mechanical throttle activation (or second technician)

Requirements
- Vehicle stationary
- Vehicles with automatic transmission: place Transmission Range selector lever in "P" or "N" position.
- ALL electrical consumers switched OFF.
- A/C switched OFF (if installed)
- Throttle angle less than 10 angel degree % Display group 03, Display field 3
- Intake Air Temperature less than 90 °C See Display group 04, display field 4
- Coolant Temp. less than 95 °C See Display group 04, display field 3

Test sequence
- Connect VAG 1551/1552 Scan Tool. [1][2][3][4]Reading and Clearing Diagnostic Trouble Codes
- Switch ON ignition but do NOT start engine.
- Press 0 and 1 buttons to select "Engine Electronics" address word 01.

Work step 1: Check DTC memory

Indicated on display (example only)


06A906018AB Motronic M5.9.2 HS V061 ->
Coding 00000 WSC 00000


- Press -> button.

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 2 buttons to select Function 02: "Check DTC memory."
- Press -Q- button to confirm input.

The number of malfunctions stored


X DTCs recognized!


or

"No DTC recognized!" will be shown on the display.

If there is a stored malfunction:
- Eliminate all displayed malfunctions using the appropriate DTC table:
- P0 codes. P Code Charts
- P1 codes. P Code Charts

If no malfunction(s) stored
- Press -> button.

Work step 2: Erase DTC memory

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 5 buttons to select Function 05: "Erase DTC memory."
- Press -Q- button to confirm input.


NOTE: The Readiness code is reset or erased after DTC memory is erased.


Indicated on display


Rapid data transfer ->
DTC memory is erased!


NOTE: If the ignition is switched OFF between "Check DTC memory" and "Erase DTC memory" the DTC memory will not be erased.


- Press -> button.

Work step 3: Matching the Throttle Control Module to the Engine Control Module

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 4 buttons to select Function 04: "Basic setting."
- Press -Q- button to confirm input.

Indicated on display


Basic setting HELP
Input Display group number XXX


- Press 0, 6 and 0 buttons to select "Display group 60"
- Press -Q- button to confirm input

Indicated on display (1 to 4 = Display fields)


System in basic setting 60 ->
1 2 3 4


- Check specifications in display field 3 and 4:







- Terminate "Basic setting" Function by pressing -> button.
- You must wait a minimum of 30 seconds before pressing the -> button.

Work step: 4

- Start engine and let run at idle.


NOTE:
- Do NOT switch the engine OFF during the test sequence.


Work step 5: Oxygen sensor control operating condition, checking

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 8 buttons to select Function "Read measuring value block."
- Press -Q- button to confirm input

Indicated on display


Read measuring value block
Input Display group number XXX


- Press 0, 3 and 0 buttons to select "Display group 30."
- Press -Q- button to confirm input.

Indicated on display (1 to 4 = Display fields)


Read measuring value block 30 ->
1 2 3 4



- Increase engine speed between 1800 and 2200 RPM and check specifications.







Relevance of 3 digit number block in display fields 1...2







If specifications not obtained:
- Check DTC memory.

If specifications obtained
- Continue maintaining engine speed between 1800 and 2200 RPM.
- Press -> button.

Work step 6: Oxygen sensor aging diagnostic (period duration monitoring)

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 4 buttons to select Function 04 "Basic setting."
- Press -Q- button to confirm input.

Indicated on display


Basic setting HELP
Input Display group number XXX


- Press 0, 3 and 4 buttons to select "Display group 34."
- Press -Q- button to confirm input.

Indicated on display (1 to 4 = Display fields)


System in basic setting 34 ->
1 2 3 4


- Maintain engine speed between 2200 and 2800 RPM until value in display field 4 switches from "Test OFF" to "Test ON."
- Three Way Catalyst temperature must be greater than 352 °C
- Continue maintaining engine speed between 2200 and 2800 RPM until Display field 4 indicates specified value "B1-S1 OK."







If specifications not obtained
- Check DTC memory.

If specification obtained
- Maintain engine speed between 2200 and 2800 RPM.

Work step 7: Three Way Catalytic converter diagnostic

Indicated on display


Basic setting
Input Display group number XXX


- Press 0, 4 and 6 buttons to select "Display group 46"
- Press -Q- button to confirm input.

Indicated on display (1 to 4 = Display fields)


System in basic setting 46 ->
1 2 3 4

- Maintain engine speed between 2700 and 3300 RPM until display in field 4 jumps from "Test OFF" to "Test ON."
- Three Way Catalyst temperature must be greater than 352 °C.
- Continue maintaining engine speed between 2700 and 3300 RPM until specified value "Cat B1 .OK" appears in Display field 4.


NOTE: The Three Way Catalytic converter diagnostic takes approx. 60 seconds.







If specifications not obtained
- Check DTC memory.

If specification obtained
- Remove VAG 1788/10 engine speed adjuster from throttle pedal (if installed).
- Press C button on Scan Tool.

Work step 8: Fuel tank vent system diagnostic


NOTE: Engine must not be under load during this diagnostic or it will be interrupted and will not start again until the engine is revved-up.


Requirements
- Throttle valve angle less than 10 °C See Display group 03, display field 3
- Intake Air Temperature less than 90 °C See Display group 04, display field 4
- Engine Coolant Temperature less than 95 °C See Display group 04, display field 3

Work sequence

- Run engine for 30 seconds at idle and check specifications.

Indicated on display


Basic setting
Input Display group number XXX


- Press 0, 7 and 0 buttons to select "Display group 70"
- Press -Q- button to confirm input

Indicated on display (1 to 4 = Display fields)


System in basic setting 70 ->
1 2 3 4


When the diagnostic is initiated by the Engine Control Module, the value in display field 4 will jump from "Test OFF" to "Test ON."
- Run engine at idle until specification: "EVAP OK" appears in field 4.







If specifications not obtained, check DTC memory.
If specification is obtained, press button 3 (VAG 1551) or t button (VAG 1552).

Indicated on display (1 to 4 = Display fields)


System in basic setting 71 ->
1 2 3 4


- Run engine for 30 seconds at idle and check specifications.

When the diagnostic is initiated by the Engine Control Module, the value in display field 4 will jump from "Test OFF" to "Test ON."
- Let engine run at idle until specified value "SYST. OK" appears in display field 4.







If specifications not obtained
- Check DTC memory. Reading Diagnostic Trouble Codes

If specification obtained
- Press C button on Scan Tool.

Work step: 9 : Secondary Air Injection system diagnostic

Indicated on display


Basic setting
Input Display group number XXX


- Press 0, 7 and 7 buttons to select "Display group 77"
- Press -Q- button to confirm input

Indicated on display (1 to 4 = Display fields)


System in basic setting 77 ->
1 2 3 4


When the diagnostic is initiated by the Engine Control Module, the value in display field 4 will jump from "Test OFF" to "Test ON."

- Let engine continue to idle until specified value "SYST. OK" appears in display field 4.







If specifications not obtained:
- Check DTC memory.

If specification obtained:
- Press -> button.

Indicated on display


Rapid data transfer HELP
Select function XX


- Press 0 and 6 buttons to select Function 06 "End output."
- Press -Q- button to confirm input.

Work step 10: Display Readiness code

- Display the Readiness code. Readiness Code Reading