Readiness Code, Generating

Generate Readiness Code

Special tools and equipment






- Speed regulator VAG 1788/10

Requirements:
- Vehicle is stationary
- Electrical consumers switched off (radiator fan must not run during the test)
- Air conditioner switched off
- Coolant temperature at least 80 degree C, See Display group 004, Display zone 3.

Important note: Run engine till warm (preferably with test drive).

Note: If during a work step the test result "OK" is indicated immediately after a display group was selected, the test is finalized already. Proceed with the next work step.

Work step 1: check DTC memory

Test requirement:
- Engine not running; ignition switched on.
- Connect the vehicle diagnostic, testing and information system VAS 5051, and select the vehicle system "01 - Engine electronics" from the menu. When doing this the ignition should be switched on.Connecting VAS 5051/VAG1551 Scan Tool






Display on VAS 5051:
- Select diagnosis function "02 - check DTC memory" from the menu -1-.






Display on VAS 5051:
1 - Content of DTC memory:
- 0 faults detected
or
- X faults detected
2 - Identification of fault
- DTC
- Location/cause of fault
- Type of fault

If a fault is stored:
- Rectify fault and erase DTC memory. Then take vehicle for a road test and check DTC memory once again to check for faults.

If no faults are stored:
- Press the <- button.

Work step 2: erase DTC memory

Test requirement:
- Engine not running; ignition switched on.






Display on VAS 5051:
- Select diagnosis function "05 - Erase DTC memory" from the menu -1-.

NOTE: If the DTC memory is erased, the readiness code is set back and therefore has to be regenerated.






Display on VAS 5051:
1 - No display (before erasing memory)
or
- DTC memory is erased
2 - NOTE: Do you now want to implement this function? (Existing data will be erased.)

- Press "OK" in menu -2-.
- Press the <- button.

Work step 3: adjust the throttle valve control part to the engine control module

Test requirement:
- Engine not running; ignition switched on.






Display on VAS 5051:
- Select the diagnosis function "04 - Basic settings" from the menu -1-.






Display on VAS 5051:
1 - Enter display group
(figures up to 255)
- Using the keypad -2-, enter "060" to select Display group 060 and confirm entry with Q button.






Display on VAS 5051:
- Check the readouts in display zones -3- and -4-.

Display Group 060:

If the specification "ADP O.K." is attained:
- Proceed to the next step.

Work step 4: testing operation mode of oxygen sensor control
- Switch ignition off.
- Start the engine (depress clutch pedal on vehicles with manual transmission).

NOTE:
- If the engine is not started after adaptation of the throttle valve control module in diagnostic function "04 -basic setting", an entry into DTC memory may occur.
- If necessary, select the vehicle system "01 - Engine electronics" and diagnosis function "04 - Basic settings" again after starting the engine.

- Apply speed regulator VAG 1788/10 to the accelerator pedal and increase engine speed to 2000 RPM.

Test requirement:
- Engine running at 2000 RPM.






Display on VAS 5051:
- Press the <- button.






Display on VAS 5051:
1 - Enter display group
(max. figures up to 255)
- Using keypad -2-, enter "030" to select Display group 030 and confirm entry with Q button.






Display on VAS 5051:
- Check oxygen sensor status in display zones -1- and -2-.

NOTE: It may take a few minutes before the specified value in display field -2- is reached. If necessary, increase RPM.

Display Group 030:

- Only continue with the test when the displays have indicated "111" in display zone 1 and "110" in display zone 2 at least once.

Work step 5: diagnosis of ageing of oxygen sensor before catalytic converter

Test requirement:
- Engine still running at 2000 RPM.






Display on VAS 5051:
- Press the [up arrow] button four times to advance to Display group 034.
- Check the readout in display zone -4-.

NOTE: It may take a few minutes before a diagnosis result is obtained.

Display Group 034:

If the specification "B1-P1 O.K." is attained:
- Proceed to the next step.

Work step 6: diagnosis of condition of oxygen sensor after catalytic converter

Test requirement:
- Engine still running at 2000 RPM.






Display on VAS 5051:
- Press the [up arrow] button twice to advance to Display group 036.
- Check the readout in display zone -2-:

Display Group 036:

If the specification "B1-P2 O.K." is attained:
- Proceed to the next step.

Work step 7: diagnosis of oxygen sensor control system

Test requirement:
- Engine still running at 2000 RPM.






Display on VAS 5051:
- Press the [up arrow] button to advance to Display group 037.
- Check the readout in display zone -4-.

Display Group 037:

If the specification "SYST. O.K." is attained:
- Proceed to the next step.

Work step 8: diagnosis of ageing of oxygen sensor after catalytic converter

Test requirement:
- Engine still running at 2000 RPM.






Display on VAS 5051:
- Press the <- button.






Display on VAS 5051:
1 - Enter display group
(figures up to 255)
- Using the keypad -2-, enter "043" to select Display group 043 and confirm entry with Q button.






Display on VAS 5051:
- Check the readout in display zone -4-.

Display Group 043:

If the specification "B1-P2 O.K." is attained:
- Proceed to the next step.

Work step 9: diagnosis of catalytic converter

Test requirement:

Front wheel drive vehicles:
- Engine still running at 2000 RPM.

All wheel drive vehicles:
- Increase engine speed to 2400 RPM
- Engine is running at 2400 RPM

All vehicles






Display on VAS 5051:
- Press the [up arrow] button three times to advance to Display group 046.
- Check the readouts in display zones -2- and -4-:

NOTE: The diagnostic test of the catalytic converter takes approx. 60 seconds.

Display Group 046:

If the specification "Cat B1 O.K. is attained:
- Proceed to the next step.

Work step 10: diagnosis of EVAP canister purge regulator valve

- Remove speed regulator VAG 1788/10 and run engine at idling speed.

Test requirement:
- Engine idling.






Display on VAS 5051:
- Press the <- button.






Display on VAS 5051:
1 - Enter display group
(figures up to 255)
- Using the keypad -2-, enter "070" to select Display group 070 and confirm entry with Q button.






Display on VAS 5051:
- Check the readout in display zone -4-.

NOTE: If the test does not start or if the display jumps from "Test ON" to "Test OFF", press the accelerator briefly. The test will now be repeated.

Display Group 070:

If the specification "TBV O.K." is attained:
- Proceed to the next step.

Work step 11: diagnosis of fuel tank air tightness (Leak Detection)

Test requirements:
- Engine idling.
- Fuel tank filler cap briefly opened (to release pressure)






Display on VAS 5051:
- Press the [up arrow] button to change to Display group 071.
- Check the specified value in display field -4-:

NOTE:
- Test duration is approx. 90 seconds.
- If the leak detection function is performed several times in sequence, the tank filler cap must first be opened briefly every time to release pressure.

Display Group 071:

If the specification "Syst. O.K." is attained:
- Proceed to the next step.

Work step 12: diagnosis of secondary air system

Test requirement:
- Engine idling.

NOTE: The secondary air pump runs for several seconds while the diagnosis of the secondary air system is performed






Display on VAS 5051:
- Press the <- button.






Display on VAS 5051:
1 - Enter display group
(figures up to 255)
- Using the keypad -2-, enter "077" to select Display group 077 and confirm entry with Q key.

- Floor and release the accelerator quickly (short blip of at least 2500 RPM).






Display on VAS 5051:
- Check the readout in display zone -4-.

NOTE: The diagnostic test of the secondary air system takes approx. 60 seconds.

Display Group 077:

If the specification "SYST. O.K." is attained:
- Press the <- button.

Work step 13: reading off readiness code
- Read off the readiness code. Readiness Code Reading