Readiness Code, Generating
Readiness Code, Generating
Special Tools and Equipment
- VAG1788/10 RPM adjuster
Requirements
- Vehicle stationary
- Vehicles with automatic transmission Selector lever in P or N.
- Electrical consumers switched off (radiator fan must NOT run during test).
- A/C switched off.
- Coolant temperature at least 80 °C Display group 004, display field 3.
Important: Drive engine warm via road test if possible.
IMPORTANT NOTE: If, during a work step, the test result is indicated as "OK" immediately after selecting a display group, the test has already been carded out and it is OK to continue on to the next work step.
Work step 1: Check DTC Memory
Test requirement:
- Engine not running, ignition switched on.
- Connect VAS5051 tester and select vehicle system "01 - Engine electronics". Ignition must remain switched on for this. Connecting VAS 5051 Scan Tool
Display on VAS5051:
- In selection -1-, click on the diagnostic function "02 - Check DTC memory".
Display on VAS5051:
1 - DTC memory content:
- 0 malfunctions recognized
or
- X malfunctions recognized
2 - Malfunction
- DTC
- malfunction location
- malfunction type
If a DTC is stored:
- Repair malfunction, erase DTC memory. Road test vehicle and then check DTC memory as a control measure.
If no DTCs are stored:
- Click on <- button
Work step 2: Erase DTC Memory
Test requirement:
- Engine not running, ignition switched on.
Display on VAS5051:
- In selection -1-, click on the diagnostic function "05 - Check DTC memory".
NOTE: When DTC memory is erased, readiness code is reset and must therefore be regenerated.
Display on VAS5051:
1 - no indication (before erasing)
or
- DTC memory erased
2 - NOTE: Perform the function? NOTE: Data is being erased!
- Press on "OK" button in display -2-.
- Click on <- button
Work step 3: Adapt throttle valve control module to Engine Control Module (ECM)
Test requirement:
- Engine not running, ignition switched on.
Display on VAS5051:
- In selection -1-, click on the diagnostic function "04 - Basic setting".
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "060" in button field -2- for "display group number 060" and press Q button to confirm input.
Display on VAS5051:
- Check specified values in display fields -3- and -4-.
Display Group 060:
If specified value "ADP OK" is obtained:
- Perform next work step.
Work step 4: Kick down function, adapting (1)
1) Only vehicles with automatic transmission
Test requirement:
- Engine not running, ignition switched on.
Display on VAS5051:
- Press [Up Arrow] button 3 times to change into display group 063.
NOTE: There will be a prompt: "Operate kick down".
- Depress accelerator pedal completely, past kick down point, and hold down.
NOTE: During adaptation of the kick down point, "kick down ADP in progress" will be indicated in display. After successful adaptation of the kick down point, "kick down ADP OK" will be indicated on display.
- Check specified value in display field -4-.
Display Group 063:
If specified value "ADP OK" is obtained:
- Perform next work step.
Work step 5: Check operating condition of oxygen sensor control
- Start engine (for a vehicle with manual transmission: engage clutch).
NOTE: If necessary, vehicle system "01 - engine electronics" and diagnostic function "04 -basic setting" must be selected again after engine start.
- Install VAG1788/10 RPM adjuster on the accelerator pedal and raise the engine speed to 2600 RPM.
Test requirement:
- Engine running at 2600 RPM.
Display on VAS5051:
- Click on <- button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "030" in button field 2- for "display group number 030" and press Q button to confirm input.
Display on VAS5051:
- Check oxygen sensor status in display fields -1- and -2-.
NOTE: A few minutes may pass until a diagnostic result is reached.
Display Group 030:
- Do not start test until indication in display field 1 has reached "111" at least once and indication in display field 2 has reached "110" at least once.
Work step 6: Diagnostic of oxygen sensor aging before catalytic converter
Test requirement:
- Engine continues to run at 2600 RPM.
Display on VAS5051:
- Press [Up Arrow] button 4 times to change into display group 034.
- Check specified value in display field -4-.
NOTE: A few minutes may pass until a diagnostic result is reached.
Display Group 034:
If specified value "BS-S1 OK" is obtained:
- Perform next work step.
Work step 7: Diagnostic of operational readiness of oxygen sensor behind catalytic converter
Test requirement:
- Engine continues to run at 2600 RPM.
Display on VAS5051:
- Press [Up Arrow] button 2 times to change into display group 036.
- Check specified value in display field -2-.
Display Group 036:
If specified value B1-S2 OK" is obtained:
- Perform next work step.
Work step 8: Diagnostic of oxygen sensor control system
Test requirement:
- Engine continues to run at 2600 RPM.
Display on VAS5051:
- Press [Up Arrow] button to change into display group 037.
- Check specified value in display field -4-.
Display Group 037:
If specified value "Syst. OK" is obtained:
- Perform next work step.
Work step 9: Diagnostic of oxygen sensor aging behind catalytic converter
Test requirement:
- Engine continues to run at 2600 RPM.
Display on VAS5051:
- Click on <- button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "043" in button field -2- for "display group number 043" and press Q button to confirm input.
Display on VAS5051:
- Check specified value in display field -4-.
Display Group 043:
If specified value B1-S2 OK" is obtained:
- Perform next work step.
Work step 10: Diagnostic of catalytic converter
Test requirement:
- Engine continues to run at 2600 RPM.
Display on VAS5051:
- Press A button 3 times to change into display group 046.
- Check specified values in display fields -2- and -4-.
NOTE: Catalytic converter diagnostic lasts approx. 60 seconds.
Display Group 046:
If specified value "Cat B1 OK" is obtained:
- Perform next work step.
Work step 11: Diagnostic of tank ventilation valve
- Remove the VAG1788/10 RPM adjuster and leave engine running at idle.
Test requirement:
Engine running at idle:
Display on VAS5051:
- Click on <- button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "070" in button field -2- for "display group number 070" and press Q button to confirm input.
Display on VAS5051:
- Check specified value in display field -4-.
NOTE: If test is not initiated or if indication switches from "Test ON" to "Test OFF", depress accelerator pedal briefly, test will be repeated.
Display Group 070:
If specified value "TVV OK" is obtained:
- Perform next work step.
Work step 12: Diagnostic of Secondary Air Injection (AIR) system
Test requirement:
- Engine running at idle:
Display on VAS5051:
- Click on <- button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "077" in button field -2- for "display group number 077" and press 0 button to confirm input.
Display on VAS5051:
- Depress gas pedal completely (swiftly) and then release it (brief acceleration of at least 2500 RPM).
- Check specified value in display field -4-.
NOTE: Secondary Air Injection (AIR) system test lasts approx. 60 seconds.
If specified value "Syst. OK" is obtained:
- Click on <- button
Work step 13: Read readiness code
- Read readiness code. Readiness Code Reading