Readiness Code, Generating
Readiness Code, Generating
Required Special Tools And Test Equipment
- VAG1788/10 RPM adjuster
Requirements
- Electrical consumers switched off (radiator fan must NOT run during test)
- Coolant temperature min. 80 °C (185 °F)
Work step 1: Check DTC memory
- Connect Vehicle Diagnostic, Test and Information system VAS5051 or VAG1551 scan tool to vehicle and select control module for engine electronics using "address word". The ignition is switched on. Connecting VAS 5051 Scan Tool
When indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -2- to select function "Check DTC Memory" and press -Q- button to confirm input.
Number of stored DTCs or "No DTC recognized" will be indicated on display.
X DTC recognized!
If a DTC is stored:
- Repair malfunction, erase DTC memory. Road test vehicle and then re-check DTC memory as a control measure.
If no DTC is stored:
- Press button.
Work Step 2: Erase DTC Memory
Test Requirements
- Ignition switched on
When indicated on display
Rapid data transfer HELP
Select function XX
- Press button -0- and -5- to select function "Erase DTC Memory" and press -Q- button to confirm input.
NOTE: When DTC memory is erased, readiness code is reset and must therefore be regenerated.
When indicated on display
Rapid data transfer ->
DTC memory is erased
- Press -> button.
Work step 3: Adaptation Throttle Valve Control Module to Engine Control Module (ECM)
Test requirements
- Ignition switched on.
When indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons "04" for the function "Basic Setting" and press Q button to confirm input.
When indicated on display
System in Basic Setting Q
Input display group number XXX
- Input "060" for "display group number 60" and press Q button to confirm input.
When indicated on display
System in Basic Setting 60 ->
1 2 3 4
- Check readiness code in display field 3 and 4:
Display Group 060:
If specified value "ADP. OK" is obtained:
- Press -C- button.
Work step 4: Diagnosis of EVAP canister purge regulator valve
- Start engine (vehicles with manual transmission depress clutch pedal)
NOTE: If necessary, ECM must be re-selected with the "address word" following engine start, and the function "initiate basic setting" selected with
Test requirements
- Engine at idle
- Coolant temperature greater than 85 °C (display group 4, display field 3)
Indicated on display
Rapid data transfer HELP
Select function XX
When indicated on display
System in Basic Setting 70 ->
1 2 3 4
- Check specified value in display field 4:
NOTE: If test is not initiated or the display jumps from "Test ON" to "Test OFF" slightly accelerate engine briefly, test will be repeated.
- Press button -0-, -7- and -0- to select "display group number 070" and confirm input with -Q- button.
Display Group 070:
If the specified value "EVAP OK" is reached:
- Press -C- button
Work step 5: Diagnosis of tank leak test
NOTE: This diagnostic is locked the first 230 seconds after engine is started.
Test requirements
- Engine at idle
- Coolant temperature greater 85 °C (Display group 4, display field 3)
- Intake air temperature less 95 °C (Display group 4, display field 4)
When indicated on display
System in Basic System Q
Input display group number XXX
- Press buttons -0-, -7- and -1- to select display group number "071" and press -Q- button to confirm input.
When indicated on display
System in Basic Setting 71 ->
1 2 3 4
During test is "Test ON" displayed in display field 4. Continue to hold test conditions until a diagnostic result is displayed in display field 4.
- Check specified value in display field 4:
NOTE:
- Test duration for tank leak test takes approximately 60 seconds.
- Should the diagnosis be repeated several times, open fuel filler cap each time to release pressure in tank.
Display Group 71:
If specified value in display field "System OK" is reached:
- Press -C- button.
Work step 6: Diagnosis of fuel supply system
Test requirements
- Engine at idle
- Oxygen sensor control active when indicated on display
System in Basic System Q
Input display group number XXX
- Press buttons -1-, -0-and -7- to select display group number 107 and confirm with -Q- button.
When indicated on display
System in Basic Setting 107 ->
1 2 3 4
- Check specified values in display field 4.
NOTE:
- If display "Test ON" does not appear in the display field, switch the engine off and restart afterward and repeat work step 6. (Diagnostic of fuel supply system)
- After the engine has been started it might be necessary to select "Address word 01" and initiate the function "04 Basic Setting" again.
Display Group 107:
If specified value in display "System Ok" is reached:
- Press -C- button
Work step 7: Diagnosis of oxygen sensor heater
When indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-,-4- and -1- to select display group number 041 and confirm with - Q- button.
When indicated on display
System in Basic Setting 41 ->
1 2 3 4
- Check specified value in display field 1 and 3:
NOTE: Increasing engine speed accelerates the obtaining of specified values.
Display Group 041:
- Press -C- button.
- Press buttons -0-, -4- and -2- to select "display group number 042" and confirm input with -Q- button.
Display Group 042:
- Press -C- button.
Work step 8: Diagnosis of oxygen sensor aging before catalytic converter
Test requirements
- Engine running at 1900 - 2200 RPM
Indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -4- to select "display group number 034" and confirm with -Q- button.
Indicated on display
System in Basic Setting 34 ->
1 2 3 4
- Check specified value in display field 4:
Display Group 034:
if specified value "B1-S1 OK" is reached.
- Press -C- button.
Test Requirements
- Engine running at 1900 - 2200 RPM
- Press buttons -0-, -3- and -5- to select "display group number 035" and confirm with - Q- button.
Display Group 35:
If specified value of "B2-S1 OK" is reached:
- Press -C- button.
Work step 9: Diagnosis of operational readiness of oxygen sensors behind TWC
Test requirements
- Engine at idle
Indicated on Display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -6- to select "display group number 036" and press -Q- button to confirm input.
Indicated on display
System in Basic Setting 36 ->
1 2 3 4
- Check specified values in display fields 2 and 4.
Display Group 036:
If the specified value in display field 2 "B1-S2 OK" and in display field 4 "B2-S2 OK" is reached:
- Press -C- button.
Work step 10: Diagnosis of oxygen sensor control system
Test requirements
- Engine at idle
Indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -7- to select "display group numbers 037" and confirm with -Q- button.
Indicated on display
System in Basic Setting 37 ->
1 2 3 4
- Check specified value in display field 4.
Display Group 037:
If specified value of "System OK" is reached:
- Press-C- button.
- Press buttons -0-, -3- and -8- to select "display group number 038" and confirm input with -Q- button.
Display Group 038:
If specified value of "System OK" is reached:
- Press -C- button.
Work step 11: Diagnosis of oxygen sensor aging behind catalytic converter
Test requirements
- Engine running at 1900 - 2200 RPM
Indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -3- to select "display group number 043" and confirm input with -Q- button.
Indicated on display
System in Basic Setting 43 ->
1 2 3 4
- Check specified value in display field 4.
Display Group 043:
If specified value of "B1-S2 OK" is reached:
- Press -C- button.
Test requirements
- Engine running at 1900 - 2200 RPM
- Press buttons -0-, -4- and -4- to select "display group number 044" and confirm input with -0- button.
Display Group 044:
If specified value of "B2-S2 OK" is reached:
- Press -C- button.
Work step 12: Diagnosis of catalytic converter
Test requirements
- Engine running at 1900 - 2200 RPM
Indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -6- to select "display group number 046" and confirm input with -Q- button.
Indicated on display
System in Basic Setting 46 ->
1 2 3 4
- Check specified value in display field 4.
NOTE: The test duration for catalytic converter diagnosis takes approx.: 60 seconds.
Display Group 046:
If the specified value "Cat B1 OK" is reached:
- Press -C- button
- Engine running at 1900 - 2200 RPM
- Press buttons -0-, -4- and -7- to select "display group number 047" and confirm input with -Q- button.
If the specified value "Cat B2 OK" is reached:
- Press -C- button
Work step 13: Diagnosis of Secondary Air Injection (AIR) system (only on vehicles with automatic transmission), on vehicles with manual transmission continue with work step 14
NOTE: The secondary air pump runs for a few seconds during the secondary air injection system diagnosis.
- Engine at idle speed
Indicated on display
System in Basic Setting Q
Input display group number XXX
- Press buttons -0-, -7- and -7- to select "display group number 077" and confirm input with -Q- button.
Indicated on display
System in Basic Setting 77 ->
1 2 3 4
- Check specified value in display field 4.
NOTE: The test duration for the secondary air injection system takes approximately 60 seconds.
If the specified value of "Syst. OK" is reached:
- Press-C-button.
- Press buttons -0-, -7- and -8- to select "display group number 078" and confirm input with -Q- button.
If the specified value of "Syst. OK" is reached:
- Press -> button.
Work step 14: Readiness code, displaying
- Display readiness code again (measure of control). Readiness Code, Function