Readiness Code, Generating
Readiness code, generating
Special Tools and Equipment
- VAG1788/10 RPM adjuster
Requirements
- Electrical consumers switched off (radiator fan must NOT run during test).
- A/C system switched on.
- Vehicles with automatic transmission Selector lever in P or N.
- Coolant temperature at least 80°C See Display group 4, display field 3.
Important: Drive engine warm via road test if possible.
NOTE: If, during a work step, the test result is indicated as "OK" immediately after selecting a display group, the test has already been carried out and it is OK to continue on to the next work step.
Work step 1: Check DTC Memory
Test requirement
- Ignition switched on.
- Connect VAS5051 tester or VAG1551 scan tool and select the control module for engine electronics using "address word" 01. [1][2]Scan Tool Connecting and Initial Checks
When indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -2- to select "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 check DTC memory as a control measure.
If no DTCs are stored:
- Press -> button.
Work step 2: Erase DTC Memory
Test requirement
- Engine not running, ignition switched on.
When indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -5- to select "Erase DTC memory" and press -Q- button to confirm input.
NOTE: When DTC memory is erased, readiness code is reset and must therefore be re-generated.
When indicated on display:
Rapid data transfer ->
DTC Memory is erased
- Press -> button.
Work step 3: Adapt throttle valve control module to Engine Control Module (ECM)
Test requirement
- Engine not running, ignition switched on.
When indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4- to select "Initiate basic setting" and press -Q- button to confirm input.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -6- and -0- to select "display group number 060" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 60 ->
1 2 3 4
- Check specified value in display field 4.
Display group 060: Adaptation of throttle valve control module
Display Group 060:
If specified value "ADP OK" is obtained:
- Press -C- button.
Work step 4: Kick down function, adapting
Test requirement
- Engine not running, ignition switched on.
When indicated on display:
Initiate basic setting Q
Input display group number XXX
- Press buttons -0-, -6- and -3- to select "display group number 063" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 63 ->
1 2 3 4
NOTE: There will be a prompt. "Activate kick-down"
- Depress accelerator pedal completely, past kick down point, and hold down.
NOTE: During adaptation of the kick down point, the VAG1551 will display "Kick down ADP in progress". After successful adaptation of the kick down point, the VAG1551 will display "kick down ADP OK".
- Check specified value in display field 4.
Display group 063: Kick down function, adapting
Display Group 063:
If specified value "ADP OK" is obtained:
- Press -C- button.
Work step 5: Check operating condition of oxygen sensor control
- Start engine (for a vehicle with manual transmission: engage clutch).
NOTE: After starting engine, it may be necessary to select the Engine Control Module (ECM) again using "address word" 01 and the function "Initiate basic setting" using "04".
- Install VAG1788/10 RPM adjuster on the accelerator pedal and raise the engine speed.
- Specification: 2200 RPM
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -0- to select "display group number 030" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 30 ->
1 2 3 4
- Check oxygen sensor status in display fields 1 to 4.
NOTE: A few minutes may pass until a diagnostic result is reached.
Display group 030: Oxygen sensor status with engine at idle
Display Group 030:
Significance of 3 digit indications in display group 030
Work step 6: Diagnostic of oxygen sensor aging before catalytic converter
Test requirement
- Engine continues to run at 2200 RPM.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -4- to select "display group number 034" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 34 ->
1 2 3 4
- Check specified value in display field 4 after indication "Test ON" appears:
NOTE: A few minutes may pass until a diagnostic result is reached.
Display group 034: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 1)
Display Group 034:
If specified value "B1-S1 OK" is obtained:
- Press -C- button.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -5- to select "display group number 035" and press -Q- button to confirm input.
If specified value "B2-S1 OK" is obtained:
- Press -C- button.
When indicated on display:
System in Basic Setting 35 ->
1 2 3 4
- Check specified value in display field 4.
Display group 035. Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 2)
Display Group 035:
Work step 7: Diagnostic of operational readiness of oxygen sensors behind catalytic converter
Test requirement
- Engine continues to run at 2200 RPM.
When indicated on display:
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.
When indicated on display:
System in Basic Setting 36 ->
1 2 3 4
- Check specified values in display fields 2 and 4.
Display group 036: Operational readiness of the oxygen sensor behind catalytic converter (bank 1 and bank 2)
Display Group 036:
If specified value "B1-S1 OK" is obtained:
- Press -C- button.
Work step 8: Diagnostic of oxygen sensor control system
Test requirement
- Engine continues to run at 2200 RPM.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -7- to select "display group number 037" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 37 ->
1 2 3 4
- Check specified value in display field 4.
Display group 037: Diagnostic of oxygen sensor control system (Bank 1)
Display Group 037:
If specified value "Syst. OK" is obtained:
- Press -C- button.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -3- and -8- to select "display group number 038" and press -Q- button to confirm input.
If specified value "Syst. OK" is obtained:
- Press -C- button.
When indicated on display:
System in Basic Setting 34 ->
1 2 3 4
- Check specified value in display field 4.
Display group 038: Diagnostic of oxygen sensor control system (Bank 2)
Display Group 038:
Work step 9: Diagnostic of oxygen sensor aging behind catalytic converter
Test requirement
- Engine continues to run at 2200 RPM.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -3- to select "display group number 043" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 43 ->
1 2 3 4
- Check specified value in display field 4.
Display group 043: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 1)
Display Group 043:
If specified value "B1-S1 OK" is obtained:
- Press -C- button.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -4- to select "display group number 044" and press -Q- button to confirm input.
If specified value B2-S2 OK" is obtained:
- Press -C- button.
When indicated on display:
System in Basic Setting 44 ->
1 2 3 4
- Check specified value in display field 4.
Display group 044: Oxygen sensor aging diagnostic oxygen sensor behind catalytic converter (bank 2)
Display Group 044:
Work step 10: Diagnostic of catalytic converter
Test requirement
- Engine continues to run at 2200 RPM.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -5- to select "display group number 046" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 46 ->
1 2 3 4
- Check specified value in display field 4.
NOTE: Catalytic converter diagnostic lasts approx. 60 seconds.
Display group 046: Diagnostic of catalytic converter (bank 1)
Display Group 046:
If specified value "Cat B1 OK" is obtained:
- Press -C- button.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -4- and -7- to select "display group number 047" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 47 ->
1 2 3 4
- Check specified value in display field 4.
Display group 047: Diagnostic of catalytic converter (bank 2)
Display Group 047:
If specified value "Cat B2 OK" is obtained:
- Press -C- button.
Work step 11: Diagnostic of tank ventilation valve
- Remove the VAG1788/10 RPM adjuster and leave engine running at idle.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -7- and -0- to select "display group number 070" and press -Q- button to confirm input.
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 if indication switches from "Test ON" to "Test OFF", depress accelerator pedal briefly, test will be repeated.
Display group 070: Diagnostic of tank ventilation valve
Display Group 070:
If specified value "TW OK" is obtained:
- Press -> button.
Work step 12: Diagnostic of tank seal
Test requirements
- Engine running at idle:
- Intake Air Temperature (IAT) less than 95°C = display group 004, display field 4.
- Coolant temperature at least 80°C = Display group 4, display field 3
- Fuel filler cap opened briefly (to reduce pressure).
When indicated on display:
Basic Setting 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
NOTE:
- Test lasts approx. 90 seconds.
- When the diagnostic of tank seal is performed several times in a row, the fuel filler cap must be opened briefly before each test to release pressure.
- Check specified value in display field 4 after indication "Test ON" appears:
Display group 071: Diagnostic of tank seal
Display Group 071:
If specified value "Syst. OK" is obtained:
- Press -C- button.
Work step 13: Diagnostic of Secondary Air Injection (AIR) system
Test requirement
- Engine running at idle:
NOTE: During diagnostic of the Secondary Air Injection (AIR) system, the Secondary Air Injection (AIR) pump will run for several seconds.
When indicated on display:
Basic Setting Q
Input display group number XXX
- Press buttons -0-, -7- and -7- to select "display group number 077" and press -Q- button to confirm input.
When indicated on display:
System in Basic Setting 77 ->
1 2 3 4
- Check specified value in display field 4 after indication "Test ON" appears:
NOTE: Secondary Air Injection (AIR) system test lasts approx. 60
seconds.
Display group 077: Secondary Air Injection (AIR) system diagnostic
Display Group 077:
If specified value "Syst. OK" is obtained:
- Press -> button.
Indicated on display (function selection):
Rapid data transfer HELP
Select function X
Work step 14: Readiness code, reading
- Read readiness code Readiness Code, Function