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Readiness Code, Generating



Readiness Code, Generating

Special tools and equipment






- VAG1788/10 RPM adjuster

Requirements
- Vehicle stationary
- Electrical consumers switched off (radiator fan must NOT run during test).
- Coolant temperature at least 80 degree C

Procedure
- Connect VAS5051 tester or VAG1551 scan tool and select the control module for engine electronics using address word 01 Connecting VAS 5051/VAG1551 Scan Tool

Work step 1: Check DTC Memory

- Ignition switched on.

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 and 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

- Ignition switched on.

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.

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)

- Ignition switched on.

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.

Indicated on display:


System in 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.

Indicated on display:


System in Basic Setting 60 ->
1 2 3 4


- Check specified values in display fields 3 and 4


Display Group 060:






If specified value "ADP OK" is obtained:
- Press -C- button.

Work step 4: Diagnostic of tank seal

- Start engine

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".

Test requirements
- Engine running at idle:
- Intake Air Temperature (IAT) less than 95 degree C (display group 4, display field 4)
- Coolant temperature less than 105 degree C (display group 4, display field 3)

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.

Indicated on display:


System in 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.

Indicated on display:


System in Basic Setting 71 ->
1 2 3 4


During test, display field 4 indicates
"Test ON". Maintain test requirements until a diagnostic result is displayed in display field 4.

- Check specified value in display field 4.

NOTE: Tank seal test lasts approx. 60 seconds.


Display Group 071:






NOTE:
If indication in display field 4 jumps from "Test ON" to "Test OFF" during the test and display field 2 indicates "Aborted", repeat "Leak detection diagnostic".
When diagnostic is repeated, it can last up to approx. 60 seconds before indication in display field 4 switches from "Test OFF" to "Test ON".

If specified value "System OK" is obtained in display field 4:
- Press -C- button.

Work step 5: Diagnostic of tank ventilation valve

Test requirements
- Engine running at idle:
- Coolant temperature above 80 degree C (display group 4, display field 3)

Indicated on display:


System in 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.

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:






If specified value "TVV OK" is obtained:
- Press -C- button.

Work step 6: Diagnostic of fuel supply system

- Engine running at idle:
- Oxygen sensor control active

Indicated on display:


System in Basic Setting Q
Input display group number XXX


- Press buttons -1-, -0- and -7- to select "display group number 107" and press -Q- button to confirm input.

Indicated on display:


System in Basic Setting 107 ->
1 2 3 4


- Check specified value in display field 4.


Display Group 107:






If specified value "Syst. OK" is obtained:
- Press -> button.

Work step 7: Checking oxygen sensor heating

- Engine running at 1800 to 2200 RPM.

NOTE: Use VAG1788/10 RPM adjuster to achieve increased engine speed.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.

Indicated on display:


Read Measuring Value Block Q
Input display group number XXX


- Press buttons -0-, -4- and -1- to select "display group number 041" and press -Q- button to confirm input.

Indicated on display:


Read Measuring Value Block 41 ->
1 2 3 4


- Check specified values in display fields 1 and 3

NOTE: Increasing engine speed accelerates the obtaining of specified values.

Display Group 041:






- Press -> button.

Work step 8: Diagnostic of operational readiness of oxygen sensors behind catalytic converter

- Engine running at 1800 to 2200 RPM.

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.

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 value in display field 2.


Display Group 036:






If specified value "B1-S2 OK" is obtained:
- Press -C- button.

Work step 9: Secondary Air Injection (AIR) system diagnostic

NOTE: During diagnostic of the Secondary Air Injection (AIR) system, the Secondary Air Injection (AIR) pump will run for several seconds.

- Engine running at 1800 to 2200 RPM. Be sure not to leave the RPM range 1800 to 2200 RPM during the duration of the Secondary Air Injection (AIR) diagnostic.

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.

Indicated on display:


System in Basic Setting 77 ->
1 2 3 4


- Check specified value in display field 4

NOTE: Secondary Air Injection (AIR) system test lasts approx. 60 seconds.

Display Group 077:






NOTE: If indication in display field 4 jumps from "Test ON" to "Test OFF" during test (e.g. if RPM goes out of range) and then won't switch back to "Test ON", switch ignition off and on again, repeat "Secondary Air Injection (AIR) diagnostic".
When diagnostic is repeated, it can last up to approx. 60 seconds before indication in display field 4 switches from "Test OFF" to "Test ON".

If specified value "Syst. OK" is obtained:
- Press -C- button

Work step 10: Diagnostic of oxygen sensor aging before catalytic converter

Test requirements
- In display group 041, display field 1 must indicate a resistance of less than 2 kOhm.
- Engine running at 1800 to 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 press -Q- button to confirm input.

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 obtained:
- Press -C- button

Work step 11: Diagnostic oxygen sensor control system

- Engine running at 1800 to 2200 RPM

Indicated on display:


System in 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.

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 "Syst. OK" is obtained:
- Press -C- button

Work step 12: Diagnostic of oxygen sensor aging behind catalytic converter

- Engine running at 1800 to 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 press -Q- button to confirm input.

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 B1-S2 OK" is obtained:
- Press -C- button

Work step 13: Diagnostic of catalytic converter

- Engine continues to run at 1800 to 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 press -Q- button to confirm input.

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:






If specified value "Cat B1 OK" is obtained:
- Press -> button.

Work step 14: Readiness code, reading

- Read readiness code Readiness Code Checking
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