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Home >> Audi >> 2003 >> A6 Quattro Sedan (4B4) V8-4.2L (AWN) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Monitors, Trips, Drive Cycles and Readiness Codes >> Audi Drive Cycle/Readiness Code >> With Manufacturer's Scan Tool >> Readiness Code, Generating

Readiness Code, Generating




Readiness code, generating

Required special tools and test equipment







- VAG 1788/10 RPM adjuster

Requirements

- Engine off
- 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 VAS 5051 or VAG 1551 Scan Tool to vehicle and select control module for engine electronics using "address word" 01, [1][2]Scan Tool Connecting and Initial Checks

The ignition is switched on.

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
- 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 re-generated.


When indicated on display


Rapid data transfer ->
DTC memory is erased


- Press -> button.

The readiness code can be generated in two methods:
- The control module executes exhaust relevant tests during driving cycles at various load conditions, therefore the readiness code is self-generated.

or

- Generate readiness code as follows.

Work step 3: Diagnostic of EVAP canister purge regulator valve.

Test requirements
- Engine at idle
- Coolant temperature greater than 85 ° C (185 ° F) (display group 004, display field 3)

Indicated on display


Rapid data transfer HELP
Select function XX


- Press button -0- and -4- to select function "Basic Setting" and confirm input with -Q- button.

Indicated on display


System in Basic Setting Q
Input display group number XXX


- Press button -0-, -7- and -0- to select "display group number 070" and confirm input with -Q- button.

When indicated on display


System in Basic Setting 70 ->
1 2 3 4


- Check specified value in display field 4:







If the specified value "EVAP OK" is reached:
- Press -C- button

Work step 4: Diagnostic of tank leak test

Test requirements
- Engine at idle
- Coolant temperature greater 85°C (Display group 004, display field 3)
- Intake air temperature less 95°C (Display group 004, 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 is approximately 60 seconds.







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

Work step 5: Diagnostic of fuel supply system
- 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:







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

Work step 6: Diagnostic 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.







- Press -C- button.
- Press buttons -0-, -4-, and -2- to select "display group number 042" and confirm input with -Q- button.







- Press -C- button.

Work step 7: Diagnostic of oxygen sensor before catalytic converter

Test requirements

- Increase RPM until exhaust temperature reached 200 ° C in display field 2

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:







If specified value of "B1-S1 OK" is reached:
- Press -C- button.
- Press buttons -0-, -3-, and -5- to select "display group number 035" and confirm with -Q- button.







If specified value of "B2-S1 OK" is reached:
- Press -C- button.

Work step 8: Diagnostic of operational readiness of oxygen sensors after TWC

- Engine at idle

Indicated on Display


System in Basic Setting Q
Input display group number XXX


- Input -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.







If the specified value in display field 2 of "B1-S2 OK" and in display field 4 "B2-S2 OK" is reached:
- Press -C- button.


Work step 9: Diagnostic of oxygen sensor control system

- 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.







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.







If specified value of "System OK" is reached:
- Press -C- button.

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

- Increase engine speed until exhaust temperature of 250 ° C is reached in display field 2.

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.







If specified value of "B1-S2 OK" is reached:
- Press -C- button.
- Press buttons -0-, -4-, and -4- to select display group number 044 and confirm input with -Q- button.







If specified value of "B2-S2 OK" is reached:
- Press -C- button.

Work step 11: Diagnosis catalytic converter

- Increase engine speed to approximately 1800 to 2400/RPM.
- Catalyst temperature greater than 540 ° C display field 2.
- Return engine to idle. Test starts when catalyst temperature falls below 540 ° C but remains above 400 ° C.

Indicated on display


System in Basic Setting Q
Input display group number XXX


- Press button -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 approximately 60 seconds.







If the specified value "Cat B1 OK" is reached:
- Press -C- button
- Press button -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 12: Diagnostic of Secondary Air Injection (AIR) system

- Increase engine speed to approximately: 1800 - 2400/RPM

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 "System OK" is reached:
- Press -C- button.
- Press button -0-, -7-, and -8- to select "display group number 078" and confirm input with -Q- button.







If the specified value of "System OK" is reached:
- Press -> button.

Work step 13: Readiness code, displaying

- Display readiness code again (measure of control), Readiness Code Reading


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