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Generate Readiness Code



Readiness Code, Generating

Requirements
- Vehicle stationary
- Electrical consumers switched off (radiator coolant fan must NOT run during test).
- A/C switched off.
- Vehicles with automatic transmission: Selector lever in P or N.

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 step.

Operation 1: Check DTC Memory

Requirement
- Engine not running, ignition switched on.
- Connect VAS5051 tester, Vehicle Diagnostic, Testing and Information System VAS 5051, Connecting and Selecting Functions and select vehicle system "01 - Engine electronics". Ignition must be switched on for this.







Display on VAS5051:
- In selection -1-, click on 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
- Perform next work step.

Operation 2: Erase DTC Memory

Requirement
- Engine not running, ignition switched on.







Display on VAS5051:
- In selection -1-, click on diagnostic function "05 - Check DTC memory".

NOTE: When the DTC memory is erased, the readiness code is reset and must therefore be re-generated.







Display on VAS5051:
1 - no indication (before erasing)
or
- DTC memory erased

2 - NOTE: Perform the function? Data is being erased.

- Press on "OK" button in display -2-.
- Click on <- button
- Perform next work step.

Operation 3: Adapt throttle valve control module to Engine Control Module (ECM)

Requirement
- Engine not running, ignition switched on.







Display on VAS5051:
- In selection -1-, click on diagnostic function "04 - Basic Setting".







Display on VAS5051:
1 - Enter display group - Select function "060" in field -2- for "display group number 060" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Check indication in display fields 3 and 4.







Note for display field 3: Different numbers are shown in display field 3 during adaptation that represent the current adaptation condition. It is not particularly important how the adaptation step counter (display field 3) behaves during adaptation, but rather that display field 4 indicates the specification "ADP OK" after adaptation.

If specified value "ADP OK" is obtained:
- Click on <- button

Operation 4: Kick down function, adapting 1)
1) Only vehicles with automatic transmission

Requirement
- Engine not running, ignition switched on.







Display on VAS5051:
1 - Enter display group
- Select function "063" in button field -2- for "display group number 063" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.

NOTE: There will be a prompt: "Operate kickdown".

- 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 indication in display field 4.







Note for display field 4: "ERROR" can be indicated, for example, if the accelerator pedal is not immediately pressed in response to a request by the tester or if the accelerator pedal is released while adaptation is running despite the fact that adaptation is not yet complete. In both cases, "Basic Setting" must be exited and the adaptation must be performed again.

If specified value "ADP OK" is obtained:
- Click on <- button; perform next work step.

Operation 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.

Requirement
- Engine running at idle:







Display on VAS5051:
1 - Enter display group
- Select function "030" in button field -2- for "display group number 030" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Check indication in display fields 1 and 2.

NOTE:
- Increase engine speed to obtain specified values faster.
- "Oxygen sensor status" indicates status of oxygen sensor control and oxygen sensors.












NOTE:
- The first position of the 3 digit indication (heating) fluctuates between 0 and 1 at certain operation points.
- Oxygen sensor control of oxygen sensor behind catalytic converter (bank 1, sensor 2) is not active without engine load, meaning that the third position of the 3-digit display is 0.

- 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.
- Click on <- button
- Perform next work step.

Operation 6: Diagnostic of oxygen sensor control system before catalytic converter

Requirement
- Engine running at idle







Display on VAS5051:
1 - Enter display group
- Enter "107" in button field -2- for "display group number 107" and press Q button to confirm input.







Display on VAS5051:
- Check indication in display field 4.







If specified value "Syst. OK" is obtained:
- Click on <- button
- Depress accelerator pedal completely (swiftly) and then release it (brief acceleration of at least 3000 RPM).

CAUTION: The test sequence cannot be continued successfully without this brief acceleration.

Operation 7: Diagnostic of oxygen sensor aging before catalytic converter







Display on VAS5051:
1 - Enter display group
- Select function "034" in button field -2- for "display group number 034" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Depress accelerator pedal and brake pedal at same time, engine speed increases to approx. 2300 RPM.

Requirement
- Accelerator pedal and brake pedal depressed at the same time, engine runs at approx. 2300 RPM.

- Check indication in display field 4.







If specified value "B1-S1 OK" is obtained:
- Click on <- button
- Perform next work step.

Operation 8: Diagnostic for operational readiness of oxygen sensor behind catalytic converter

Requirement
- Engine running at idle







Display on VAS5051:
1 - Enter display group
- Select function "036" in button field -2- for "display group number 036" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Check indication in display field 2.







If specified value "B1-S2 OK" is obtained:
- Click on <- button
- Perform next work step.

Operation 9: Diagnostic of oxygen sensor control system behind catalytic converter

Requirement
- Engine running at idle







Display on VAS5051:
1 - Enter display group
- Select function "037" in button field -2- for "display group number 037" and press -Q- button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Check indication in display field 4.







If specified value "Syst. OK" is obtained:
- Click on <- button
- Perform next work step.

Operation 10: Diagnostic of oxygen sensor aging behind catalytic converter







Display on VAS5051:
1 - Enter display group
- Select function "043" in button field -2- for "display group number 043" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Depress accelerator pedal and brake pedal at the same time, engine speed increases to approx. 2300 RPM.

Requirement
- Accelerator pedal and brake pedal depressed at the same time, engine runs at approx. 2300 RPM.

- Check indication in display field 4.







If specified value "B1-S2 OK" is obtained:
- Click on <- button
- Perform next work step.

Operation 11: Diagnostic of catalytic converter







Display on VAS5051:
1 - Enter display group
- Select function "046" in button field -2- for "display group number 046" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Depress accelerator pedal and brake pedal at same time, engine speed increases to approx. 2000 RPM.

Requirement
- Accelerator pedal and brake pedal depressed at the same time, engine runs at approx. 2000 RPM.

- Check indication in display fields 2 and 4.







If specified value "Cat B1 OK" is obtained:
- Click on <- button

Operation 12: Diagnostic of tank ventilation valve

Requirement
- Engine running at idle







Display on VAS5051:
1 - Enter display group
- Select function "070" in button field -2- for "display group number 070" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.
- Check indication in display field 4.







If specified value "TVV OK" is obtained:
- Click on <- button
- Perform next work step.

Operation 13: Diagnostic of tank seal

Requirement
- Engine running at idle:
- Intake air temperature less than 95 degrees C (Display group 4, display field 4)
- Coolant temperature less than 105 degrees C (display group 4, display field 3)







Display on VAS5051:

NOTE: After starting the 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".

1 - Enter display group
- Enter "7" in button field -2- for "display group number 191" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.







NOTE:
- Tank seal test duration is approx. 60 seconds.
- 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.
- Click on <- button.
- Perform next operation.

Operation 14 Diagnostic of Secondary Air Injection (AIR) system

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

Requirement
- Depress accelerator pedal and brake pedal simultaneously, engine runs at approx. 2000 RPM.







Display on VAS5051:
1 - Enter display group
- Select function "077" in button field -2- for "display group number 077" and press Q button to confirm input.







Display on VAS5051:
- Activate basic setting by pressing button A.

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







NOTE: If indication in display field 4 jumps from "Test ON" to "Test OFF" during test (e.g. if RPM range is left) and then will not 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.

Operation 15: Read readiness code
- Read readiness code. Read Readiness Code
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