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Readiness Code, Generating



Readiness Code, Generating

Preconditions:
- Vehicle stationary.
- Electrical devices switched off (radiator fan must not run during the test).
- Air conditioning switched off.
- Vehicles with automatic transmission: Selector lever in position P or N.

NOTE: If the test result is immediately displayed as "OK" after selecting a display group during an operation, the test has already been performed and you can continue with the next operation.


Operation 1: Checking Diagnostic Trouble Code (DTC) memory

Test conditions:
- Engine stopped, ignition switched on
- Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" in selection. Ignition must be switched on. Connecting VAS 5051 Scan Tool

Display on VAS 5051:







- Under -1- select diagnostic function "02 - Check Diagnostic Trouble Code (DTC) memory".

Display on VAS 5051:







1 - Content of the Diagnostic Trouble Code (DTC) memory:
- 0 DTCs recognized
or
- X DTCs recognized

2 - DTCs
- DTC code
- DTC location
- DTC type

If a DTC is stored:
- Repair DTC and erase Diagnostic Trouble Code (DTC) memory. Perform a road test and check DTC memory again.

If no DTC is stored:
- Press <- button.
- Perform next operation.

Operation 2: Erasing Diagnostic Trouble Code (DTC) memory

Test conditions:
- Engine stopped, ignition switched on

Display on VAS 5051:







- Under -1- select diagnostic function "05 - Erase Diagnostic Trouble Code (DTC) memory".

NOTE: The readiness code is reset when the Diagnostic Trouble Code (DTC) memory is erased and must therefore be reproduced.

Display on VAS 5051:







1 - No display (before erasing)
or
- Diagnostic Trouble Code memory erased

2 - NOTE:
- Is the function to be carried out?
- Data will be erased!

- Press "OK" button in display -2-.
- Press <- button.
- Perform next operation.

Operation 3: Adapting the Throttle Valve Control Module -J338- to the Engine Control Module (ECM)

Test conditions:
- Engine stopped, ignition switched on

Display on VAS 5051:







- Under -1- select diagnostic function "04 - Basic setting".

Display on VAS 5051:







1 - Enter display group
- Enter "060" for "display group number 060" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Check specifications in display zones -3- and -4-.
- Check indication in display fields -3- and -4-.


Display Group 060:






If specification "ADP OK" is obtained:
- Press <- button and perform next operation.

Operation 4: Adapting kick-down function 1)
1) Only on vehicles with automatic transmission.

Test conditions
- Engine stopped, ignition switched on

Display on VAS 5051:







1 - Enter display group
- Enter "063" for "display group number 063" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.

NOTE: You will now be instructed to: "Operate kick down".

- Fully depress accelerator pedal beyond kick-down point and keep it pressed.

NOTE: During the kick-down point adaptation process, "Kick-down ADP is running" is shown on the display. After successful adaptation of the kickdown point "Kick-down ADP OK" appears on the display.

- Check indication in display field -4-.


Display Group 063:






If specification "ADP OK" is obtained:
- Press <- button then perform next operation.

Operation 5: Checking operating status of oxygen sensor control
- Start engine (for vehicles with manual transmision: press clutch pedal).

NOTE: If necessary, after the engine starts reselect vehicle system "01 - Engine electronics" and diagnostic function "04 -Basic setting".

Test conditions:
- Engine at idle

Display on VAS 5051:







1 - Enter display group
- Enter "030" for "display group number 030" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







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

NOTE:
- By increasing the engine speed (RPM) the specified values are achieved quicker.
- The "Oxygen sensor status" indicates the condition of the oxygen sensor control and the oxygen sensor (O2S).


Display Group 030:









- Only continue with test if displays have reached "111" in display zone 1 and "110" in display zone 2 at least once.
- Press <- button.
- Perform next operation.

Operation 6: Diagnosis of oxygen sensor control system before Three Way Catalytic Converter (TWC)

Test conditions:
- Engine at idle

Display on VAS 5051:







1 - Enter display group
- Enter "107" for "display group number 107" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Check indication in display field -4-.


Display Group 107:






If specification "Syst. OK" is obtained:
- Press <- button.
- Abruptly floor accelerator pedal and release again (brief burst of throttle). 3000 rpm, then perform next operation

WARNING: The test procedure cannot continue successfully without this brief burst of throttle.

Operation 7: Diagnosis of aging of oxygen sensor (O2S) before Three Way Catalytic Converter (TWC)

Display on VAS 5051:







1 - Enter display group
- Enter "034" for "display group number 034" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Press accelerator and brake pedal simultaneously, engine speed increases to approx. 2300 rpm.

Test conditions:
- Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2300 rpm.

- Check indication in display field -4-.


Display Group 034:






If specification "B1-P1 OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 8: Diagnosis of oxygen sensor (O2S) condition after Three Way Catalytic Converter (TWC).

Test conditions:
- Engine at idle

Display on VAS 5051:







1 - Enter display group
- Enter "036" for "display group number 036" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Check indication in display field -2-.


Display Group 036:






If specification "B1-P2 OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 9: Diagnosis of oxygen sensor control system after Three Way Catalytic Converter (TWC)

Test conditions:
- Engine at idle

Display on VAS 5051:







1 - Enter display group
- Enter "037" for "display group number 037" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Check indication in display field -4-.


Display Group 037:






If specification "Syst. OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 10: Diagnosis of oxygen sensor (O2S) aging after Three Way Catalytic Converter (TWC)

Display on VAS 5051:







1 - Enter display group
- Enter "043" for "display group number 043" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Press accelerator and brake pedal simultaneously, engine speed increases to approx. 2300 rpm.

Test conditions:
- Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2300 rpm.

- Check indication in display field -4-.


Display Group 043:






If specification "B1-P2 OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 11: Three Way Catalytic Converter (TWC) diagnosis

Display on VAS 5051:







1 - Enter display group
- Enter "046" for "display group number 046" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Press accelerator and brake pedal simultaneously, engine speed increases to approx. 2000 rpm.


Test conditions:
- Accelerator and brake pedal pressed simultaneously, engine runs at approx. 2000 rpm.

- Check specifications in display zones -2- and -4-.
- Check indication in display fields -2- and -4-.


Display Group 046:






If specification "Cat. B1 OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 12: Diagnosis of Activating Evaporative Emission (EVAP) Canister Purge Regulator -N80-

Test conditions:
- Engine run at idle

Display on VAS 5051:







1 - Enter display group
- Enter "070" for "display group number 070" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:







- Activate basic setting by pressing -A- button.
- Check indication in display field -4-.


Display Group 070:






If specification "EVAP OK" is obtained:
- Press <- button.
- Perform next operation.

Operation 13: Diagnostic of tank seal and Secondary Air Injection (AIR) system

Observe:
- Engine running at idle:

Display on VAS 5051:







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

Display on VAS 5051:







- Activate basic setting by pressing button -A-.

NOTE:
- During diagnostic of the Secondary Air Injection (AIR) system, the Secondary Air Injection (AIR) pump will run for several seconds.
- In case diagnostic leak test is not started, open fuel filler cap briefly (to release pressure).

- Check indication in display fields -2- and -4-.


Display Group 191:






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

Operation 14: Read readiness code
- Read readiness code Readiness Code Reading
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