Readiness Code, Generating - I
Readiness Code, Generating
Requirements:
- Vehicle stationary.
- Electrical devices switched off (radiator fan must NOT run during test).
- Air conditioning switched off.
- Vehicles with automatic transmission: Selector lever in P or N position.
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/VAG 1551 Scan Tool (ST)
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?
Note: 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 field -2- and confirm entry by pressing -Q- button.
Display on VAS 5051:
- Activate basic setting by pressing -A- button.
- Check indication in display fields -3- and -4-.
Display Group 060:
If specification "B1-P1 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 field -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 kick-down 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 field -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 engine speed (RPM) the specified values are achieved quicker.
- The "Oxygen sensor status" indicates the condition of oxygen sensor control and the oxygen sensor (O2S).
Display Group 030:
- Only continue with test if displays have reached "111" in display field 1 and "110" in display field 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 field -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.