Readiness Code, Creating
Readiness code, creating
- Study following chart. Pay special attention to function bits 5, 6, 7 and 8.
Note for vehicles >m.y. 96 only: If using the procedure to verify a repair, go to the appropriate work step and verify that repair, but if creating a readiness code, follow the work steps in sequence and do not switch the ignition off until the sequence has been completed.
NOTE: - If a particular bit that you are watching in the Readiness code is obtained sooner than the time specified in the procedure, you can immediately proceed to the next work step.
- An "x" in the diagnostic status means the display can be either a "0" or a "1"
- There must not be a malfunction stored in DTC memory and there must not be any malfunctions detected during diagnostic test!
Special Tools, Testers And Auxiliary Items
- VAG 1551/1552 scan tool with VAG 1551/3 adapter cable.
Test Sequence
WARNING: When driving or riding in an airbag-equipped vehicle:
- Never hold test equipment in your hands or lap while the vehicle is in motion. Objects between you and the airbag can increase the risk of injury in an accident.
- Secure tools or test equipment on passenger side floor where it can be safely read by the second technician.
- Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01.
- When doing this, the ignition must be switched on.
Work Step: 1
Indicated on display
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -2- to select "Check DTC Memory" function 02.
- Press -Q- button to confirm input.
The number of malfunctions stored or "No DTC recognized" will be shown on the display.
X DTC Recognized -->
- Locate and eliminate malfunctions printed out as per DTC table.
- Press -> button.
Work Step: 2
Display will appear as shown
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -5- to select "Erase DTC memory" function 05.
- Press -Q- button to enter input.
Display will appear as shown
- Press -> button.
Rapid data transfer --->
DTC Memory is erased
Work Step: 3
Diagnostic Test: Leak Check For EVAP System.
NOTE: Not all vehicles have this system installed. If this system is not found on the vehicle you are working with; skip this work step.
- Start engine and allow to idle.
Display will appear as shown
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -4- to select "Basic setting" function 04.
- Press -Q- button to enter input.
Display will appear as shown
Basic setting HELP
Input display group number XXX
- Press -1-, -5- and -3- buttons to input display group 153.
- Press -Q- button to enter input.
Display will appear as shown (1-4 = display fields)
System in Basic Setting 153-->
1 2 3 4
- Run engine at idle and check specifications after 60 seconds.
Display Group 153 Function 04
- Press -> button.
Work Step: 4
Diagnostic test: Engine warm-up
- Press -0- and -8- buttons to select "Read measuring value block." function 08.
- Press -Q- button to enter input.
Display will appear as shown
Read Measuring Value Block HELP
Input display group number XXX
- Press buttons -1-, -0- and -3- to input display group 103.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields).
Read Measuring Value Block 103-->
1 2 3 4
- Increase engine speed to 3000-3500 RPM and check specifications after 60 seconds.
Display Group: 103 Function: 08
Relevance of 8 Digit Number, Display Field 4
- Press -> button.
Work Step: 5
Diagnostic test: Secondary Air Injection system
- Vehicle stationary
NOTE: Not All Vehicles Have This System Installed! If This System Is Not Found On The Vehicle You Are Working With; Skip This Work Step.
Display will appear as shown
Rapid data transfer HELP
Select function XX
- Press -0- and -4- buttons to select "Basic setting" function 04.
- Press -Q- button to enter input.
Display will appear as shown
Basic setting HELP
Input display group number XXX
- Press buttons -1-, -6- and -0- to input display group 160.
- Press -Q- button to enter input.
Display will appear as shown (1-4 = display fields).
System in Basic Setting 160-->
1 2 3 4
- Allow engine to idle and check specifications after 20 seconds.
Display group:160 Function: 04
- Press -C- button.
Work Step: 6
Diagnostic test: Engine warm-up continued (calculated temperature of three way catalytic converter).
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press buttons -1-, -0- and -3- to input display group 103.
- Press -Q- button to enter input.
Display will appear as shown (1-4 = display fields).
System in Basic Setting 103-->
1 2 3 4
- Increase engine speed to 2200-3300 RPM and check specifications after 120 seconds.
Display Group: 103 Function:08
Relevance of 8 Digit number Block, Display field 4
- Press -C- button.
Work Step: 7
Diagnostic test: Oxygen Sensor aging (regulating frequency extended).
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -3- and -1- buttons to input display group 131.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 131-->
1 2 3 4
- Run engine at idle and check specifications after 5 seconds.
Display Group: 131 Function: 04
Relevance of 8 digit number block Display field 4
- Press -C- button.
Work Step: 8
Diagnostic test: Fuel adaptation under partial throttle.
Display will appear as shown
Basic setting HELP
Input display group number XXX
- Press -1-, -2- and -5- buttons to input display group 125.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields).
System in Basic Setting 125-->
1 2 3 4
- Test drive per the following conditions.
Road Test Procedure
NOTE: Avoid deceleration fuel cut-off during this diagnostic test. It causes the three way catalytic converter to store oxygen, diagnostic test will then be blocked for at least 10 seconds.
- Transmission Range 2 or 2nd gear must be selected
- Engine speed must be kept between 2500 and 3500 RPM
- Continue test drive until specifications are attained
- Check Specifications During Test Drive (second Technician Necessary).
- See Airbag Warning At The Begining Of Test Procedure.
Display Group: 125 Function: 04
Relevance of 8 digit number block Display Field 4
- Continue test drive until all specifications are obtained.
Work Step: 9
Diagnostic test: Fuel adaptation during closed throttle position Test conditions.
- Bring vehicle to stationary position and let idle.
- All electrical consumers switched OFF.
Display will appear as shown (1-4 = display fields).
System in Basic Setting 125-->
1 2 3 4
- Check specifications after 30 seconds.
Display Group: 125 Function; 04
Relevance of 8 digit number Display Field 4
- Press -C- button.
Work Step: 10
Diagnostic test: Oxygen Sensor aging (regulating frequency extended)
- Vehicle stationary.
- All electrical consumers switched OFF (coolant fan must not run).
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press buttons -1-, -3- and -0- to input display group 130.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 130-->
1 2 3 4
- Raise engine RPM between 2200 and 2800 then check specifications.
Display Group: 130 Function: 04
Relevance of 8 digit number Display Field 4
- Press -C- button.
Work Step: 11
Diagnostic test: Three Way Catalytic Converter.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -3- and -6- buttons to input display group 136.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 136-->
1 2 3 4
- Increase engine speed between 2700 and 3300 RPM, check specifications after 120 seconds.
Display Group: 136 Function: 04
Revelance of 8 digit number Display Field 4
- Press -C- button.
Work Step: 12
Diagnostic test: Fuel tank vent system (EVAP canister purge regulator valve).
- Vehicle stationary
- All electrical consumers switched OFF (coolant fan not running during check).
- A/C switched OFF
NOTE: Engine must not be under load during the diagnostic test or sequence will be interrupted and not started again until engine is revved up.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -5- and -0- buttons to input display group 150.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 150-->
1 2 3 4
- Run engine for 30 seconds at idle and check specifications.
NOTE: For work step 12, look for either display field 2 or display field 3 specification fulfillment, but not both. Fulfillment of either display is acceptable.
Display Group: 150 Function: 04
Relevance of 8 digit number block Display field 4
- Press -> button.
Work Step: 13
- Read readiness code.
If readiness code NOT OK:
- Perform optional work steps 14 through 20.
Work Step: 14
Diagnostic test: Vehicle Speed Sensor.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -8- and -0- buttons to select display group number 180. Press -Q- button to enter input.
Display will appear as shown: (1 to 4 = display zones)
System in basic Setting 180-->
1 2 3 4
- Perform test drive and fulfill the following conditions:
- Transmission Range 2 or 2nd gear selected.
- Engine speed between 3200 and 4000 RPM for 10 seconds.
- Then release accelerator pedal for 3 seconds.
- After 3 seconds, vehicle speed must be 13mph min. and have been in overrun for 2 seconds minimum.
- Check specifications during test drive (second technician necessary).
Display Group: 180 Function:04
Relevance of 8 digit number block Display field 4
- Press -C- button.
Work step: 15
Diagnostic test: Knock Sensor
Test Conditions
- Vehicle stationary
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -4- and -5- buttons to input display group 145.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 145-->
1 2 3 4
- Increase engine speed to 2500 RPM minimum and check specifications after 15 seconds.
Display Group: 145 Function:04
Relevance of 8 digit number Display Field 4
- Press -> button.
WOrk Step: 16
Diagnostic test: Heated Oxygen Sensor (HO2S) before three way catalytic converter.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -1 and -5- buttons to input display group 115.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields).
System in Basic Setting 115-->
1 2 3 4
- Increase engine speed between 2200 and 2800 RPM and check specifications.
Display Group 115 Function: 04
Relevance of 8 digit number block Display Field 4
- Press -3- button (VAG 1551) or Z (VAG 1552).
Work Step: 17
Diagnostic Test: Heated Oxygen Sensor after three way catalytic converter.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press-1-, -1-and -6- buttons to input display group 116,
- Press -Q- button to enter input.
Display will appear as shown (1-4 = display fields)
System in Basic Setting 116-->
1 2 3 4
- Increase engine speed between 2200 and 2800 RPM and check specifications after 15 seconds.
Display Group 116 Function: 04
Relevance of 8 digit number block Display Field 4
- Press -C- button.
Work Step: 18
Diagnostic test: Oxygen Sensor heating (before three way catalytic converter).
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press buttons -1-, -2- and -0- to input display group 120.
- Press -Q- button to enter input.
Display will appear as shown (1-4 = display fields).
System in Basic Setting 120-->
1 2 3 4
- Increase engine speed between 2200 and 2800 RPM and check specifications.
Display Group 120 Function: 04
Relevance of 8 digit number block Display Field 4
- Press -3-button (VAG 1551 scan tool) or 1 button (VAG 1552).
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 121-->
1 2 3 4
- Increase engine speed between 2200 and 2800 RPM and check specifications.
Display Group 121 Function: 04
Relevance 0f 8 digit number block Display Field 4
- Press -C- button.
Work Step: 19
Diagnostic: Throttle valve control module
NOTE: There are no specifications for this diagnostic test. The values in display fields are typical. Obtaining other values does not indicate a system malfunction. The diagnostic functions run in the background during the check.
Display will appear as shown
Basic Setting HELP
Input display group number XXX
- Press -1-, -4- and -0- buttons to input display group 140.
- Press -Q- button to enter input.
Display will appear as shown (1 to 4 = display fields)
System in Basic Setting 140-->
1 2 3 4
- Run engine at idle.
Display Group: 140 Function: 04
- Press Z button
Display will appear as shown (1-4 = display fields)
System in Basic Setting 141-->
1 2 3 4
- Run engine at idle.
Display Group: 141 Function: 04
- Press -3- button (VAG 1551 scan tool) or Z button (VAG 15521.
Display will advances as shown (1 to 4 = display fields)
System in Basic Setting 142-->
1 2 3 4
- Run engine at idle.
Display Group: 142 Function: 04
- Press -> button
Work Step: 20
- Read readiness code.
- Press -0- and -6- buttons to select "End Output" function 06.
- Press -Q- button to enter in put.