Readiness Code Generating (VW Drive Cycle)
READINESS CODE, GENERATING
Requirements
^ Fuses in E-box (plenum chamber, right) must be OK.
^ Fuses in fuse box (instrument panel, left) must be OK.
^ Battery voltage (both batteries) must be at least 11.5 Volts.
^ All electrical consumers such as, lights and rear window defroster must be switched off.
^ For vehicles with automatic transmission, selector lever must be in -P-.
^ If vehicle is equipped with an A/C system, it must be switched off.
^ Ground (GND) connections between engine, transmission, and chassis must be OK.
^ There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory.
^ Intake air temperature 5 to 35° C, Diagnostic mode 1: Check measured values; PID 15: Intake Air Temperature (IAT).
Work procedure
- Connect diagnostic tester.
Perform a road test.
The following operating condition must be met during this road test:
- Coolant temperature must reach at least 80° C, Diagnostic mode 1: Check measured values; PID 05, Coolant temperature.
Observe the safety precautions that apply to road tests.
Let vehicle cool off with the ignition switched off until the following condition is met:
- Coolant temperature approx. intake air temperature (5 to 35° C), Diagnostic mode 1: Check measured values; PID 05, Coolant temperature.
- Perform a road test again.
The following operating conditions must be met during this road test:
- Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).
- Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
Note:
- Vehicle speed, Diagnostic mode 1: Check measured values; PID 13, Vehicle speed.
- Engine speed, Diagnostic mode 1; Check measured values; PID 12, engine rotations per minute (RPM).
- After 10 minutes, downshift until an engine speed of 2800 to 3500 RPM has been reached.
- Drive in deceleration mode at a speed up to approx. 1800 RPM.
- Park vehicle and let engine run at idle for 3 minutes.
^ Accelerator pedal must not be operated during this time.
- Perform a road test again.
The following operating conditions must be met during this road test:
- Accelerate vehicle uniformly, not at Wide Open Throttle (WOT).
- Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
- Park vehicle and let engine run at idle for 3 minutes.
^ Accelerator pedal must not be operated during this time.
- Read readiness code.
If a 1 is displayed instead of a 0 in the 8-digit number block:
- Perform a road test again.
The following operating conditions must be met during this road test:
- Drive for 10 minutes in the highest gear or in the highest driving mode on a level driving surface at a constant speed in the range of 65 to 80 km/h at an engine speed of 2000 to 2500 RPM.
- Park vehicle and let run at idle for 3 minutes.
^ Accelerator pedal must not be operated during this time.
- Read readiness code.
If in 8-digit number block:
^ Display position 5: Secondary Air Injection (AIR) system
and/or
^ Display position 6: EVAP canister system
a 1 instead of 0 is displayed:
- Repeat complete work procedure.