Readiness Code Generating (VW Drive Cycle)

Readiness Code, Generating

Requirements







- The respective fuses of Diesel-Direct fuel injection system must be OK.
- Battery voltage must be at least 11.5 volts.
- All electrical consumers such as, lights and rear window defroster must be switched off.
- If vehicle is equipped with an A/C system, it must be switched off.
- Ground (GND) connections between engine and chassis must be OK.
- Coolant temperature must not be above the maximum of 25 degrees C, Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values
- There must not be any DTCs stored in DTC memory, Diagnostic mode 3: Check DTC memory Diagnostic Mode 3: Check DTC Memory.

Work procedure
- Connect diagnostic tester. Diagnostic Tester, Connecting
- Switch ignition on.
- Wait 5 seconds.
- Let engine run at idle.
- Wait 45 seconds.
- Perform a road test.

Observe the safety precautions that apply to road tests.

The following operating conditions must be met during this road test:
- Bring coolant temperature to at least 85 degrees C via road test, Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values
- Drive for 20 seconds in driving mode "D" on a level driving surface at a constant vehicle speed with an engine speed of 1700 to 1900 RPM.
- Accelerate vehicle to 100 km/h.
- Drive for 2 minutes in driving mode "D" on a level driving surface at a constant vehicle speed of 100 km/h (no deceleration).
- Then from 100 km/h, decelerate (do not brake) in driving mode "D" to 900 RPM.

NOTE:
- Vehicle speed, Diagnostic mode 1: Check measured values; PID 13, Vehicle speed. Diagnostic Mode 1: Check Measuring Values
- Engine speed, Diagnostic mode 1: Check measured values; PID 12, engine rotations per minute (RPM). Diagnostic Mode 1: Check Measuring Values

- Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
- Switch ignition off.
- Let engine cool off:
- Coolant temperature must not be above the maximum of 25 degrees C, Diagnostic mode 1: Check measuring values; PID 5, coolant temperature. Diagnostic Mode 1: Check Measuring Values
- Switch ignition on again.
- Wait 5 seconds.
- Let engine run at idle.
- Wait 45 seconds.
- Perform a road test again.

Observe the safety precautions that apply to road tests.

The following operating conditions must be met during this road test:
- Bring coolant temperature to at least 85 degrees C via road test, Diagnostic mode 1: Check measured values; PID 5, Coolant temperature. Diagnostic Mode 1: Check Measuring Values
- Drive for 20 seconds in driving mode "D" on a level driving surface at a constant vehicle speed with an engine speed of 1700 to 1900 RPM.
- Accelerate vehicle to 100 km/h.
- Drive for 2 minutes in driving mode "D" on a level driving surface at a constant vehicle speed of 100 km/h (no deceleration).
- Then from 100 km/h, decelerate (do not brake) in driving mode "D" to 900 RPM.

NOTE:
- Vehicle speed, Diagnostic mode 1: Check measured values; PID 13, Vehicle speed. Diagnostic Mode 1: Check Measuring Values
- Engine speed, Diagnostic mode 1: Check measured values; PID 12, engine rotations per minute (RPM). Diagnostic Mode 1: Check Measuring Values

- Park vehicle and let engine run at idle for 3 minutes.
- Accelerator pedal must not be operated during this time.
- Read readiness code. Readiness Code Reading

If a 1 is displayed instead of a 0 in the 8-digit number block:
- Repeat complete work procedure.