Output Diagnostic Test Mode (Function 03)

Output Diagnostic Test Mode (Function 03)

NOTE:
- The Output Diagnostic Test Mode can only be performed with the ignition switched on and the engine not running.
- The electric fuel pump runs continuously throughout the Output Diagnostic Test Mode.
- During the Output Diagnostic Test Mode, each control element (except the injectors) is activated for about 1 minute unless the test program is deliberately advanced to the next control element by pressing the -> button.
- The control elements can be tested either by listening or by touching.
- The Output Diagnostic Test Mode is terminated if the engine is started or if an engine speed pulse is detected.
- If the Output Diagnostic Test Mode is to be repeated, the engine must be started and the ignition switched off and then on again.

The Output Diagnostic Test Mode activates the following components in the stated sequence:

Activation sequence
1 Evaporative emission (EVAP) canister purge -N80-
2 Secondary air injection (AIR) solenoid valve -N112-
3 Secondary Air Injection (AIR) Pump Relay -J299-
4 Wastegate bypass regulator valve -N75-
5 Camshaft timing control
6 Leak detection pump tank ventilation system
7 Recirculating valve for turbocharger -N249-
8 Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-
9 Cylinder 1 Fuel Injector -N30-
10 Cylinder 3 Fuel Injector -N32-
11 Cylinder 4 Fuel Injector -N33-
12 Cylinder 2 Fuel Injector -N31-

Test requirement:
- Fuses for engine electronics OK.

Test sequence
- Connect the vehicle diagnostic, testing and information system VAS 5051, Vehicle Diagnostic, Testing and Information System VAS 5051, Connecting and Selecting Functions , and select the vehicle system "01 - Engine electronics" from the menu. When doing this the engine should be idling.







Display on VAS 5051:
- Select diagnosis function "03 - Output Diagnostic Test Mode" from the menu -1 -

NOTE: The fuel pump relay should pick up and the fuel pump should run. There will be a clearly audible fuel flow at the fuel pressure regulator. If the fuel pump does not run, test activation.


Activating solenoid valve for activated charcoal filter (EVAP canister purge regulator valve)







Display on VAS5051:
A - 1st control element in test
1 - Evaporative Emission (EVAP) Canister Purge Regulator Valve-N80-
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):
- Test Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Testing and Inspection

Activating secondary air inlet valve
- Press the -> button.







Display on VAS5051:
A - 2nd control element in test
2 - Secondary air injection (AIR) solenoid valve -N112-
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):
- Test Evaporative emission (EVAP) canister purge regulator valve -N112-

Activating relay for secondary air pump
- Press the -> button.







Display on VAS5051:
A - 3rd control element in test
3 - Secondary air pump relay -J299-
- The secondary air pump relay -J299 (in 3-point relay carrier in electronics box on left side of plenum chamber, plug-in position 2) switches the secondary air pump motor-V101 on and off at intervals of approx. 1 minute, unless the test program is deliberately advanced to the next control element by pressing the -> button.

If Secondary air injection (AIR) pump motor -V101- does not run at intervals:
- Test secondary air pump relay -J299-:

Activating charge pressure control valve
- Press the -> button.







Display on VAS5051:
A - 4th control element in test
4 - Charge pressure control valve -N75
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):

Activating camshaft adjustment valve
- Press the -> button.







Display on VAS5051:
A - 5th control element in test
5 - Camshaft timing control
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):
- Test camshaft adjustment valve

Activate leak detection pump tank ventilation system
- Press the -> button.







Display on VAS5051:
A - 6. actuator in test
6 - Leak detection pump tank ventilation system
- Change-over valve in leak detection pump is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button..

NOTE: The clicking can be heard by listening in area of the front right wheelhousing.

If the valve is not actuated (does not click):
- Press the -> button.







Display on VAS5051:
A - 7th control element in test
7 - Recirculating valve for turbocharger -N249-
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):

Activating solenoid valve 2 for EVAP canister
- Press the -> button.







Display on VAS5051:
A - 8th control element in test
8 - Evaporative emission (EVAP) canister purge solenoid valve -N115-
- This valve is activated for about 1 minute (clicks) unless the test program is deliberately advanced to the next control element by pressing the -> button.

If the valve is not actuated (does not click):
- Check Evaporative emission (EVAP) canister purge solenoid valve -N115-

Activating injectors

NOTE: The injectors are actuated according to the firing order: Cyl. 1, Cyl. 3, Cyl. 4, Cyl. 2.
- Press the -> button.







Display on VAS5051:

A - 9th control element in test
9 - Injector-Cyl. 1 -N30-
- Press the -> button.
- The injector should click five times after the -> button is pressed.

If the injector does not click:
- Test injectors. Fuel Injectors, Testing







Display on VAS5051:

A - 10th control element in test
10 - Injector - Cyl. 3 -N32-
- Press the -> button.
- The injector should click five times after the -> button is pressed.

If the injector does not click:
- Test injectors. Fuel Injectors, Testing
- Press the -> button.







Display on VAS5051:
A - 11th control element in test
11 - Injector-Cyl. 4-N33-
- The injector should click five times after the -> button is pressed.

If the injector does not click:
- Test injectors. Fuel Injectors, Testing
- Press the -> button.







Display on VAS5051:
A - 12th control element in test
12 - Injector-Cyl. 2-N31-
- The injector should click five times after the -> button is pressed.

If the injector does not click:
- Test injectors. Fuel Injectors, Testing
- Press -> button after activating the last injector (cylinder 2).







Display on VAS5051:
A - Output Diagnostic Test Mode is completed
- Press the -> button to exit from function "03 - Output Diagnostic Test Mode".

NOTE: If the Output Diagnostic Test Mode has to be repeated, the engine must be started again first and the ignition switched off and then on again.