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Home >> Audi >> 1998 >> A8 Quattro >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On Board Diagnostic (OBD) - 5 SPD. Automatic Transmission (01L, AWD) >> On Board Diagnostic (OBD), checking >> Output Diagnostic Test Mode (DTM) (function 03)

Output Diagnostic Test Mode (DTM) (function 03)

NOTE:
  • The output DTM can only be carried out when the selector lever is in "P" position, the engine is running, and the vehicle is standing still.
  • The output DTM is discontinued when the engine is started.
  • The function of the solenoid valves 1 -N88-, 2 -N89- and 3 -N90- and the shift lock solenoid -N110- are checked audibly during the output DTM. During the audible check the surrounding noises should be limited, since the clicking noises are very quiet.
  • Pressure control valves 1 -N215-, 2 -N216-, 3 -N217-, 4 -N218- and pressure regulating valve 5 -N233- are triggered by the output DTM. A direct functional check of these components is not possible. However, electrical malfunctions, which occur during this triggering, are eventually stored in the DTC memory through the OBD program.
  • During the output DTM the individual controls are triggered until the --> button is pressed.
  • Only a complete final control diagnosis is possible after the ignition is switched on. To repeat, the ignition must be switched off and switched on again.
DTM TRIGGERING SEQUENCE OUTPUT

Output DTM triggering sequence
1. Solenoid valve 1 -N88-
2. Solenoid valve 2 -N89-
3. Solenoid valve 3 -N90-
4. Shift lock solenoid -N110-
5. Pressure control valve 1 -N215-
6. Pressure control valve 2 -N216-
7. Pressure control valve 3 -N217-
8. Pressure control valve 4 -N218-
9. Pressure regulating valve 5 -N233-
10. Relay for solenoid valves

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Select Function XX
G02726770Courtesy of AUDI OF AMERICA, INC.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Output Diagnostic Test Mode
G02726771Courtesy of AUDI OF AMERICA, INC.

Indicated on display

Fig 3: VAG 1551 Scan Tool Display - Solenoid Valve 1, N88
G02726772Courtesy of AUDI OF AMERICA, INC.

If the solenoid valve is triggered (clicks):

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

NOTE: A malfunction is stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display

Fig 4: VAG 1551 Scan Tool Display - Solenoid Valve 2, N89
G02726773Courtesy of AUDI OF AMERICA, INC.

If the solenoid valve is triggered (clicks):

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

NOTE: A malfunction is stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display

Fig 5: VAG 1551 Scan Tool Display - Solenoid Valve 3, N90
G02726774Courtesy of AUDI OF AMERICA, INC.

If the solenoid valve is triggered (clicks):

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

NOTE: A malfunction is stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display

Fig 6: VAG 1551 Scan Tool Display - Shift Lock Solenoid, N110
G02726775Courtesy of AUDI OF AMERICA, INC.

If the solenoid is triggered (clicks):

If the solenoid is not triggered (does not click):

NOTE: A malfunction is stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The valve is triggered.

Fig 7: VAG 1551 Scan Tool Display - Pressure Control Valve 1, N215
G02726776Courtesy of AUDI OF AMERICA, INC.
NOTE: Possible electrical malfunctions are stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The valve is triggered.

Fig 8: VAG 1551 Scan Tool Display - Pressure Control Valve 2, N216
G02726777Courtesy of AUDI OF AMERICA, INC.
NOTE: Possible electrical malfunctions are stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The valve is triggered.

Fig 9: VAG 1551 Scan Tool Display - Pressure Control Valve 3, N217
G02726778Courtesy of AUDI OF AMERICA, INC.
NOTE: Possible electrical malfunctions are stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The valve is triggered.

Fig 10: VAG 1551 Scan Tool Display - Pressure Control Valve 4, N218
G02726779Courtesy of AUDI OF AMERICA, INC.
NOTE: Possible electrical malfunctions are stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The valve is triggered.

Fig 11: VAG 1551 Scan Tool Display - Pressure Regulating Valve 5, N233
G02726780Courtesy of AUDI OF AMERICA, INC.
NOTE: Possible electrical malfunctions are stored in DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE  .

Indicated on display. The activated solenoid valves are triggered (click) in "P" position.

Fig 12: VAG 1551 Scan Tool Display - Relay For Solenoid Valves
G02726781Courtesy of AUDI OF AMERICA, INC.
NOTE: This need not be taken into consideration.

Indicated on display

Fig 13: VAG 1551 Scan Tool Display - Function Is Unknown Or Cannot Be Carried Out At The Moment
G02726782Courtesy of AUDI OF AMERICA, INC.

Indicated on display

Fig 14: VAG 1551 Scan Tool Display - Select Funtion XX
G02726783Courtesy of AUDI OF AMERICA, INC.

To repeat the output DTM, the ignition must be switched off and then on again. Then, the "Output Diagnostic Test Mode" function 03 must be selected again.