W/Hydraulic Regulation E18/2 Output Diagnostic Test Mode (DTM)
Transmission With Hydraulic Regulation -E18/2-, Output Diagnostic Test Mode (DTM)
Output Diagnostic Test Mode, Performing
A differentiation is made between two types of transmissions:
- Transmission with hydraulic regulation -E17-, on which the transmission input speed sensor (inductive sensor) is secured to the underside of the valve body.
- Transmission with hydraulic regulation -E18/2-, on which the transmission input speed sensor (camshaft position sensor) is secured behind valve body at transmission housing.
Transmission With Hydraulic Regulation -E18/2-, Output Diagnostic Test Mode (DTM)
- The Output Diagnostic Test Mode is a part of the electrical test. The Output Diagnostic Test Mode checks the solenoid valves, the shiftlock solenoid, the kick-down switch and the relay for the solenoid valves.
- The Output Diagnostic Test Mode can only be performed when the selector lever is in position "P", the engine is not running and the vehicle is stationary.
- The Output Diagnostic Test Mode will be terminated if the engine is started.
- The function of the solenoid valves 1 -N88-, 2 -N89-, 3 -N90- and the solenoids for the selector lever lock are checked acoustically during the Output Diagnostic Test Mode. Avoid noise in the surrounding area during the acoustic check, because the switching noise (clicking) of the final controls is very quiet.
- The solenoid valves 4 -N91-, 5 -N92-, 6 -N93- and 7 -N94- are activated during the Output Diagnostic Test Mode. A direct functional check of these valves is not possible. But possible electrical faults which occur during the activation, will be recognized by the On Board Diagnostic (OBD) and stored in the DTC memory.
- When performing the Output Diagnostic Test Mode the individual final controls will be activated until the -> button is pressed.
- Only one complete Output Diagnostic Test Mode is possible after switching the ignition on. To repeat the Output Diagnostic Test Mode the ignition must be switched off and on again.
Activation 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- for auto.
transmission -N215-
6. Pressure control valve -2- for auto.
transmission -N216.
7. Pressure control valve -3- for auto.
transmission -N217.
8. Pressure control valve -4- for auto.
transmission -N218-
9. Voltage supply for solenoid valves
Test sequence
- Connect scan tool VAG 1551 and enter address word "02 Transmission electronics" and advance until "Select function XX" appears in the display. Scan Tool VAG 1551, Connecting
Indicated on display:
Rapid data transfer HELP
Select function XX
- Press keys 0 and 3. (03 selects the function "Output Diagnostic Test Mode").
Indicated on display
Rapid data transfer Q
03 - Output Diagnostic Test Mode
- Confirm entry with key Q.
Indicated on display:
Output Diagnostic Test Mode (DTM)
Shift valve 1 See Solenoid Valve 1 -N88
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve does not click, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Shift valve 2 See Solenoid Valve 2 -N89
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve does not click, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Shift valve 3 See Solenoid Valve 3 -N90
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve does not click, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Shift lock See Solenoid -N110
- Solenoid is activated (clicks), to move to the next final control press -> key.
- If solenoid does not click, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Pressure control valve -1- for auto. transmission -N215
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve is not activated, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Pressure control valve -2- for auto. transmission -N216
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve is not activated, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Pressure control valve -3- for auto. transmission -N217
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve is not activated, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Pressure control valve -4- for auto. transmission -N218
- Valve is activated (clicks), to move to the next final control press -> key.
- If the valve is not activated, perform electrical check. Pinout Values and Diagnostic Parameters
Indicated on display:
Output Diagnostic Test Mode (DTM)
Pressure regulating valve -5- for automatic transmission -N233
- "Pressure regulating valve -5- for automatic transmission -N233-" could now be displayed erroneously due to a software error, even though it does not exist. Press -> button to switch over to the next actuator.
Indicated on display:
Output Diagnostic Test Mode (DTM)
Voltage supply for solenoid valves
- Disregard display.
- Press -> key to advance to next final control.
Indicated on display
Function is unknown or ->
cannot be carried out at the moment
- Pressing the -> key will terminate the Output Diagnostic Test Mode.
Indicated on display:
Rapid data transfer HELP
Select function XX
- To repeat the Output Diagnostic Test Mode the ignition must be switched off and then on again, then again select the function 03 - Output Diagnostic Test Mode.