Oil level sensor Line interruption in the sensor circuit
|  | Description
|  | Effects on the driving operation
|  | Possible causes
|  | Connection of the oil level sensor
|  | Connector pin assignment of the transmission control unit
|  | Connector pin assignment of the transmission connector
|  | Internal cable harness
|  | Installation point of the oil level sensor
|  | Location
|  | Instruction
|  | Setting conditions for the event
|  | Test conditions for the event
|  | Oil level sensor connector OIL-LVL
|  | Troubleshooting
|  | Final function check
|  | See also:
Description Line interruption in the sensor circuit Effects on the driving operation Oil level not available. Possible causes Connector disconnected, too high contact resistance between plug-in contacts or break in the sensor cabling. Connection of the oil level sensor Connector pin assignment of the transmission control unit
Pin | Stecker A | Stecker B | Stecker C | Stecker D
1 | SHIELD | EK | FLEXI-1 | -BATT
2 | TIM+ | DK | --- | IGN
3 | TIM- | SK | FLEXI-3 | FLEXI-11
4 | N1+ | RBK | FLEXI-4 | K-LINE
5 | N1- | TB | FLEXI-5 | CAN1-H
6 | N2+ | --- | FLEXI-6 | CAN1-H
7 | N2- | RBG | FLEXI-7 | CAN-SHLD
8 | N3+ | PB | FLEXI-8 | CAN1-L
9 | N3- | WR | FLEXI-9 | CAN1-L
10 | --- | WP | FLEXI-10 | CAN2-H
11 | --- | --- | FLEXO-2H | CAN2-H
12 | EKM | FLEXI-12 | FLEXO-4H | CAN2-L
13 | DKM | S-GND | FLEXO-3H | CAN2-L
14 | SKM | OIL-LVL | FLEXO-5L | CAN1-R
15 | PBM | T-SUMP | --- | ---
16 | TBM | --- | --- | FLEXO-1L
17 | RBKM | T-CONV | --- | CAN2-R
18 | MVM-GND | MV-GND | --- | +BATT
Connector pin assignment of the transmission connector
Pin | Name | Pin | Name | Pin | Name
1 | S-GND | 14 | RBK | 27 | EKM
2 | MV-GND | 15 | RBG | 28 | PBM
3 | MV-GND | 16 | TB | 29 | RBKM
4 | --- | 17 | WR | 30 | TBM
5 | T-CONV | 18 | --- | 31 | MVM-GND
6 | T-SUMP | 19 | --- | 32 | N1+
7 | OIL-LVL | 20 | --- | 33 | N1-
8 | P-DIFF | 21 | TIM- | 34 | N2+
9 | SK | 22 | TIM+ | 35 | N2-
10 | DK | 23 | --- | 36 | N3+
11 | EK | 24 | SHIELD | 37 | N3-
12 | PB | 25 | SKM |  |
13 | WP | 26 | DKM |  |
Internal cable harness Installation point of the oil level sensor Location Oil level sensor (terminals of the sensor or sensor circuit) Instruction Check plug-in contacts, cabling and sensor. Setting conditions for the event No description available. Test conditions for the event No description available. Oil level sensor connector OIL-LVL
Pin assignment for combined oil level / temperature sensor 1 top = S-GND = oil level sensor ground 2 top = OIL-LVL = oil level signal 1 bottom = S-GND = temperature sensor ground 2 bottom = T-SUMP = temperature signal |  |
Troubleshooting Check the plug connections and cables. (Instruction: see "Related Topics") Disconnect the plug connection at the combined oil level / temperature sensor. Check that the sensor is internally intact: When measuring the resistance, please observe the dependence on the temperature. Simultaneously to the resistance measurement, the sensor temperature has to be measured, too, or estimated with utmost accuracy. Read the nominal resistance from the temperature curve below and compare it to the measured or estimated temperature. Measure the resistance between pin 1 and and pin 2 (top). The sensor works correctly if the measured resistance deviates from the nominal resistance by no more than ± 5 ohms. Replace the control unit. If none of the above measures brings any improvement, please contact the Voith Turbo headquarters.
Pin assignment for combined oil level / temperature sensor 1 top = S-GND = oil level sensor ground 2 top = OIL-LVL = oil level signal 1 bottom = S-GND = temperature sensor ground 2 bottom = T-SUMP = temperature signal |  |
Characteristic Final function check If the defective component cannot be clearly identified, you should try to reproduce the fault: Reinstall the component in the vehicle. Test the function. After the fault has been eliminated, the following steps have to be carried out: Conduct a test drive with function check. Read out the fault memory. Check the transmission for leaks. Perform a final visual inspection. These steps are necessary to ensure the entire vehicle functions. See also:
|  | Troubleshooting for cable break
|  | Aftersales service index
© by Voith Turbo GmbH & Co. KG, S. Brunnengräber send remarks to stefan.brunnengraeber@voith.com (documentation department)