Tiptronic Switch, Checking
- The Selector Lever Sensor System Control Module J587 and the Tiptronic Switch F189 are combined into one component.
Special tools, testers and auxiliary items required
- Multimeter
- Wiring diagram
Requirements
- Fuses SB15 and SA20 OK.
- Selector Lever Sensor System Control Module J587 must be OK.
- The Control Module with indicator unit in the Instrument Cluster Control Module J285 must be OK.
- The selector lever cable adjustment OK.
- The battery voltage must be at least 12.5 V.
- All electrical consumers must be switched off.
- The parking brake must be engaged.
- The selector lever must be in the "P" position.
- The Ground (GND) connections to transmission must be OK.
Procedure
- Switch the ignition on.
- Depress the brake pedal and maintain depressed.
- Shift the selector lever into all positions.
The selector lever position must correspond with the Tiptronic Switch F189 indicator display unit.
- Switch the ignition off.
If the selector lever position does not correspond with the Tiptronic Switch F189 indicator display unit:
- Disconnect the Tiptronic Switch F189 electrical harness connector - 2 -.
- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
- Repair any damage found to the electrical harness connector.
If the electrical harness connector is not OK:
- Repair the malfunction.
If the electrical harness connector is OK:
Checking voltage
- Switch the ignition on.
- Using a multimeter , check the Tiptronic Switch F189 electrical harness connector terminal T10p/7 to Ground (GND) for voltage.
Specified value, Battery voltage.
- Switch the ignition off.
If the specified value was not obtained:
- If necessary, repair the faulty wiring connection.
If the specified value was obtained:
Checking Ground (GND)
- Using a multimeter , check the Tiptronic Switch F189 electrical harness connector terminal 10p/6 to Ground (GND) connection for resistance.
Specified value: 1.5 Ω Max.
If the specification was not obtained:
- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
- If necessary, repair the faulty wiring connection.
If no malfunction was found in the wiring and the resistance was OK:
Checking wiring
- Remove the Transmission Control Module (TCM) J217. Refer to → Transmission Control Module, Replacing .
- Using a multimeter , check the Tiptronic Switch F189 electrical harness connector terminals to the Transmission Control Module (TCM) J217 electrical harness connector terminals for an open circuit.
| Tiptronic Switch F189 electrical harness connector T10p terminals | Transmission Control Module (TCM) J217 electrical connector T20e terminals |
|---|---|
| 3 | 20 |
| 4 | 13 |
| 5 | 19 |
| 6 | Gnd |
| 7 | Fuse SC6 |
| 8 | T32/17 of J285 |
Specified value: 1.5 Ω Max.
If the specification was not obtained:
- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
- If necessary, repair the faulty wiring connection.
If no malfunction was found in the wiring and the resistance was OK:
- Replace the Transmission Control Module (TCM) J217. Refer to → Transmission Control Module, Replacing .
- Assembly is performed in the reverse of the removal.
- Check the DTC memory.
- If necessary, erase DTC memory of the Transmission Control Module (TCM) J217. Refer to Diagnostic Mode 04 - Reset/Delete Diagnostic Data .
- Generate readiness code. Refer to Readiness Code .