Electrical Components For Regulating Transmission 09L, Checking

Electrical Components For Regulating Transmission 09L, Checking

Check the Technical Bulletins for information that may supersede any information included.

Safety precautions

CAUTION:
Observe the following for all installations, especially in engine compartment due to lack of room:
- Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
- Watch for sufficient clearance to all moving or hot components.
- Shift selector lever into position -P- and engage parking brake before working with the engine running.

NOTE:
- Certainly you have received an electrical shock once before when touching something made out of metal. The reason for this is the electrostatic charge of the human body. This charge can lead to functional problems by touching the electrical components of the transmission and selector lever mechanism.
- Touch a grounded object, e.g. a water pipe or a lifting platform, before working on the electrical components.
- Do not make direct contact on connector terminals of the Mechatronic unit.
- The batteries must only be disconnected and connected with the ignition switched off, since the Mechatronic unit can otherwise be damaged.

If special testing equipment is required during road test, note the following:
- Test equipment must always be secured to the rear seat and operated from there by a second person.

If test and measuring equipment is operated from the passenger seat, the person seated there could be injured in the event of an accident involving deployment of the passenger side airbag.

NOTE:
- For the electric components to work properly, a voltage of at least 12.5 V is required.
- Transmission Control Module (TCM) is equipped with On Board Diagnostic (OBD).
- It is possible that the control module will recognize a malfunction and store a DTC during some tests. Therefore the following work steps must be performed in the mentioned sequence after ending all tests and repairs.

1. Check the DTC memory.
2. If necessary, erase DTC memory of the Transmission Control Module (TCM) J217.
3. Generate readiness code.