Automatic Transmission
Transmission Control Module (TCM) receives information from components that affect shifts and forwards this information to solenoid valves, which control slide valves in valve body.
Safety Precautions
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.
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.
For the electric components to work properly, a voltage of at least 11.5 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.
-- Check DTC memory DIAGNOSTIC MODE 03 - READ DTC MEMORY ,
-- Erase DTC memory DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
-- For completion, generate readiness code READINESS CODE