Test Point 6 - Transmission Protection Switch
TEST POINT 6 - Transmission protection switch (automatic transmission only) - Fault code 2_25Possible Causes, Elimination, Remarks
To protect the transmission shift elements, the ignition is retarded during transmission shifts.
If a fault is indicated here, connect the voltmeter to the socket sleeve side of terminals 1 and 2 at the 3-pin plug in the trunk well.
- Switch on the ignition. Display: approx. 5 V
Connect the ohmmeter to terminals 1 and 2 on the plug side
NOTE: The switch is checked with the engine running. Apply the handbrake and operate the foot brake. Comply with relevant safety regulations.
Display in position P or N: infinite resistance (switch open)
Display in position D: < 1 Ohm (switch closed).
If these values are not reached, measure directly at the switch or renew.