Checking the control module
HINT: To determine whether the control module is faulty, disconnect the connector for the gear selector module (GSM) and temporarily connect a cable to short-circuit the control module terminals.
- Ignition off
- The breakout box connected
- Disconnect the 6-pin connector for the gear selector module (GSM)
- Connect a temporary cable between terminals #A53 and #B31 on the breakout box.CAUTION:
Thoroughly check that the cable is connected to the correct terminals. Also check that there is no risk of unintentional short-circuits.
- Ignition on
- Read off the status.
Check that the status indicates "1" when the cable is connected.
Disconnect the cable end that is connected to terminal #A35 and move the cable to terminal #A53.
NOTE:Leave the cable end connected to terminal #B31 in place.
Check that the status changes to "0" when the cable has been transferred to terminal #A53.
If the status shifts to "0" the transmission control module (TCM) is OK. Replace the circuit board in the top panel.
If the status shifts to "0" the transmission control module (TCM) is faulty. Replace the control module.
Remedy as necessary.
Other information
- To connect the breakout box, see Connecting breakout box, Transmission control module (TCM)
- For information about signals, see Signal description. Transmission control module (TCM)
- To replace the transmission control module (TCM), see Transmission control module (TCM), replacing
- To replace the printed circuit board (standard), see Printed circuit board gear selector assembly / top panel, replacing
- To replace the printed circuit board (geartronic), see Printed circuit board gear selector assembly / top panel Geartronic, replacing .
- Continue
Refer to Verification