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Voltage Supply of Direct Shift Gearbox Mechatronic, Checking







Voltage Supply of Direct Shift Gearbox Mechatronic, Checking

Special tools, testers and auxiliary items required

multimeter.

Wiring diagram.

Test requirements

The Direct Shift Gearbox (DSG) Mechatronic (J743) fuses OK.





The Power Supply Relay (terminal 15) (J329) OK.

Battery voltage at least 12.5 volts.

All electrical consumers such as, lights and rear window defroster, switched off.

Selector lever in "P" or "N".

A/C switched off.

Ground (GND) connections between engine/transmission/chassis OK.

Ignition switched off.

Test procedure

- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check

Start diagnosis

- Disconnect the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector - 1 - by rotating counterclockwise.





Checking voltage supply, terminal 30

- Using a multimeter, check the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector terminals for voltage.

- Turn key on






Specified value: battery voltage.

If the specified value was not obtained:

- Turn key off

- Check the wiring connection for an open circuit.

- Check the wiring connection for damage, corrosion, loose or broken terminals.

- If necessary, repair the faulty wiring connection.

If the wiring and voltage were OK:

Voltage supply, terminal 15

- Using a multimeter, check the Direct Shift Gearbox (DSG) Mechatronic (J743) electrical harness connector terminals for voltage.

- Turn key on






Specified value: battery voltage.

If the specified value was not obtained:

- Turn key off

- Check the wiring connection for an open circuit.

- Check the wiring connection for damage, corrosion, loose or broken terminals.

- If necessary, repair the faulty wiring connection.

If the wiring and voltage were OK:

- Replace Direct Shift Gearbox (DSG) Mechatronic (J743). Refer to the appropriate service manual.

Final procedures

After the repair work, the following work steps must be performed in the following sequence:

1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 09.

2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.

3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Readiness Code.