Left hand steering column
1. Pipe to the front left wheel
2. Pipe to the rear right wheel
3. Pipe to the rear left wheel
4. Pipe to the front right wheel
5. MC2 (master brake cylinder, 2nd circuit)
6. MS1 (master brake cylinder, 1st circuit)
7. Control unit connector (GEBU)
8. Control unit (GECU)
9. Damper
10. Bracket
Right hand steering column
1. Pipe to the front left wheel
2. Pipe to the rear right wheel
3. Pipe to the rear left wheel
4. Pipe to the front right wheel
5. MC2 (master brake cylinder, 2nd circuit)
6. MS1 (master brake cylinder, 1st circuit)
7. Control unit connector (GEBU)
8. Control unit (GECU)
9. Damper
10. Bracket
Removal
1. Turn off the ignition.
2. Disconnect the brake lines from the control unit (GECU) by unscrewing their nuts with a wrench counterclockwise.
Note: Tightening torque: ABS: 12.7-16.7 Nm. ESP: 18.6-22.6 Nm.
Left hand steering column
Right hand steering column
3. Disconnect the ECU connector by pressing the lock upward.
4. Loosen the bolts (A) and nut (B) of the unit bracket and remove the control unit (GECU) together with the bracket.
Note: Tightening torque: 16.7 - 25.5 Nm.
Left hand steering column
Right hand steering column
Attention.
1. It is strictly forbidden to disassemble the control unit (GEBU).
2. Place the control unit (GECU) in the storage location.
3. Avoid shaking the control unit (GECU).
5. Unscrew the three bolts and remove the bracket from the control unit (GEBU).
Note: Tightening torque: 10.8 - 13.7 Nm.
Installation
1. Installation is carried out in reverse order.
2. Tighten the control unit (GECU) mounting bolts and nuts to the specified torque.
3. After installation, bleed the brake system.
Variant coding
2WD and 4WD vehicles use the same control units (ECU). To specify a specific vehicle, the control unit (ECU) must undergo variant coding.
Variant coding is necessary in the following cases:
- Replacement of the control unit (GEBU).
- Occurrence of fault code C1702 (variant coding error).