DTC 43

DTC 43: Master Cylinder Malfunction

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. With the ignition switch in ON (II), press the brake pedal several times.
4. Check for DTCs with the HDS.

Is DTC 43, 45, or 47 indicated?

YES - Replace the servo unit.

NO - Go to step 5.

5. Do the HYDRAULIC BOOSTER CAS TEST in the FUNCTION MENU with the HDS.
6. Check for DTCs with the HDS.

Is DTC 43, 45, or 47 indicated?

YES - Replace the servo unit.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals at the servo unit 25P connector. Refer to intermittent failures troubleshooting.