Advanced Hydraulic Booster

DTC 33: RNO Solenoid Valve Malfunction

DTC 34: RNC Solenoid Valve Malfunction

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0).
4. Turn the ignition switch to ON (II).
5. Check for DTCs with the HDS.

Is DTC 33 or 34 indicated?

YES - Replace the servo unit.

NO - Go to step 6.

6. Do the REGENERATIVE BRAKE TEST in the FUNCTION TEST with the HDS.

Does the valve operate?

YES - Intermittent failure, the system is OK at this time. Check for loose terminals at the servo unit 25P connector. Refer to intermittent failures troubleshooting.

NO - Replace the servo unit.