Advanced Hydraulic Booster

DTC 31: NO Solenoid Valve Malfunction

DTC 32: NC 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 31 or 32 indicated?

YES - Replace the servo unit.

NO - Go to step 6.

6. Do the INCREASING MASTER CYLINDER PRESSURE 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.