Advanced Hydraulic Booster

Advanced Hydraulic Booster DTC Troubleshooting: 41

DTC 41:

Accumulator Stored Pressure Low

1. Check for brake fluid leakage at the servo unit and the power unit Testing and Inspection.

NOTE: Check the high pressure lines for leaks, particularly on the power unit, the servo unit, and the master cylinder.

Is there a fluid leak?

YES -

Repair the brake fluid leak Testing and Inspection.�

NO -

Go to step 2.

2. Turn the ignition switch to ON (II).

3. Clear the DTC with the HDS.

4. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

5. Wait at least 2 minutes.

6. Check for DTCs with the HDS.

Is DTC 41 indicated?

YES -

Go to step 7.

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.�

7. Turn the ignition switch to LOCK (0).

8. Replace the accumulator Overhaul.

9. Turn the ignition switch to ON (II).

10. Clear the DTC with the HDS.

11. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

12. Wait at least 2 minutes.

13. Check for DTCs with the HDS.

Is DTC 41 indicated?

YES -

Replace the servo unit Service and Repair.�

NO -

The system is OK at this time.�