DTC 65: Brake Fluid Level Low

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).

Check the brake fluid level in the master cylinder reservoir tank (see BRAKE SYSTEM BLEEDING ).
Is brake fluid level OK?

YES -Go to step 2.

NO -
- Inspect the brake lines and hoses for leaks (see BRAKE HOSE AND LINE INSPECTION ), and repair as needed.
- Inspect the front brake pads (see FRONT BRAKE PAD INSPECTION AND REPLACEMENT ), and the rear brake shoes (see REAR DRUM BRAKE INSPECTION ), and replace any worn out brake pads or brake shoes then recheck.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Turn the ignition switch to LOCK (0).
Disconnect the brake fluid level switch 2P connector (see step 1 PARKING BRAKE SWITCH TEST ).
Turn the ignition switch to ON (II).
Check for DTCs with the HDS.
Is DTC 65 indicated?

YES -Go to step 8.

NO -Replace the master cylinder (see MASTER CYLINDER REPLACEMENT ).
Turn the ignition switch to LOCK (0).
Disconnect the gauge control module 32P connector (see GAUGE CONTROL MODULE REPLACEMENT ).
Check for continuity between brake fluid level switch 2P connector terminal No. 2 and body ground.

Fig 1: Checking For Continuity Between Brake Fluid Level Switch 2P Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between the gauge control module and the brake fluid level switch.

NO -Go to step 11.
Update the VSA modulator-control unit if it does not have the latest software (see VSA MODULATOR-CONTROL UNIT UPDATE ).
Turn the ignition switch to LOCK(0), then turn it to ON (II) again.
Check for DTCs with the HDS.
Is DTC 65 indicated?

YES -Check for loose terminals in the VSA modulator-control unit 47P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ).

NO -If the VSA modulator-control unit was updated, troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCS TROUBLESHOOTING .