DTC 34: MASTER CYLINDER BRAKE FLUID PRESSURE SENSOR CIRCUIT OPEN/SHORT;
DTC 35: MASTER CYLINDER BRAKE FLUID PRESSURE SENSOR CENTER POSITION
ERROR; DTC 36: MASTER CYLINDER BRAKE FLUID PRESSURE SENSOR SHIFT ERROR
1. Clear the DTCs with the HDS (see General Troubleshooting Information ).
2. Watch the ACC indicator.
Does the ACC indicator go off?
YES -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
NO -Go to step 3.
3. Press the brake pedal.
4. Watch the ACC indicator.
Does the ACC indicator go off?
YES -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
NO -Go to step 5.
5. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 34, 35, or 36 indicated?
YES -Go to step 6.
NO -Troubleshoot the indicated DTC(s).
6. With the brake pedal released, check the master cylinder brake fluid pressure
voltage (BRAKE P) with the HDS.
Is there about 0.5 V?
YES -Go to step 7.
NO -Check the VSA system.
7. Test the brake booster (see MASTER CYLINDER INSPECTION ).
8. Start the engine, then press the brake pedal with about 314 N (32 kgf, 70.6 lbf)
pressure.
9. Check the master cylinder brake fluid pressure voltage (BRAKE P) with the HDS.
Is there about 2.5 V?
YES -Go to step 10.
NO -Check the VSA system.
10. Check the brake switch signal (BRAKE SW (N.O.)) with the HDS.
Does the indication show ON when the brake pedal is pressed, and show OFF when the
brake pedal is released?
YES -Check for loose or poor connections. If OK, update the ACC unit (see ACC UNIT
UPDATE ), then recheck. If the ACC unit was already updated, replace the ACC unit
(see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION ).
NO -Go to step 11.
11. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 60, 110, or 111 indicated?
YES -Troubleshoot the indicated DTC(s).
NO -Troubleshoot the brake pedal position switch signal circuit (see BRAKE PEDAL
POSITION SWITCH SIGNAL CIRCUIT TROUBLESHOOTING ).
DTC 35: MASTER CYLINDER BRAKE FLUID PRESSURE SENSOR CENTER POSITION
ERROR; DTC 36: MASTER CYLINDER BRAKE FLUID PRESSURE SENSOR SHIFT ERROR
1. Clear the DTCs with the HDS (see General Troubleshooting Information ).
2. Watch the ACC indicator.
Does the ACC indicator go off?
YES -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
NO -Go to step 3.
3. Press the brake pedal.
4. Watch the ACC indicator.
Does the ACC indicator go off?
YES -Intermittent failure, the system is OK at this time. Check for loose or poor
connections.
NO -Go to step 5.
5. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 34, 35, or 36 indicated?
YES -Go to step 6.
NO -Troubleshoot the indicated DTC(s).
6. With the brake pedal released, check the master cylinder brake fluid pressure
voltage (BRAKE P) with the HDS.
Is there about 0.5 V?
YES -Go to step 7.
NO -Check the VSA system.
7. Test the brake booster (see MASTER CYLINDER INSPECTION ).
8. Start the engine, then press the brake pedal with about 314 N (32 kgf, 70.6 lbf)
pressure.
9. Check the master cylinder brake fluid pressure voltage (BRAKE P) with the HDS.
Is there about 2.5 V?
YES -Go to step 10.
NO -Check the VSA system.
10. Check the brake switch signal (BRAKE SW (N.O.)) with the HDS.
Does the indication show ON when the brake pedal is pressed, and show OFF when the
brake pedal is released?
YES -Check for loose or poor connections. If OK, update the ACC unit (see ACC UNIT
UPDATE ), then recheck. If the ACC unit was already updated, replace the ACC unit
(see ADAPTIVE CRUISE CONTROL (ACC) UNIT REMOVAL/INSTALLATION ).
NO -Go to step 11.
11. Check for DTCs with the HDS (see General Troubleshooting Information ).
Is DTC 60, 110, or 111 indicated?
YES -Troubleshoot the indicated DTC(s).
NO -Troubleshoot the brake pedal position switch signal circuit (see BRAKE PEDAL
POSITION SWITCH SIGNAL CIRCUIT TROUBLESHOOTING ).
