RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604232 HYBRID CONTROL SYSTEM J

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  Brake Override System  


DESCRIPTION

When the vehicle is being driven with the accelerator pedal depressed, depressing the brake pedal without releasing the accelerator pedal will activate the brake override system to restrict hybrid system output. The conditions for activating the brake override system as well as the items that are controlled are explained below.

C280825E82
3.573,3.365 5.969,3.719 2.396,0.354 10 false Hybrid Vehicle Control ECU 2.74,2.917 3.677,3.115 0.938,0.198 10 false Vehicle Speed 0.469,3.302 2.49,3.51 2.021,0.208 10 false Skid Control ECU Assembly 0.365,1.219 2.365,1.542 2,0.323 10 false Accelerator Position Sensor 2.49,1.01 3.813,1.438 1.323,0.427 10 false Accelerator Opening Angle 2.594,1.948 3.583,2.313 0.99,0.365 10 false Braking Torque 5.49,1.365 7.021,1.604 1.531,0.24 10 false Meter Display Request 5.51,2.344 6.896,2.875 1.385,0.531 10 false Hybrid System Output Request 0.198,0.219 2.073,0.406 1.875,0.188 10 false Brake Override System:

Activation Conditions:
·

The accelerator pedal and brake pedal are depressed at the same time.

NOTICE:

Brake override control may not be performed depending on the relationship between accelerator opening and vehicle speed.




Items Controlled:
·

Controls hybrid system output

HINT:
·

When the control is operating, hybrid system output is controlled in accordance with the brake pedal stroke.

·

When the hybrid system output is reduced because the accelerator pedal and brake pedal are depressed at the same time, an indicator is displayed on the meter. (Operation of the system can be confirmed when the indicator is displayed on the meter.)





Deactivation Conditions:
·

The accelerator pedal or brake pedal is released.



Example:
·

Drive at 10 km/h (6 mph), depress the accelerator pedal by 1/2 to 3/4 and keep it in that position.

·

Under these conditions, if hybrid system output is controlled when the brake pedal is depressed by the left foot of the driver, it can be confirmed that the brake override system has operated.



CAUTION / NOTICE / HINT

CAUTION:

Perform this road test only in an appropriate safe location, in accordance with all local laws.

Pay careful attention to the surroundings when performing the road test.


HINT:

The brake override system restricts hybrid system output if the brake pedal is depressed when driving with the accelerator pedal depressed. If a customer reports experiencing a loss of power (requested accelerator torque) after the accelerator and brake pedals have both been intentionally depressed, explain that this is not a malfunction, and depressing both the accelerator and brake pedals at the same time should be avoided.



PROCEDURE

1.CHECK DTC OUTPUT (HEALTH CHECK)
a.

Enter the following menus: System Select / Health Check.


b.

Check for DTCs.

Result:
Result Proceed to
No DTCs are output. A
DTCs are output. B



c.

Turn the ignition switch off.



A

2.READ VALUE USING GTS (MASTER CYLINDER CONTROL TORQUE)

B

GO TO DTC CHART

2.READ VALUE USING GTS (MASTER CYLINDER CONTROL TORQUE)
a.

Turn the ignition switch to ON (READY).


b.

Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List
Tester Display
Master Cylinder Control Torque
50003 397 89
Standard:
Inspection Condition Specified Condition
Brake pedal depressed Display changes according to brake pedal depression force


Result:
Proceed to
OK
NG



c.

Turn the ignition switch off.



OK

3.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %)

NG

CHECK BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY

Click hereBrake>BRAKE SYSTEM (OTHER)>BRAKE SYSTEM (for HEV Model)>ON-VEHICLE INSPECTION


3.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %)
a.

Read the values displayed on the GTS.

Powertrain > Hybrid Control > Data List
Tester Display
Accelerator Position Sensor No.1 Voltage %
Accelerator Position Sensor No.2 Voltage %
50003 397 23,24
Standard:
Inspection Condition Specified Condition
Accelerator pedal released → Depressed Changes continuously



b.

Turn the ignition switch off.


Result:
Proceed to
OK
NG



OK

4.READ VALUE USING GTS (VEHICLE SPEED)

NG

REPLACE ACCELERATOR PEDAL(W/SENSOR) ROD ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>ACCELERATOR PEDAL SENSOR>REMOVAL


4.READ VALUE USING GTS (VEHICLE SPEED)
a.

Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List
Tester Display
Vehicle Speed
50003 397 12
Standard:
Inspection Condition Specified Condition
Vehicle stopped 0 km/h (0 mph)
Vehicle being driven at a constant speed
(16 to 64 km/h (10 to 40 mph)) 		No large fluctuations in displayed speed


CAUTION:

Perform this road test only in an appropriate safe location, in accordance with all local laws.


HINT:

Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.



b.

Turn the ignition switch off.


Result:
Proceed to
OK
NG



OK

5.READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED)

NG

GO TO METER / GAUGE SYSTEM (SPEED SIGNAL CIRCUIT)

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>Speed Signal Circuit


5.READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED)
a.

Read the values displayed on the GTS.

Chassis > Brake/EPB > Data List
Tester Display
FR Wheel Speed
FL Wheel Speed
RR Wheel Speed
RL Wheel Speed
50003 435 13,14,15,16
Standard:
Inspection Condition Specified Condition
Vehicle stopped 0 km/h (0 mph)
Vehicle being driven at a constant speed
(16 to 64 km/h (10 to 40 mph)) 		No large fluctuations in displayed speed


CAUTION:

Perform this road test only in an appropriate safe location, in accordance with all local laws.


HINT:

Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.



b.

Turn the ignition switch off.


Result:
Proceed to
OK
NG



OK

END

NG

INSPECT FRONT OR REAR SPEED SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING