Memory Adjustable Pedal Operation
The power adjustable pedals memory feature stores the current accelerator and brake pedal positions and recalls the previously stored pedal positions for a specified driver as directed by the memory feature. The adjustable pedals with memory feature
- Are operational with the ignition switch ON or OFF.
- Can be adjusted forward or rearward using the adjustable pedal switch.
- Retains 2 separate driver's pedal positions.
- Updates the retained pedal position when that driver's memory is stored.
- Moves the pedal to the retained pedal position when that driver's memory is recalled.
- Stops pedal movement when any manual actuation of the pedal adjustment switch occurs while memory recall is moving the pedal.
Electronic Parking Brake (EPB) Operation
Pull the parking brake switch upward to engage the parking brake. Release the switch, and it will return to the neutral position. To release the parking brake, make sure the ignition is turned to ON, press the brake pedal, then push the parking brake switch down. The instrument cluster BRAKE warning lamp will illuminate and will remain illuminated until the parking brake is released.
The EPB will automatically release when the gearshift lever is moved from P (Park) with the ignition ON. The EPB will also disengage if a gear is selected and the accelerator pedal is pressed. The EPB will not release when the release switch is activated. If the battery is disconnected, the EPB system must be reset; the vehicle message center will display "APPLY PARK BRAKE" or "APPLY (P)".
Normal Operation
The red brake warning indicator is located on the instrument cluster. When the brake fluid in the brake master cylinder reservoir is below an acceptable level, and when the parking brake is engaged, the red brake warning will illuminate.
The adjustable brake and accelerator pedals with memory feature are controlled by the FEM and are operational with the ignition switch ON or OFF. The FEM supplies power to the adjustable pedal 2-way motor until the switch is released, or until the travel limit is reached. The memory feature allows the driver to program a personalized pedal position that can be recalled using the memory switches or remote keyless entry transmitters.
The adjustable brake pedals operate forward or rearward when the adjustable pedal switch is pushed in either direction and current flows from the FEM through circuit 34-AL19 (BU/BK) or circuit 32-AL19 (WH/GN). Ground to the switch is supplied by circuit 31 -AL19a (BK/GN). The adjustable pedal motor receives power from the FEM through circuit 34-AL18 (BU/RD) (rearward) or circuit 35-AL18 (VT/BU (forward). The adjustable motor connects to a cable that transmits motor rotation into the adjustable brake pedal assembly. Another cable transmits motor rotation between the brake pedal assembly and the accelerator pedal assembly.
The adjustable brake and accelerator pedals with memory feature are controlled by the FEM and are operational with the ignition switch ON or OFF. The FEM supplies power to the adjustable pedal 2-way motor until the switch is released, or until the travel limit is reached. The memory feature allows the driver to program a personalized pedal position that can be recalled using the memory switches or remote keyless entry transmitters.
The vehicle electrical system supplies 12 volts to the EPB module.
Voltage is supplied by circuit 30-CG16 (RD/BU) (power hot at all times). Ground is supplied by circuit 31 -CG16(BK/BU).
The EPB switch circuits 8-CG15 (WH/BU) and 10-CG15 (GY/VT) receive a reference voltage from the EPB module when the switch is in its neutral position. This voltage is between 3.5 and 4.5 volts. When the switch contacts close on the apply or release side, a resistor inside the switch is bypassed, causing the reference voltage on switch circuits 8-CG15 (WH/BU) or 10-CG15 (GY/VT) to change from 1.5 to 3.0 volts. When the EPB module receives this voltage range on the apply or release circuit, an output signal is generated to the actuator to apply or release the EPB.
The EPB switch circuits 8-CG15 (WH/BU) and 10-CG15 (GY/VT) receive a reference voltage from the EPB module when the switch is in its neutral position. This voltage is between 3.5 and 4.5 volts. When the switch contacts close on the apply or release side, a resistor inside the switch is shorted, causing the voltage on switch circuits 8-CG15 (WH/BU) or 10-CG15 (GY/VT) to change from 1.5 to 3.0 volts. When the EPB module receives this voltage range on the apply or release circuit, an output signal is generated to the actuator to apply or release the EPB.
The EPB 2-way motor receives power from circuit 32-CG19 (WH/VT) or 33-CG19 (YE/VT), depending the direction of the motor revolution. When the EPB is applied, circuit 32-CG19 (WH/VT) is equal to the battery voltage and circuit 33-CG19 (YE/VT) is equal to 0 volts. When the EPB is released, 32-CR19 (YE/VT) is equal to 0 volts and 33-CT19 (YE/VT) is equal to the battery voltage. Otherwise both circuits are at one half of the battery voltage.
The EPB 2-way motor receives power from circuit 32-CG19 (WH/VT) or 33-CG19 (YE/VT), depending on the direction of the motor revolution. When the EPB is applied, circuit 32-CG19 (WH/VT) is equal to the battery voltage and circuit 33-CG19 (YE/VT) is equal to 0 volts. When the EPB is released, 32-CR19 (YE/VT) is equal to 0 volts and 33-CT19 (YE/VT) is equal to the battery voltage. Otherwise both circuits are at one half of the battery voltage.
The EPB 2-way motor receives power from circuit 32-CG19 (WH/VT) or 33-CG19 (YE/VT), depending on the direction of the motor revolution. When the EPB is applied, circuit 32-CG19 (WH/VT) is equal to the battery voltage and circuit 33-CG19 (YE/VT) is equal to 0 volts. When the EPB is released, 32-CR19 (YE/VT) is equal to 0 volts and 33-CT19 (YE/VT) is equal to the battery voltage. Otherwise both circuits are at one half of the battery voltage.
The EPB actuator contains a Hall-effect sensor, which the EPB module uses to determine how long the EPB motor is required to run during an application or release of the parking brake. The Hall-effect sensor receives power (approximately 2 volts below the battery voltage) from the EPB module through circuit 7-CG20 (YE/VT). Circuit 8-CG20 (WH/VT) provides a signal to the EPB module and this signal will vary between 0 and 4.4 volts when the EPB motor is rotating. The voltage varies due to the presence of a magnetic field, which is being detected by the Hall-effect sensor. Ground to the Hall-effect sensor is supplied by circuit 9-CG20 (BN/VT).
The EPB system applies and releases the parking brake cables using an electric motor and gear connected to the parking brake cables. The cable ends are connected to the rear disc brake caliper lever. The lever applies and releases the brake piston toward or away from rear disc.
The yellow EPB system warning lamp (in the EPB switch) will illuminate at prove-out for 3 seconds when the ignition switch is cycled to RUN and will illuminate continuously (even with ignition OFF) when the EPB module has detected a fault in the system and DTCs are present.
The EPB 2-way motor receives power from circuit 32-CG19 (WH/VT) or 33-CG19 (YE/VT), depending on the direction of the motor revolution. When the EPB is applied, circuit 32-CG19 (WH/VT) is equal to the battery voltage and circuit 33-CG19 (YE/VT) is equal to 0 volts. When the EPB is released, 32-CR19 (YE/VT) is equal to 0 volts and 33-CT19 (YE/VT) is equal to the battery voltage. Otherwise both circuits are at one half of the battery voltage.
The EPB switch circuits 8-CG15 (WH/BU) and 10-CG15 (GY/VT) receive a reference voltage from the EPB module when the switch is in its neutral position. This voltage is between 3.5 and 4.5 volts. When the switch contacts close on the apply or release side, a resistor inside the switch is shorted, causing the voltage on circuits 8-CG15 (WH/BU) or 10 CG15 (GY/VT) to change from 1.5 to 3.0 volts. When the EPB module receives this voltage range on the apply or release circuit, an output signal is generated to the actuator to apply or release the EPB.