Programming and Relearning

PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM: INITIALIZATION

INITIALIZATION
NOTICE:
- If the electric parking brake ECU or electric parking brake actuator is replaced, perform the "RESET MEMORY" and "ACQUIRE TENSION SENSOR ZERO POINT" procedures.
- Even after the power switch is turned OFF, the electric parking brake ECU may store a DTC as a result of removing a connector or fuse, as the ECU is still operating. Therefore, during inspection or replacement, turn the power switch OFF and wait for 20 seconds before removing the following: 1) connectors of the electric parking brake ECU, and 2) fuses of the electric parking brake system circuit.

1. RESET MEMORY (with Techstream)
(a) Turn the power switch OFF.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch ON (IG) and the Techstream on.
(d) Enter the following menus: Chassis / Electric Parking Brake / Utility / Reset Memory.
(e) Follow the tester display and perform reset memory.
HINT: When the reset memory is completed, the parking brake indicator light (RED) will blink at 0.5 seconds intervals.





2. RESET MEMORY (without Techstream)
(a) Turn the power switch OFF.





(b) Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
SST: 09843-18040
NOTICE:
Do not connect the wrong terminals, as this will cause parts to be damaged.

(c) Turn the power switch ON (IG).
HINT: The parking brake indicator light (RED) will blink at 0.25 seconds intervals.

(d) Perform both of the following procedures within 8 seconds:
(1) ->->->Perform the following with the electric parking brake switch twice: lock condition off release condition off.
(2) ->->->Perform the following with the brake pedal: depress release depress release.





(e) With the power switch ON (IG), disconnect the connection of terminals 13 (TC) and 4 (CG) of the DLC3.
(f) Check that the parking brake indicator light (RED) blinks at 0.5 seconds intervals.
NOTICE:
If terminals 13 (TC) and 4 (CG) of the DLC3 are not disconnected, the blinking pattern (0.5 seconds intervals) cannot be checked.
HINT: If the parking brake indicator light (RED) blinking pattern (0.5 seconds intervals) is confirmed, the clear procedure is completed. If not confirmed, repeat the procedures above.

3. ACQUIRE TENSION SENSOR ZERO POINT
(a) After performing reset memory, perform the release control. Check that the parking brake indicator light (RED) turns off.
4. PARKING BRAKE BEDDING
CAUTION:
Performing parking brake bedding forms the friction surfaces of the parking brake shoe and rear disc, which creates the basic braking force of the parking brake. If bedding is not performed, the parking brake performance may not be normal.
NOTICE:
If one of the following is performed, perform parking brake bedding.
- Rear disc is replaced or removed and installed
- Parking brake shoe is replaced or removed and installed
- Electric parking brake actuator is replaced or removed and installed

(a) Turn the power switch OFF.





(b) Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3.
SST: 09843-18040
NOTICE:
Do not connect the wrong terminals, as this will cause parts to be damaged.

(c) Turn the power switch ON (IG).
(d) Perform the following procedures with the electric parking brake switch within 8 seconds:
(1) Turning the lock switch ON and OFF 3 times.
(2) Turn the release switch ON and OFF 3 times.





(e) Check that the system is in test mode.
HINT:
- When the system enters test mode, the parking brake indicator light (RED) starts blinking.
- The multi-information display shows "EPB TEST" (*). If it is not displayed, repeat the procedures above.
- *: EPB stands for electric parking brake.





(f) Perform parking brake bedding.
(1) Drive the vehicle at 30 km/h (19 mph).
(2) Push the parking brake switch to the lock side for 5 seconds.
NOTICE:
The braking power is generated from the parking brake while driving the vehicle. This will cause the vehicle speed to decrease. Depress the acceleration pedal to maintain the speed at 30 km/h (19 mph).
HINT:
- The parking brake indicator light (RED) stops blinking at 0.125 seconds intervals, and illuminates.
- The buzzer turns ON (beeping sound).
- The tension is automatically adjusted.
(3) After 5 seconds, check that the buzzer and the parking brake indicator light (RED) turn off.
HINT: The brake force decreases.
(4) Release the parking brake lock switch.