Toyota Corolla Cross: Electric Parking Brake System AUTO Function Circuit
DESCRIPTION
The skid control ECU (brake actuator assembly) receives shift position signals from the hybrid vehicle control ECU via CAN communication to control the electric parking brake system AUTO function (shift-linked function).
The electric parking brake system AUTO function (shift-linked function) is automatically disabled when the ignition switch is ON, the brake pedal is depressed and the shift lever is moved out of P. Then, if the shift lever is moved to P, the AUTO function (shift-linked function) automatically operates to apply the electric parking brake.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- The AUTO function (shift-linked function) will not be automatically disabled when the ignition switch is ON, the brake pedal is depressed and the shift lever is moved out from P if the electric parking brake switch assembly is moved to the engage side. The AUTO function (shift-linked function) will not automatically operate to apply the electric parking brake when the shift lever is moved to P if the electric parking brake switch assembly is moved to the release side.
- The electric parking brake may still operate up to 4 minutes after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 4 minutes or more.
- After replacing the skid control ECU (brake actuator assembly), perform
acceleration sensor zero point calibration and store system information
memorization.
Click here
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- When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light blinks (red) when the ignition switch is first turned ON.
PROCEDURE
|
1. |
CHECK DTC (HYBRID CONTROL SYSTEM) |
(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
| A | .gif)
|
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
| B |
|
GO TO HYBRID CONTROL SYSTEM |
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Operation Method
OPERATION METHOD
PROCEDURE
1. PRECAUTION
Click here
2. REMOVE REAR SEAT CUSHION ASSEMBLY
for HEV Model:
Click here
for Gasoline Model:
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3. REMOVE REAR SEAT CUSHION L
Parking Brake System
Precaution
PRECAUTION
NOTICE:
If the battery is connected, the parking brake will operate when the
electric parking brake switch assembly is pulled to the lock side even if
the ignitio
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT SERVICE PLUG GRIP
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition Specified Condition
Service Plug Grip
Always Below 1 Ω
If the result is
Reassembly
REASSEMBLY CAUTION / NOTICE / HINT COMPONENTS (REASSEMBLY)
Procedure Part Name Code
1 REAR SIDE MARKER LIGHT BULB
81550S -
- -
2 REAR SIDE MARKER LIGHT SOCKET
- -
- -
*A for Bulb Type Clearance Light
- -
*1
