DESCRIPTION
When the electric parking brake switch is pulled, a lock request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly. When the electric parking brake switch is pushed, a release request signal is sent from the skid control ECU (brake actuator assembly) to the parking brake actuator assembly.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
Note |
---|---|---|---|---|---|
C13B4 |
EPB Switch Malfunction |
|
|
DTC stored |
An electric parking brake system malfunction is displayed on the multi-information display. |
Vehicle Condition |
|||||
---|---|---|---|---|---|
Pattern 1 |
Pattern 2 |
Pattern 3 |
Pattern 4 |
||
Diagnosis Condition |
- |
- |
- |
- |
- |
Malfunction Status |
Parking brake switch power supply voltage from the +BS terminal less than 7 V |
○ |
- |
- |
- |
Parking brake switch open circuit is detected |
- |
○ |
- |
- |
|
Parking brake switch short circuit is detected |
- |
- |
○ |
- |
|
Parking brake switch stuck malfunction |
- |
- |
- |
○ |
|
Detection Time |
1 second or more |
0.3 seconds or more |
0.3 seconds or more |
- |
|
Number of Trips |
1 trip |
1 trip |
1 trip |
1 trip |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
INSPECT ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
(a) Inspect the electric parking brake switch (electric parking brake switch assembly).
Click here
NG |
REPLACE ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
|
2. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)) |
(a) Disconnect the F67 electric parking brake switch (electric parking brake switch assembly) connector.
(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-31 (SWI1) - F67-6 (SWI1) |
Always |
Below 5 Ω |
A42-32 (SWO1) - F67-5 (SWO1) |
Always |
Below 5 Ω |
A42-15 (SWI2) - F67-4 (SWI2) |
Always |
Below 5 Ω |
A42-16 (SWO2) - F67-3 (SWO2) |
Always |
Below 5 Ω |
A42-31 (SWI1) or F67-6 (SWI1) - Body ground |
Always |
10 kΩ or higher |
A42-32 (SWO1) or F67-5 (SWO1) - Body ground |
Always |
10 kΩ or higher |
A42-15 (SWI2) or F67-4 (SWI2) - Body ground |
Always |
10 kΩ or higher |
A42-16 (SWO2) or F67-3 (SWO2) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK DTC |
(a) Clear the DTCs.
Click here
Chassis > ABS/VSC/TRAC/EPB > Clear DTCs(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check for DTCs.
Click here
Chassis > ABS/VSC/TRAC/EPB > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are output |
A |
DTCs are not output |
B |
A |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
B |
USE SIMULATION METHOD TO CHECK |
Toyota CH-R Service Manual > Glove Box Light: Removal
REMOVAL
PROCEDURE
1. REMOVE REAR CONSOLE BOX ASSEMBLY
Click here
2. REMOVE FRONT DOOR SCUFF PLATE RH
HINT:
Use the same procedure as for the LH side.
Click here
3. REMOVE COWL SIDE TRIM BOARD RH
HINT:
Use the same procedure as for the LH side.
Click here
4. REMOVE NO. 2 INSTR ...
Toyota CH-R Service Manual > Vehicle Stability Control System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
If there are no DTCs output and the problem still occurs, check the suspected
areas for each problem symptom in the order given in the following table and proceed
to the relevant troubleshooting page.
NOTICE:
When replacing the skid control ECU (brake actuator assembly) ...