Toyota Corolla Cross: Electric Parking Brake Switch Signal Compare Failure (C060962)
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 |
|---|---|---|---|---|---|
|
C060962 |
Electric Parking Brake Switch Signal Compare Failure |
|
|
DTC stored |
An electric parking brake system malfunction is displayed on the multi-information display. |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- If the electric parking brake switch is held near the lock position but not fully in the lock position for 1 second or more, a DTC may be stored due to one of the two contacts being ON while the other is OFF. (This is not a system malfunction.)
- The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds 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 (red) blinks when the ignition switch is first turned ON.
PROCEDURE
|
1. |
READ VALUE USING GTS (EPB SWITCH) |
(a) Operate the electric parking brake switch (electric parking brake switch assembly) and check that the value of "EPB Switch" in the Data List changes between Lock and Release in accordance with the operation of the switch.
Chassis > Brake/EPB > Data List|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
EPB Switch |
Electric parking brake switch (electric parking brake switch assembly) input |
OFF / Lock / Release / Unknown |
OFF: Lock switch and release switch are off Lock: Lock switch on Release: Release switch on |
When not normal, electric parking brake switch (electric parking brake switch assembly) release side system may be malfunctioning HINT: EPB stands for electric parking brake. |
|
Tester Display |
|---|
|
EPB Switch |
(b) Check the mode condition on the GTS changes according to electric parking brake switch (electric parking brake switch assembly) operation.
OK:
The value of EPB Switch changes between Lock and Release in accordance with switch operation.
| NG | .gif)
|
GO TO STEP 4 |
|
.gif)
|
2. |
CLEAR DTC |
(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs(b) Turn the ignition switch off.
|
|
3. |
CHECK DTC |
(a) Check for DTCs.
Chassis > Brake/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 |
|
4. |
INSPECT ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
Click here
| NG |
|
REPLACE ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
|
|
5. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)) |
(a) Disconnect the I257 electric parking brake switch (electric parking brake switch assembly) connector.
(b) Disconnect the A151 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 |
|---|---|---|
|
A151-31 (SWI1) - I257-7 (SWI1) |
Always |
Below 1 Ω |
|
A151-32 (SWO1) - I257-8 (SWO1) |
Always |
Below 1 Ω |
|
A151-15 (SWI2) - I257-1 (SWI2) |
Always |
Below 1 Ω |
|
A151-16 (SWO2) - I257-2 (SWO2) |
Always |
Below 1 Ω |
|
A151-31 (SWI1) or I257-7 (SWI1) - Body ground |
Always |
10 kΩ or higher |
|
A151-32 (SWO1) or I257-8 (SWO1) - Body ground |
Always |
10 kΩ or higher |
|
A151-15 (SWI2) or I257-1 (SWI2) - Body ground |
Always |
10 kΩ or higher |
|
A151-16 (SWO2) or I257-2 (SWO2) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CLEAR DTC |
(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs(b) Turn the ignition switch off.
|
|
7. |
CHECK DTC |
(a) Check for DTCs.
Chassis > Brake/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 |
READ NEXT:
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DESCRIPTION
DTC No.
Detection Item
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Trouble Area
Memory
Note
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DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Memory
Note
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DESCRIPTION
DTC No.
Detection Item
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Trouble Area
Memory
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SEE MORE:
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a DTC is detected, the multiplex network door ECU stores the current vehicle state as Freeze Frame Data.
CHECK FREEZE FRAME DATA (a) Enter the following menus: Body Electrical / Back Door / Trouble Codes. Body Electrical > Back Door
Tester D
Central Gateway ECU System Internal Failure (B102004)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
DTC Output from
Priority
Note
B102004
Central Gateway ECU System Internal Failure
A malfunction in the non-vola
