WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
Even if the electric parking brake is operating normally, the parking brake indicator light (red) on the combination meter may be malfunctioning.
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication system DTCs are output.
Click here
Result |
Proceed to |
---|---|
DTCs are not output |
A |
DTCs are output |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM
|
|
2. |
VEHICLE OPERATION CHECK |
(a) When the vehicle's tires are lifted off the ground and the Techstream is used to operate the electric parking brake, check the condition of the rear tires.
Click here
Result |
Proceed to |
---|---|
Lock and release operation is normal and parking brake indicator light turns off or blinks (red) |
A |
Lock and release operation is malfunctioning and parking brake indicator light illuminates (red) or turns off according to switch operation |
B |
Lock and release operation is malfunctioning and parking brake indicator light turns off or blinks (red) |
C |
B | ![]() |
INSPECT REAR BRAKE |
C | ![]() |
GO TO STEP 5 |
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM (PARKING BRAKE LIGHT) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Electric Parking Brake / Data List.
(f) Read the Data List according to the display on the Techstream.
Click here
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
PKB Light |
Parking brake indicator light (red) |
ON or OFF |
|
Tester Display |
---|
PKB Light |
(g) Select the Data List on the Techstream.
Click here
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
Parking Brake Light |
Parking brake indicator light (red) output signal |
OFF, Light or Blink |
OFF: Parking brake indicator light (red) turns off Light: Parking brake indicator light (red) illuminates Blink: Parking brake indicator light (red) flashes |
- |
Tester Display |
---|
Parking Brake Light |
(h) Check the operating condition of the parking brake indicator light (red) when operating it using the Techstream.
Result |
Proceed to |
---|---|
Parking brake indicator light (red) in the Data List does not change using the Active Test. |
A |
Parking brake indicator light (red) in the Data List turns ON/OFF using the Active Test. |
B |
A | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
|
4. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Perform the Active Test of the combination meter assembly using the Techstream.
Click here
Tester Display |
---|
Indicat. Park |
(b) Check the combination meter assembly.
OK:
Parking brake indicator light (red) turns on or off in accordance with Techstream operation.
OK | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
NG | ![]() |
GO TO METER / GAUGE SYSTEM |
5. |
CHECK HARNESS AND CONNECTOR (BATTERY - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)) |
(a) Turn the ignition switch off.
(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector. |
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A42-36 (IG1) - Body ground |
Ignition switch ON |
11 to 14 V |
OK | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Toyota CH-R Service Manual > Lin Communication System: LIN Communication Bus Malfunction (B2325)
DESCRIPTION
If the main body ECU (multiplex network body ECU) detects a communication error
with an ECU connected to the door bus lines for 7 seconds or more, DTC B2325 will
be stored.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
...
Toyota CH-R Service Manual > Seat Belt Warning System(w/ Occupant Classification System): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
When replacing the combination meter assembly, always replace it with a new one.
If a combination meter assembly which was installed to another vehicle is used,
the information stored in it will not match the information from the vehicle and
a DTC may be stored ...