DESCRIPTION
The brake hold operated indicator light illuminates when the brake hold system is operating (vehicle stopped due to brake fluid pressure hold) and turns off when the brake hold system operation is finished (brake fluid pressure decreases).
The brake hold system may not operate depending on vehicle conditions even when the system is in standby mode and the brake hold standby indicator light is illuminated.
When a malfunction occurs in the brake control system, the brake hold operated indicator light blinks.
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information.
Click here
PROCEDURE
1. |
PRE-CHECK |
(a) Check that the brake hold standby indicator light operates normally.
(b) If the brake hold operated indicator light does not illuminate although the brake hold standby indicator light is illuminated, check that the following brake hold operation (maintaining brake oil pressure) conditions are met.
HINT:
When a malfunction occurs in the brake control system, the brake hold operated indicator light blinks.
|
2. |
INSPECT COMBINATION METER ASSEMBLY |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch off.
(c) Perform the Active Test of the combination meter assembly using the Techstream.
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Tester Display |
---|
Indicat. Hold |
(d) Check the combination meter assembly.
OK:
The brake hold operated indicator light turns on or off in accordance with the Techstream operation.
NG | ![]() |
INSPECT METER / GAUGE SYSTEM |
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM (BRAKE HOLD OPERATED INDICATOR LIGHT) |
(a) Turn the ignition switch to ON.
(b) Select the Active Test on the Techstream.
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Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
BH Operated Light |
Brake hold operated indicator light |
Indicator light ON/OFF |
Observe combination meter |
(c) Select the Data List on the Techstream.
Click here
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
BH Operated Light |
Brake hold operated indicator light |
ON or OFF |
ON: Indicator light on OFF: Indicator light off |
- |
Active Test Display |
---|
BH Operated Light |
Data List Display |
---|
BH Operated Light |
(d) Check the operating condition of the brake hold operated indicator light when operating it using the Techstream.
Result |
Proceed to |
---|---|
Brake hold operated indicator light in the Data List does not change using the Active Test. |
A |
Brake hold operated indicator light in the Data List turns ON/OFF using the Active Test. |
B |
A | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
B | ![]() |
USE SIMULATION METHOD TO CHECK
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Toyota CH-R Service Manual > Navigation System: Data List / Active Test
DATA LIST / ACTIVE TEST
DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the Techstream to read the Data List allows the ...