Toyota CH-R Service Manual: Brake Hold Operated Indicator Light Circuit
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
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PROCEDURE
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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.
- Shift lever is not P or R.
- Driver is depressing brake pedal and vehicle is fully stopped.
- Driver is not depressing accelerator pedal.
- Vehicle is not on steep decline.
HINT:
When a malfunction occurs in the brake control system, the brake hold operated indicator light blinks.
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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.
Click here
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Tester Display |
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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.
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INSPECT METER / GAUGE SYSTEM |
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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.
Click here
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Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
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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
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Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
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BH Operated Light |
Brake hold operated indicator light |
ON or OFF |
ON: Indicator light on OFF: Indicator light off |
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Active Test Display |
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BH Operated Light |
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Data List Display |
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BH Operated Light |
(d) Check the operating condition of the brake hold operated indicator light when operating it using the Techstream.
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Result |
Proceed to |
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Brake hold operated indicator light in the Data List does not change using the Active Test. |
A |
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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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Brake Warning Light does not Come ON
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination
meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid c ...
Brake Hold Standby Indicator Light Circuit
DESCRIPTION
When the brake hold switch (electric parking brake switch assembly) is turned
on with the ignition switch turned to ON, the brake hold standby indicator light
illuminates when brake h ...
Other materials:
Toyota CH-R Service Manual > Vehicle Stability Control System: System Description
SYSTEM DESCRIPTION
FUNCTION DESCRIPTION
(a) Enhanced-VSC
(1) Effects cooperative control with the power steering ECU assembly in order
to provide steering assist in accordance with the operating conditions of the vehicle.
(b) Anti-lock Brake System (ABS)
(1) The ABS helps prevent the wheels f ...
Toyota CH-R Service Manual > Power Steering System: Diagnosis System
DIAGNOSIS SYSTEM
CHECK DLC3
(a) Check the DLC3.
Click here
CHECK WARNING LIGHT
(a) When a problem occurs in the power steering system, the EPS warning light
in the combination meter assembly comes on to inform the driver of the problem.
*a
EPS Warning Light
...
Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
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KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual
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