Toyota CH-R Service Manual: Fail-safe Chart

• If there is a problem with sensor signals or actuator systems, the skid control ECU prohibits power supply to the brake actuator assembly and informs the ECM of a VSC system malfunction.

  The brake actuator assembly turns off the solenoids and the ECM stops its VSC control according to signals from the skid control ECU. The vehicle will operate in a manner similar to a vehicle that is not equipped with ABS, TRAC, VSC and brake hold systems.

  ABS control will be prohibited, but EBD control will continue to the extent that EBD control is possible. If EBD control is impossible, the brake system warning light (red indicator) will come on to warn the driver.

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• If a VSC system component malfunctions before VSC control begins, VSC control will be prohibited. If a system component malfunctions during VSC control, the system will gradually stop performing control so as not to trigger a sudden change in vehicle operation.

  If it is impossible for control to continue, the warning light comes on to inform the driver of system control termination.

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• When a malfunction occurs in the VSC system or electric parking brake system, brake hold control prohibits brake hold operation to prevent incorrect operation and protect the system.

  HINT:

  When control is prohibited, the brake hold operated indicator light blinks, and the code for the system where the malfunction occurred during diagnostic mode is displayed by the brake hold standby indicator light.

Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an ABS DTC is detected, the skid control ECU (brake actuator assembly) stores the current vehicle (ECU or sensor) state as Freeze Frame Data. (b) ...

Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any part ...

Other materials:

Toyota CH-R Service Manual > Navigation System: Parking Brake Switch Circuit
DESCRIPTION This circuit is from the skid control ECU (brake actuator assembly) to the radio and display receiver assembly. WIRING DIAGRAM PROCEDURE 1. CHECK ELECTRIC PARKING BRAKE SYSTEM (a) Check the operation of the electric parking brake. NG ...

Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION for Automatic Sound Levelizer (ASL): This circuit is necessary for the Automatic Sound Levelizer (ASL) built into the radio and display receiver assembly. The Automatic Sound Levelizer (ASL) function automatically adjusts the audio system volume level in order to com ...