DESCRIPTIONThe skid control ECU is connected to the combination meter via CAN communication. If any of the following is detected, the brake warning light remains on:
WIRING DIAGRAMCAUTION / NOTICE / HINTNOTICE: When replacing the brake actuator assembly, perform zero point calibration and store system information (See page ). PROCEDURE
(a) Check if a CAN communication system DTC is output (See page ). Result
(a) Check if the skid control ECU connector is securely connected. OK: The connector is securely connected.
(a) Check the battery voltage. Standard voltage: 11 to 14 V
(b) Turn the ignition switch to ON. (c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
Text in Illustration
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
Text in Illustration
(a) Reconnect the skid control ECU connector. (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 / ABS/VSC/ TRAC / Data List. (f) Select the Data List on the Techstream (See page ). ABS/VSC/TRAC
(g) Using the Techstream, check the switch condition on the Techstream changes according to parking brake pedal operation. OK: The Techstream displays ON or OFF according to parking brake pedal operation.
(b) Remove the reservoir filler cap and strainer. (c) Disconnect the brake fluid level warning switch connector. (d) Measure the resistance according to the value(s) in the table below. HINT: A float is located inside the reservoir. Its position can be changed by increasing or decreasing the level of brake fluid. Standard Resistance:
HINT: If there is no problem after finishing the above check, adjust the brake fluid level to the MAX level. Text in Illustration
(a) Disconnect the combination meter connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Reconnect the skid control ECU connector. (b) Connect the Techstream to the DLC3. (c) Turn the ignition switch to ON. (d) Turn the Techstream on. (e) Enter the following menus: Body Electrical / Combination Meter / Active Test. (f) Select the Active Test on the Techstream. Combination Meter
(g) Check that the brake warning light on the combination meter turns on or off in accordance with the Techstream operation. OK: The brake warning light turns on or off in accordance with the Techstream operation. HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See page ).
(b) Disconnect the parking brake switch connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
Text in Illustration
(a) Disconnect the instrument panel junction block assembly connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Remove the main body ECU from the instrument panel junction block assembly. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See page ).
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