Toyota 4Runner: Acceleration Sensor Internal Circuit (C1419,C1435)

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Acceleration Sensor Internal Circuit (C1419,C1435)

DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.

The yaw rate and acceleration sensor has a built-in acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).

If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (malfunction in CAN communication with the yaw rate and acceleration sensor) and U0124 (malfunction in CAN communication with the acceleration sensor) are stored.

These DTCs are also stored when calibration has not been completed.

DTC Code	DTC Detection Condition	Trouble Area
C1419	A data malfunction signal is received from the acceleration sensor.	Yaw rate and acceleration sensor
C1435	A data malfunction signal is received from the yaw rate and acceleration sensor.	Yaw rate and acceleration sensor

WIRING DIAGRAM

Refer to DTCs C1232, C1243, C1245 and C1381 (See page ).

CAUTION / NOTICE / HINT

NOTICE:

When replacing the yaw rate and acceleration sensor, perform calibration (See page ).

PROCEDURE

1.	CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs (See page ).

Result

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

2.	REPLACE YAW RATE AND ACCELERATION SENSOR

(a) Replace the yaw rate and acceleration sensor (See page ).

END

High Power Supply Voltage Malfunction (C1417)

DESCRIPTION If a malfunction is detected in the power supply circuit, the skid control ECU (housed in the master cylinder solenoid) stores this DTC and the fail-safe function prohibits ABS/VSC/TR ...

Acceleration Sensor Malfunction (C1420)

DESCRIPTION Refer to DTCs C1419 and C1435 (See page ). DTC Code DTC Detection Condition Trouble Area C1420 After the difference between ...

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