Dtc C1436 Yaw Rate Sensor Malfunction

Brake. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Brake Control Dynamic Control Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (YAW RATE SENSOR, YAW RATE SENSOR 2)

CHECK YAW RATE SENSOR ASSEMBLY INSTALLATION

DTC C1436 Yaw Rate Sensor Malfunction


DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the yaw rate sensor assembly via the CAN communication system.
If there is trouble in the bus lines between the yaw rate sensor assembly and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are stored.
DTC C1436 is also stored when calibration is not completed.

DTC Code
DTC Detection Condition
Trouble Area
C1436
Either condition is met:
  1. With the vehicle stationary, the yaw rate and acceleration sensor output value is not 0 deg/s.
  2. An abnormal comparison value.
Yaw rate sensor assembly

INSPECTION PROCEDURE

NOTICE:
After replacing the yaw rate sensor assembly, perform calibration (HILUX_TGN26 RM000000XHR073X.html).
HINT:
When DTC U0123 and/or U0124 is output together with DTC C1436, inspect and repair the trouble areas indicated by DTC U0123 and/or U0124 first (HILUX_TGN26 RM000000YUO0ECX.html).
1.READ VALUE USING INTELLIGENT TESTER (YAW RATE SENSOR, YAW RATE SENSOR 2)

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the intelligent tester on.

  1. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

    ABS/VSC/TRC
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Yaw Rate Sensor
    		Yaw rate sensor / Min.: -128°/s, Max.: 127°/s
    		Vehicle stationary: 0°/s
    Right turn: -128 to 0°/s
    Left turn: 0 to 127°/s
    		-
    Yaw Rate Sensor2
    		Yaw rate sensor 2 / Min.: -128°/s, Max.: 127°/s
    		Vehicle stationary: 0°/s
    Right turn: -128 to 0°/s
    Left turn: 0 to 127°/s
    		-

  1. Check the yaw rate sensor output value displayed on the intelligent tester.

    Result
    Result
    		Proceed to
    NG (Yaw rate sensor output value is 0°/s when vehicle is stationary, but value fluctuates when turning)
    		A
    NG (Yaw rate sensor output value is not 0°/s when vehicle is stationary)
    		B
    OK
    		C

    HINT:
    If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next suspected area (HILUX_TGN26 RM000000XHN0BLX.html).


B
REPLACE YAW RATE SENSOR ASSEMBLY (HILUX_TGN26 RM000000SS5040X.html)

C
USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7002X.html)
A


2.CHECK YAW RATE SENSOR ASSEMBLY INSTALLATION

  1. Turn the ignition switch off.

  1. Check that the yaw rate sensor assembly is installed properly (HILUX_TGN26 RM000000SS204AX.html).

    OK:
    The sensor is tightened to the specified torque.
    The sensor is not installed at an angle.


NG
INSTALL YAW RATE SENSOR ASSEMBLY CORRECTLY (HILUX_TGN26 RM000000SS204AX.html)
OK

REPLACE YAW RATE SENSOR ASSEMBLY (HILUX_TGN26 RM000000SS5040X.html)