Toyota Yaris: Vehicle Stability Control System / Multi-axis Acceleration Sensor Module "A" Supply Voltage Circuit Voltage Out of Range (C14D71C)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Multi-axis Acceleration Sensor Module "A" Supply Voltage Circuit Voltage Out of Range (C14D71C)

DESCRIPTION

The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.

This DTC is stored when the skid control ECU (brake actuator assembly) receives a sensor supply voltage malfunction signal from the acceleration sensor (airbag sensor assembly).

This DTC may be stored due to an intermittent low power source voltage.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C14D71C

Multi-axis Acceleration Sensor Module "A" Supply Voltage Circuit Voltage Out of Range

When the +BS terminal voltage is from 9.5 to 17.4 V at a vehicle speed exceeding 3 km/h (2 mph), an acceleration sensor power source malfunction signal is received for 10 seconds or more.

  • Wire harness and connector
  • Acceleration sensor (airbag sensor assembly)

Brake

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • If the yaw rate and acceleration sensor (airbag sensor assembly) was replaced or reinstalled, perform "Calibration".

    Click here

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (IGR TERMINAL)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.

(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

OK:

The connector is securely connected.

(c) Disconnect the H14 yaw rate and acceleration sensor (airbag sensor assembly) connector.

*a

Front view of wire harness connector

(to Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly))

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Connect the cable to the negative (-) auxiliary battery terminal.

(f) Turn the ignition switch to ON.

(g) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

H14-36 (IGR) - Body ground

Ignition switch ON

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (E1 AND E2 TERMINAL)

(a) Turn the ignition switch off.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

H14-33 (E1) - Body ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

Below 1 Ω

H14-32 (E2) - Body ground

1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CLEAR DTC

(a) Reconnect the H14 yaw rate and acceleration sensor (airbag sensor assembly) connector.

(b) Operate the GTS to clear the codes.

Chassis > Brake > Clear DTCs

(c) Press the DTC clear button.

(d) Turn the ignition switch off.

NEXT

4.

RECONFIRM DTC

(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.

(b) Operate the GTS to read the DTCs.

Chassis > Brake > Trouble Codes

(c) Check if the same DTC is output.

Result

Proceed to

C14D71C is not output

A

C14D71C is output

B

A

USE SIMULATION METHOD TO CHECK

B

REPLACE AIRBAG SENSOR ASSEMBLY

    ABS Solenoid Control Module Actuator Stuck On (C143A7E,C143A7F)

    DESCRIPTION The ABS solenoid relay is built into the skid control ECU in the brake actuator assembly. The ABS solenoid relay supplies power to the holding solenoid and reduction solenoid...

    Left Front Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open (C14E014,C14E314)

    DESCRIPTION Refer to DTC C05001F. Click here DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from C14E014 Left Front Wheel Speed Sensor Supply Voltage Circuit Short to Ground or Open With the +BS terminal voltage 9...

    Other information:

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Removal


    REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. REMOVE REAR WHEEL Click here 2. REMOVE REAR AXLE SHAFT NUT (a) Using SST and a hammer, release the staked part of the rear axle shaft nut...

    Toyota Yaris XP210 (2020-2022) Reapir and Service Manual: Back Door Lock


    ComponentsCOMPONENTS ILLUSTRATION *1 BACK DOOR TRIM BOARD *2 BACK DOOR LOCK ASSEMBLY W/COURTESY LIGHT SWITCH N*m (kgf*cm, ft.*lbf): Specified torque MP grease RemovalREMOVAL PROCEDURE 1. REMOVE BACK DOOR TRIM BOARD Click here 2...

    Categories

    Supplemental Restraint System (SRS) Precautions

    The front and side supplemental restraint systems (SRS) include different types of air bags. Please verify the different types of air bags which are equipped on your vehicle by locating the “SRS AIRBAG” location indicators. These indicators are visible in the area where the air bags are installed.

    The air bags are installed in the following locations:

    The steering wheel hub (driver air bag) The front passenger dashboard (front passenger air bag) The outboard sides of the front seatbacks (side air bags) The front and rear window pillars, and the roof edge along both sides (curtain air bags)

    read more

     
    Copyright © 2022 www.toyaris4.com