Toyota Yaris: Vehicle Stability Control System / Steering Angle Sensor Supply Voltage Circuit Circuit Short to Ground or Open (C14FE14)

DESCRIPTION

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

WIRING DIAGRAM

Refer to DTC C05262A.

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CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

(a) Clear the DTCs.

(b) Turn the ignition switch off.

NEXT

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

(b) Check if the same DTC is output.

A

USE SIMULATION METHOD TO CHECK

B

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

OK:

The connector is securely connected.

(b) Disconnect the H39 steering sensor connector.

*a Front view of wire harness connector (to Steering Sensor)

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

OK:

No deformation or corrosion.

(d) Turn the ignition switch to ON.

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

Standard Voltage:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Turn the ignition switch off.

*a Front view of wire harness connector (to Steering Sensor)

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

Standard Voltage:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

Standard Resistance:

OK

REPLACE STEERING SENSOR

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR