CAN Communication System

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: U0126: Lost Communication with Steering Angle Sensor Module
U0126 - Lost Communication with Steering Angle Sensor Module

DESCRIPTION

If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open. (One side of the CANH [branch wire] /CANL [branch wire] of the ECU and/or sensor is open.)

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch ON (IG).

(c) Clear the DTC.

(d) Check for DTC.

HINT
When DTCs other than U0126 are output, inspect and repair the trouble areas indicated by those DTCs first.

Result

B -- GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM
A -- Continue to next step.

2. CHECK CAN BUS LINE FOR DISCONNECTION (STEERING ANGLE SENSOR BRANCH WIRE)

(a) Disconnect the K19 steering angle sensor connector.

(b) Measure the resistance of the wire harness side connector.

Standard resistance:

NG -- REPAIR OR REPLACE STEERING ANGLE SENSOR BRANCH WIRE OR CONNECTOR (CANH, CANL)
OK -- Continue to next step.

3. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND)

(a) Disconnect the K19 steering angle sensor connector.

(b) Measure the resistance of the wire harness side connector.

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE STEERING ANGLE SENSOR