Power Steering ECU Communication Circuit

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: Power Steering ECU Communication Circuit
- Power Steering ECU Communication Circuit

DESCRIPTION

The power steering ECU obtains the steering angle signal, the steering zero point memory, the vehicle speed signal, and the engine speed signal through the CAN communication system, and controls the output current to the power steering solenoid valve based on these signals.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if the CAN communication system DTC is output Diagnosis System.

Result





B -- GO TO CAN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.

2. CHECK VEHICLE STABILITY CONTROL SYSTEM

(a) Check if the vehicle stability control system DTC is output Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO VEHICLE STABILITY CONTROL SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

3. CHECK SFI SYSTEM

(a) Check if the SFI system DTC is output

DTC Check / Clear for 3UR-FE)

DTC Check / Clear for 3UR-FBE)

DTC Check / Clear for 1UR-FE).

Result





D -- GO TO SFI SYSTEM How to Proceed with Troubleshooting

C -- GO TO SFI SYSTEM How to Proceed with Troubleshooting

B -- GO TO SFI SYSTEM How to Proceed with Troubleshooting

A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Power Steering System