Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the power steering system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Confirm problem symptoms (See page ).

3.	INSPECT BATTERY VOLTAGE

(a) Measure the voltage of the battery.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

(b) Using the Techstream, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List (See page
).

4.	CHECK DTC AND FREEZE FRAME DATA*

(a) Record DTCs and freeze frame data.

5.	CLEAR DTC AND FREEZE FRAME DATA*

(a) Clear the DTCs and freeze frame data.

6.	PROBLEM SYMPTOM CONFIRMATION

Result	Proceed to
Symptom does not occur.	A
Symptom occurs.	B

GO TO STEP 8

7.	SYMPTOM SIMULATION

8.	CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTCs (See page ).

Result	Proceed to
CAN system DTC is not output.	A
CAN system DTC is output.	B

HINT:

If any DTCs of the CAN communication system are output, perform troubleshooting on the CAN communication system first.
If communication to the power steering ECU cannot be established through the Techstream, inspect terminals CANH and CANL of the DLC3 and the power steering ECU, and the IG circuit of the power steering ECU.

PROCEED TO CAN COMMUNICATION SYSTEM

9.	CHECK FOR DTC*

(a) Check for DTCs (See page ).

HINT:

Refer to Diagnostic Trouble Code Chart when any DTCs are output (See page ).

Result	Proceed to
DTCs are not output.	A
DTCs are output.	B

GO TO STEP 11

10.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page ).

11.	CIRCUIT INSPECTION

12.	IDENTIFICATION OF PROBLEM

13.	REPAIR OR REPLACE

14.	CONFIRMATION TEST

END

System Diagram

SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method ECM Power Steering ECU ...

System Description

SYSTEM DESCRIPTION 1. DESCRIPTION The power steering system generates torque through the operation of the motor and the reduction gear installed on the column shaft in order to assist ...

Other materials about Toyota Venza:

Fail-safe Chart
FAIL-SAFE CHART 1. FAIL-SAFE FUNCTION If the following malfunctions occur, the AWD control ECU will stop the function of 4WD control system or partly change the function to control the system. If a malfunction occurs in the senso ...

Console boxes
► Front Press the tab and slide to open. ► Rear 1. Pull up the lever to release the lock. 2. Slide the armrest fully rearward. 3. Lift the armrest to open. - When using the rear console box lid as an armrest If necessary, the con ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART If a trouble code is displayed during the DTC check, check the trouble areas listed for that code in the table below and proceed to the appropriate page. Cruise Control System DTC Code Detection Item ...