Toyota Venza manuals

Toyota Venza: PS Warning Light Remains ON

DESCRIPTION

If the power steering ECU detects a malfunction, the P/S warning light comes on. At this time, the power steering ECU stores a DTC in its memory.

WIRING DIAGRAM

1. w/ Smart Key System


2. w/o Smart Key System


CAUTION / NOTICE / HINT

NOTICE:

If the power steering ECU has been replaced with a new one, perform the rotation angle sensor initialization and torque sensor zero point calibration (See page ).


PROCEDURE

1.

CHECK HARNESS AND CONNECTOR

(a) Turn the ignition switch to ON.

(b) Check the indication condition of the P/S warning light by wiggling the power steering ECU connector and wire harness up and down, and right and left.

OK:

P/S warning light indication condition does not change.


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

2.

CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs (See page ).


OK:

DTC is not output.


NG

GO TO CAN COMMUNICATION SYSTEM


OK

3.

READ VALUE USING TECHSTREAM (IG POWER SUPPLY)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

(f) Select the items "IG Power Supply" in the Data List and read the value displayed on the Techstream.

EMPS

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

IG Power Supply

ECU power source voltage/

Min.: 0 V

Max.: 20.1531 V

11 to 14 V

Ignition switch ON

OK:

Normal condition value is displayed the Techstream.

Result

Result

Proceed to

OK

A

NG (for 2GR-FE)

B

NG (for 1AR-FE)

C


B

INSPECT CHARGING SYSTEM


C

INSPECT CHARGING SYSTEM


A

4.

CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND)

(a) Disconnect the connectors from the power steering ECU.


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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D20-6 (IG) - Body ground

Ignition switch ON

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D19-2 (PGND) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Power Steering ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

5.

REPLACE POWER STEERING ECU

(a) Replace the power steering ECU (See page ).


(b) Check the P/S warning light condition.

OK:

P/S warning light remains on when the ignition switch is ON and goes off after engine start.


OK

END


NG

GO TO METER / GAUGE SYSTEM

Torque Sensor Zero Point Adjustment Undone (C1515,C1525)
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