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
.gif)
).
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 | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check for DTCs (See page ).
OK:
DTC is not output.
| NG | |
GO TO CAN COMMUNICATION SYSTEM |
|
|
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 |
|
|
4. |
CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND) |
|
(a) Disconnect the connectors from the power steering ECU. |
|
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(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 |
|
*1 |
Front view of wire harness connector (to Power Steering ECU) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
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)
DESCRIPTION
These DTCs do not indicate a malfunction. The power steering ECU stores these
DTCs when it determines that the rotation angle sensor value initialization and
torque sensor zero point ...
Steering Column
...
Other materials about Toyota Venza:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR SPEAKER ASSEMBLY
(a) With the speaker installed, check that there is no looseness or other abnormalities.
(b) Check that there is no foreign matter in the speaker, no tears on the speaker
cone or other abnormalities.
...
Push Switch / Key Unlock Warning Switch Malfunction (B2780)
DESCRIPTION
This DTC is stored if the transponder key ECU assembly does not detect that the
unlock warning switch assembly is ON even when the ignition switch is ON. Under
normal conditions, the unlock warning switch assembly is ON when the ignition switc ...
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