Toyota Venza: Fail-safe Chart
FAIL-SAFE CHART
If a problem occurs in the power steering system, the power steering assist will
be stopped or the amount of power assist will be decreased to protect the system.
Power Steering System
Malfunction
|
Fail-safe Operation
|
- Torque sensor (steering column assembly) malfunction
- Power steering motor (steering column assembly) malfunction
- Power steering ECU assembly malfunction
|
Power steering assist stops or assist amount is limited
|
- Vehicle speed signal malfunction
- Skid control ECU (brake actuator assembly) malfunction
- History of power steering ECU assembly overheating
- History of decrease in battery voltage (not malfunction)
|
Power steering assist is temporarily limited
|
HINT:
- The amount of power assist may be decreased to prevent the motor and
ECUs from overheating if the steering wheel is continuously turned when
the vehicle is either stopped or being driven at a low speed, or if the
steering wheel is kept at either full lock position for a long time. In
such cases, the amount of power assist returns to normal when the steering
wheel is not turned for approximately 10 minutes with the engine idling.
- If the battery is not sufficiently charged or the voltage decreases
temporarily, the amount of power assist will be reduced and the EPS warning
light will come on. In such cases, the amount of power assist returns to
normal when the battery voltage recovers.
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 p ...
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas
listed for that code. For details of the code, refer to the "See page" ...
Other materials about Toyota Venza:
Operation Check
OPERATION CHECK
1. CHECK BASIC FUNCTIONS
(a) When the back door is partially closed, check that the motor operates to
fully close (lock) the back door.
(b) Check that the back door can be opened.
(c) When the back door is partially closed and then the mo ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure listed to troubleshoot the Active Torque
Control 4WD system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
...
Brake Switch "A" Circuit (P0571)
DESCRIPTION
When the brake pedal is depressed, the stop light switch assembly sends a signal
to the ECM. When the ECM receives this signal, it cancels the cruise control. The
fail-safe function operates to enable normal driving even if there is a malfunct ...