Toyota Venza: Assist Map Number Un-Writing (C1581)
DESCRIPTION
The power steering ECU stores this DTC when it determines that the assist map is not written in the ECU.
HINT:
The assist map is data written in the power steering ECU to control the degree of assistance. The assist map is selected based on the vehicle's specified communication data.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1581 |
Assist map not written in power steering ECU |
|
PROCEDURE
|
1. |
INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT |
(a) Initialize the rotation angle sensor value and calibrate the torque sensor
zero point (See page .gif)
).
HINT:
The assist map is automatically written during the rotation angle sensor initialization and torque sensor zero point calibration.
|
.gif)
|
2. |
CHECK FOR DTC |
(a) Check for DTCs (See page ).
OK:
DTC C1581 is not output.
HINT:
DTC C1581 will be cleared after the assist map is written.
| OK | .gif) |
END |
|
|
3. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Using the Techstream, check for DTCs and confirm that there are no problems
in the CAN communication system (See page ).
OK:
DTC is not output.
| NG | |
GO TO CAN COMMUNICATION SYSTEM |
|
|
4. |
CHECK ECM |
(a) Check if an ECM that complies with the vehicle specifications is installed.
OK:
ECM that complies with vehicle specifications is installed.
Result|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (for 2GR-FE) |
B |
|
NG (for 1AR-FE) |
C |
| B | |
REPLACE ECM |
| C | |
REPLACE ECM |
|
|
5. |
CHECK BRAKE ACTUATOR ASSEMBLY |
(a) Check if a brake actuator assembly (skid control ECU) that complies with the vehicle specifications is installed.
OK:
Brake actuator assembly (skid control ECU) that complies with vehicle specifications is installed.
| OK | |
REPLACE POWER STEERING ECU |
| NG | |
REPLACE BRAKE ACTUATOR ASSEMBLY |
PIG Power Supply Voltage Malfunction (C1552)
DESCRIPTION
When a problem occurs in the power steering system, the power source relay circuit
is shut off to stop the power assist.
DTC No.
DTC Detection Condition
...
IG Power Supply Voltage Malfunction (C1551)
DESCRIPTION
The power steering ECU distinguishes the ignition switch status as ON or off
through the IG power source circuit.
DTC No.
DTC Detection Condition
Troub ...
Other materials about Toyota Venza:
Inspection
INSPECTION
PROCEDURE
1. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH)
(a) Check the switch function.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Co ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The back door closer system troubleshooting procedure is based on the
premise that the power back door system is operating normally. Check the
power back door system first before troubleshooting the back door clo ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The wireless door lock control system troubleshooting procedures are
based on the premise that the power door lock control system is operating
normally. Check the power door lock control system first before troub ...
0.152