Toyota Sienna Service Manual: Communication Error from Distance Control ECU to ECM
DTC P1615 Communication Error from Distance Control ECU to ECM
DTC U1101 Lost Communication with Distance Control ECU
DESCRIPTION
The distance control ECU receives information about the area in front of the vehicle from the laser sensor and then sends a brake control demand signal (deceleration demand) and diagnosis signals, such as laser sensor grime signals or laser sensor malfunction signals, to the ECM.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
P1615 |
While the dynamic laser cruise control is either preparing for operation or operating, if communication data from the distance control ECU is logically inconsistent for a certain amount of time, the ECM records this logical error code |
|
|
U1101 |
While the dynamic laser cruise control is either preparing for operation or operating, if communication data from the distance control ECU is invalid for a certain amount of time, the ECM records this communication cut off code |
|
INSPECTION PROCEDURE
HINT: This circuit uses CAN communication. Therefore, if there are any malfunctions in the communication circuit, one or more DTCs in the CAN communication system are output.
1 CHECK CAN COMMUNICATION SYSTEM
Refer to HOW TO PROCEED WITH TROUBLESHOOTING
END
Brake System Malfunction
DTC P1578 Brake System Malfunction
DESCRIPTION
This DTC is output when the VSC system has a problem. Check the VSC system
when this DTC is
output
DTC No.
DTC Detection Conditio ...
Communication Error from ECM to Distance
Control ECU
DTC P1616 Communication Error from ECM to Distance
Control ECU
DTC U0100 Lost Communication with ECM/PCM "A"
DESCRIPTION
The ECM receives signals from each sensor and ECU, then sends sig ...
Other materials:
Check mode procedure
HINT:
Intelligent tester only:
Compared to normal mode, check mode is more sensitive to
malfunctions. Therefore, check mode can detect the
malfunctions that cannot be detected by normal mode.
NOTICE:
All the stored DTCs and freeze frame data are erased if:
the ECM is changed from nor ...
Installation
1. INSTALL CRANKSHAFT POSITION SENSOR
Apply a light coat of engine oil to the O-ring on the
crankshaft position sensor.
Install the crankshaft position sensor with the bolt.
Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf)
Connect the crankshaft position sensor connector.
...
High Temperature
DTC 44-47 High Temperature
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
44-47
Sensor detects that DVD unit temperature is high (Over
80C).
Television display assembly
INSPECTION PROCEDURE
HINT:
After the inspection is completed, cl ...
