Toyota RAV4 manuals

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
  • Communication circuit
  •  Distance control ECU
  •  ECM

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
  • Communication circuit
  •  Distance control ECU
  •  ECM

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:

Reassembly
1. INSTALL BRAKE MASTER LESS RESERVOIR TANK CYLINDER SUB-ASSEMBLY (a) Apply lithium soap base glycol grease to the 2 brake master cylinder union grommets and install them to the brake master less reservoir tank cylinder subassembly. (b) Using a pin punch (φ 5 mm) and hammer, install the ...

Adjustment
HINT: On the RH side, use the same procedures as on the LH side. Since a centering bolt is used as door hinge mounting bolts on the body side and the door side, the door cannot be adjusted with them on. Substitute a bolt with a washer for the centering bolt. 1. INSPECT BACK DOOR PAN ...

CD Abnormal/ Excess Current/ Tray Insertion / Ejection Error
DTC 63-44 CD Abnormal DTC 63-48 Excess Current DTC 63-50 Tray Insertion / Ejection Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 63-44 Operation error in the CD mechanism Radio and navigation assembly 63-48 Excess current is pr ...

© 2011-2025 Copyright www.tsienna.net