Toyota RAV4 manuals

Toyota Sienna Service Manual: 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 signals such as A/T signals, cruise control operation signals, low speed operation signals, brake control operation signals, and laser light emission prohibiting signals, to the distance control ECU. The ECM is the only component that has a function to record and output the DTCs in the dynamic laser cruise control system. Therefore, if the distance control ECU detects a communication error from the ECM, it sends a malfunction signal back to the ECM.

DTC No.

DTC Detection Condition

Trouble Area

P1616

While the dynamic laser cruise control is either preparing for operation or operating, if the ECM continuously receives a logical error signal from the distance control ECU for more than a specific amount of time, the ECM records this logical error code
  • Communication circuit
  •  ECM
  •  Distance control ECU

U0100

While the dynamic laser cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the distance control ECU for more than a specific amount of time, the ECM records this communication cut off code
  • Communication circuit
  •  ECM
  •  Distance control ECU

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

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 f ...

Distance Control ECU Malfunction
DTC P1617 Distance Control ECU Malfunction DESCRIPTION In the dynamic laser cruise control system, the ECM and the distance control ECU communicate with one another to control the system based on ...

Other materials:

Installation
1. INSTALL 3 POINT TYPE NO. 2 REAR SEAT BELT ASSEMBLY  Check the degree of tilt when the belt begins to lock the ELR. Check that the belt does not lock within 15 of tilt in all directions but that the belt locks with over 45 of tilt, when gently moving the retractor. If ...

Removal
1. REMOVE FRONT DOOR LOWER FRAME BRACKET GARNISH 2. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG 3. REMOVE FRONT DOOR ARMREST BASE PANEL ASSEMBLY 4. REMOVE BACK FRAME PLATE 5. REMOVE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 6. REMOVE FRONT DOOR TRIM BOARD SUBASSEMBLY 7. REMOVE OUTER RE ...

Diagnosis system
1. BUS CHECK Select "BUS CHECK" from the "OBD/MOBD MENU" screen. HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester via the CAN VIM. Press "ENTER" on the intelligent te ...

В© 2011-2021 Copyright www.tsienna.net