Dtc P1631/65 Communication Error From Ecm To Skid Control Ecu

Cruise Control System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Cruise Control. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

INSPECTION PROCEDURE

DTC P1631/65 Communication Error from ECM to Skid Control ECU

DTC U0100/78 Communication Stop from ECM to Distance Control ECU, VSC


DESCRIPTION

Therefore, if the skid 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
P1631/65
While the cruise control is either preparing for operation or operating, if the ECM continuously receives a logical error signal from the skid control ECU for a certain amount of time, the ECM records this logical error code
  1. Communication circuit
  2. ECM
  3. Skid control ECU
U0100/78
While the cruise control is either preparing for operation or operating, if the ECM continuously receives a communication cut off signal from the skid control ECU for a certain amount of time, the ECM records this communication cut off code
  1. Communication circuit
  2. ECM
  3. Skid 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 (RAV4_ACA30 RM000001RSO01MX.html).