RX 350 FWD V6-3.5L (2GR-FE) (2010)
ECUs (sensors) and the Techstream may be affected by the incomplete signals that are output from the ECU that has an open circuit in either
of its CAN branch wires. In this case, the CAN branch wires for the ECUs and sensors that repeatedly appear and disappear from the screen
are normal and the ECU that is not displayed on the screen may be the main cause of the problem (this ECU may have an open circuit in either
of its CAN branch wires).
INSPECTION PROCEDURE
HINT
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to
vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine
the cause of the malfunction.
PROCEDURE
1. CHECK FOR OPEN IN ONE SIDE OF CAN NO. 1 BUS BRANCH WIRE
(a) Confirm the systems (ECUs and sensors), which use CAN communication, equipped on the vehicle See: Initial Inspection and Diagnostic
Overview/CAN Communication System/Diagnosis System.
(b) Using the Techstream, select and perform "CAN Bus Check" See: Initial Inspection and Diagnostic Overview/CAN Communication
System/Diagnosis System.
(c) Observe the screen for approximately 1 minute to check the ECUs and sensors that are not displayed on the screen and also those that
repeatedly appear and disappear from the screen.
(d) Check that the ECUs and sensors, which are connected to the ECUs or sensors that are not displayed on the screen.
(e) Check that the ECUs and sensors, which repeatedly appeared and disappeared from the "CAN Bus Check" screen, are constantly
displayed.
NEXT -- GO TO CORRESPONDING COMMUNICATION STOP MODE See: CAN Communication System/Problem Symptoms
Table