Open in One Side of CAN Sub Bus Line (TO 12/2010): Procedure
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK CAN BUS WIRE
- Disconnect the connector with terminals CANH and CANL of the ECU.
- Select "CAN Bus Check" on the Techstream.
HINT:
- This step should be repeated for each ECU (sensor) until only one (the disconnected ECU (sensor)) is missing from the CAN bus check.
- It can then be determined that this ECU has an open circuit in one of its CANH or CANL wires.
Standard
A B Only disconnected ECU is not displayed on the Techstream. Several ECUs and sensors are not displayed on the Techstream.
B → RECONNECT CONNECTOR. REPEAT THIS INSPECTION FOR OTHER ECUS (SENSORS) UNTIL ONLY ONE IS NOT DISPLAYED
A: Go to next step
- CHECK CAN BUS WIRE
- Measure the resistance according to the value(s) in the table below.
Standard resistance
ECUs (sensors) Specified Condition ECM 108 to 132 Ω Skid control ECU 108 to 132 Ω Other ECUs (sensors) 54 to 69 Ω HINT:
- This is an example inspection.
- Perform this inspection for the ECU that was not displayed in the previous inspection.
NG → REPAIR OR REPLACE ECU BUS LINE OR CONNECTOR
OK → REPLACE ECU
- Measure the resistance according to the value(s) in the table below.