Toyota RAV4 (XA40) 2013-2018 Service Manual: Open in can main wire
Description
There may be an open circuit in the can main wire and / or the dlc3 branch wire when the resistance between terminals 6 (canh) and 14 (canl) of the dlc3 is 69 ù or more.
Wiring diagram
Inspection procedure
Notice:
- Turn the ignition switch off before measuring the resistances of the main wire and the branch wire.
- After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
- Before measuring the resistance, leave the vehicle for at least 1 minute and do not operate the ignition switch, any switches or doors. If doors need to be opened in order to check connectors, open the doors and leave them open.
Hint:
Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.
- Check dlc3
- Measure the resistance of the dlc3.
Standard resistance 
Notice:
When the measured value is 132 ù or more and a can communication system diagnostic trouble code is output, there may be a fault besides disconnection of the dlc3 branch wire. For that reason, troubleshooting should be performed again from "how to proceed with troubleshooting" (see page ca-8) after repairing the trouble area.
- Check can main wire for disconnection (no. 2 Junction connector - ecm)
- Disconnect the e68 no. 2 Junction connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Check can main wire for disconnection (no. 2 Junction connector - combination meter ecu)
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace no. 2 Junction connector
- Connect connector
- Reconnect the e68 no. 2 Junction connector.
- Check can main wire for disconnection (no. 1 Junction connector - ecm)
- Disconnect the a36 no. 1 Junction connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Check can main wire for disconnection (no. 1 Junction connector - no. 2 Junction connector)
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace no. 1 Junction connector
- Connect connector
- Reconnect the a36 no. 1 Junction connector.
- Check can main wire for disconnection (ecm - no. 1 Junction connector)
- Disconnect the a9 ecm connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace ecm
- Connect connector
- Reconnect the e68 no. 2 Junction connector.
- Check can main wire for disconnection (no. 4 Junction connector - no. 2 Junction connector)
- Disconnect the e69 no. 4 Junction connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Check can main wire for disconnection (no. 4 Junction connector - combination meter)
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace no. 4 Junction connector
- Connect connector
- Reconnect the e69 no. 4 Junction connector.
- Check can main bus line for disconnection (combination meter ecu - no. 4 Junction connector)
- Disconnect the e19 combination meter ecu connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace combination meter assembly (combination meter ecu)
- Connect connector
- Reconnect the e69 no. 4 Junction connector.
- Check can main wire for disconnection (no. 2 Junction connector - no. 3 Junction connector)
- Disconnect the e70 no. 3 Junction connector.
- Measure the resistance of the wire harness side connector.
Standard resistance 
- Check can main wire for disconnection (no. 3 Junction connector - no. 4 Junction connector)
- Measure the resistance of the wire harness side connector.
Standard resistance 
Replace no. 3 Junction connector
Can bus line
Description
When any dtc for the can communication system is output, first measure the
resistance between the
terminals of the dlc3 to specify the trouble area, and check that there is not a
sho ...
Short in can bus lines
Description
There may be a short circuit between the can bus lines when the resistance
between terminals 6 (canh)
and 14 (canl) of the dlc3 is below 54
.
Wiring diagram
Inspection ...
Other materials:
Internal control module random access memory (ram) error
Description
The ecm continuously monitors its own internal memory status, internal
circuits, and output signals
transmitted to the throttle actuator. This self-check ensures that the ecm is
functioning properly. If any
malfunction is detected, the ecm sets the appropriate dtc and illumina ...
Fail-safe chart
If a problem occurs in the electric power steering system, the
p/s warning light will come on in the combination meter and
steering power assist will be stopped, fixed at a particular
point, or decreased simultaneously to protect the system.
Hint:
The amount of power assist may be decreased ...
Shift lock system
Parts location
System diagram
On-vehicle inspection
Check shift lock operation
Move the shift lever to p.
Turn the ignition switch off.
Check that the shift lever cannot be moved to any
position other than p.
Turn the ignition switch on, depress the brake
pedal and chec ...
