Toyota RAV4 (XA40) 2013-2018 Service Manual: Control module communication bus off
Description
The power steering ecu receives signals from the ecm and the skid control ecu
via the can
communication system.
Hint:
- When 2 or more dtcs starting with [u] are output simultaneously, inspect the connectors and wire harness of each ecu.
- If dtc u0105/41 is output, first erase the dtcs. Then turn the ignition switch from off to on. If dtc u0105/41 is not output again, there is no malfunction.
Wiring diagram
Inspection procedure
- Reconfirm dtc
- Check for dtc.
Ok: dtc is not output.
Go to can communication system
Assist map number un-writing
Description
The power steering ecu outputs this dtc when it determines that the assist
map is not written in the
ecu.
Hint:
The assist map data is written in the power steering ecu to contro ...
Eps warning light circuit
Description
If the power steering ecu detects a malfunction, the p/s warning light comes
on. At this time, the power
steering ecu stores a dtc in its memory.
Wiring diagram
Inspection proced ...
Other materials:
Dtc check / clear
Check dtc (when using intelligent tester)
Connect the intelligent tester (with can vim) to the
dlc3.
Turn the ignition switch on.
Turn the tester on.
Read the dtcs by following the prompts on the
tester screen.
Hint:
Refer to the intelligent tester operator's manual for
furth ...
Room light assembly
Components
Removal
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove room light lens
Using a screwdriver ...
Fuel pump control circuit
Description
When the engine is cranked, the starter relay drive signal output from the
star terminal of the ecm is
input into the sta terminal of the ecm, and ne signal generated by the
crankshaft position sensor is also
input into the ne+ terminal. Thus, the ecm interprets that the engine is ...
