Toyota RAV4 (XA40) 2013-2018 Service Manual: Tc and cg terminal circuit
Description
Dtc output mode is set by connecting terminals tc and cg of the dlc3.
The dtcs are displayed by blinking the srs warning light.
Hint:
- Make sure that dtc b1281 has not been output. If dtc b1281 has been output, refer to the multiplex communication system.
- When each warning light keeps blinking, a ground short in the wiring of terminal tc of the dlc3 or an internal ground short in each ecu is suspected.
Wiring diagram
Inspection procedure
- Check wire harness (dlc3 - ecm)
- Turn the ignition switch off.
- Disconnect the a9 connectors from the center airbag sensor .
- Measure the resistance of the wire harness side connectors.
Standard resistance 
- Check wire harness (cg of dlc3 - body ground)
- Measure the resistance of the wire harness side connectors.
Standard resistance
- Check wire harness (tc of ecm)
- Measure the resistance of the wire harness side connector.
Standard resistance
- Replace ecm
- Replace the ecm.
- Check the dtc of the ecm (see page es-35).
Result 
Repair or replace wire harness or each ecu
Srs warning light does not come on
Description
The srs warning light is located on the combination meter.
When the srs is normal, the srs warning light comes on for approximately 6
seconds after the ignition
switch is turned fro ...
Other materials:
Dtc check / clear
Check dtc
Connect the intelligent tester (with can vim) to the
dlc3.
Turn the ignition switch on and turn the intelligent
tester on.
Read the dtc by following the prompts on the
tester screen.
Hint:
Refer to the intelligent tester operator's manual for
further details.
...
Dtc check / clear
Notice:
When the diagnosis system is changed from normal
mode to check mode or vice versa, all dtcs and freeze
frame data recorded in normal mode are erased. Before
changing modes, always check and make a note of any
dtcs and freeze frame data.
Hint:
Dtcs which are stored in the ecm can be ...
Front seat cushion heater
Inspection
Inspect front seat cushion heater
assembly lh
Measure the resistance of the seat cushion heater.
Standard resistance
If the result is not as specified, replace the seat
cushion heater assembly.
Heat the thermostat with a light.
Measure the resistance of the sea ...
