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:
Daytime running light relay
On-vehicle inspection
Inspect day time running light relay
Remove the no. 2 Relay, no. 3 Relay and no. 4 Relay
from the engine room no. 2 Relay block.
Measure the resistance of the relays.
Standard resistance:
No. 2, No. 4
No. 3
If the result is not as specified, replace th ...
Second brake piston
Components
Disassembly
Remove 2nd brake piston return spring sub-assembly
Place sst on the return spring and compress.
Using a screwdriver, pry out the snap ring.
Remove the piston return spring.
Inspect 2nd brake piston return spring sub-assembly (see page ax-223)
...
Steering wheel audio switches
Some audio features can be controlled using the switches on
the steering wheel.
Operation may differ depending on the type of audio system or
navigation system. For details, refer to the manual provided with
the audio system or navigation system.
Operating the audio system using the steering ...
