Toyota RAV4 (XA40) 2013-2018 Service Manual: Tire pressure warning light circuit
Description
If the tire pressure warning ecu detects trouble, the tire pressure warning light turns on and tire pressure monitor is canceled at the same time. At this time, the ecu records a dtc in memory.
Connect terminals tc and cg of the dlc3 to make the tire pressure warning light blink and output the dtc.
Wiring diagram
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure monitor valve and/or the tire pressure warning ecu (see page tw-9).
- Inspect fuse (gauge)
- Remove the gauge fuse from the instrument panel junction block.
- Measure the resistance of the fuse.
Standard resistance:
below 1 
- Check tire pressure warning light circuit
- Disconnect the e56 ecu connector.
- Using a service wire, connect e56-6 (ind) on the wire harness side and body ground.
- Turn the ignition switch on.
- Check that the tire pressure warning light turns on.
Ok: tire pressure warning light turns on.
- Check wire harness (ecu - meter)
- Disconnect the e56 ecu connector.
- Disconnect the e19 meter connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance 
Proceed to next circuit inspection shown in problem symptoms table
Vehicle speed signal error (test mode dtc)
Description
The tire pressure warning ecu receives a speed signal from the combination
meter. This dtc is stored
upon entering test mode, and cleared when a vehicle speed signal of 12 mph (20 ...
Ecu power source circuit
Description
This is the power source for the tire pressure warning ecu.
Wiring diagram
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure
...
Other materials:
Vehicle speed sensor
Description
Refer to the sfi system (see page es-224).
Wiring diagram
Refer to the sfi system (see page es-224).
Inspection procedure
Refer to the sfi system (see page es-224). ...
Reassembly
Install piston
Using a small screwdriver, install a new snap ring
onto one end of the piston pin hole.
Hint:
Make sure that the end gap of the snap ring is not
aligned with the pin hole cutout portion of the piston.
Gradually heat the piston up to 80 to 90°c (176 to
194°f ...
Input speed sensor circuit no signal
Description
This sensor detects the rotation speed of the turbine, which shows the input
revolution of the transaxle. By
comparing the input speed signal (nt) with the counter gear speed sensor signal
(nc), the ecm detects
the shift timing of the gears and controls the engine torque and ...
