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:
Gauges and meters (with 12.3-inch multi-information display)
The meters display various drive information.
Meter display
â– Locations of gauges and meters
The meter type can be changed on
of the multi-information display.
Type 1/Type 2
The units of measure may differ depending on the intended destination of
the vehicle.
Multi-information display
Presen ...
Random / multiple cylinder misfire detected
Description
When the engine misfires, high concentrations of hydrocarbons (hc) enter the
exhaust gas. Extremely
high hc concentration levels can cause increases in exhaust emission levels.
High concentrations of hc
can also cause increases in the three-way catalytic converter (twc) te ...
Occupant classification ecu
Components
On-vehicle inspection
Inspect occupant classification ecu
(vehicle not involved in collision)
Perform a diagnostic system check (see page rs-
236).
Inspect occupant classification ecu
(vehicle involved in collision)
Perform a diagnostic system check (see p ...
