Toyota RAV4 (XA40) 2013-2018 Service Manual: Circuit inspection

Toyota RAV4 (XA40) 2013-2018 Service Manual / Introduction / How to troubleshoot ecu controlled systems / How to proceed with troubleshooting / Circuit inspection

A description of the main areas of each circuit inspection is below.

Item	Description
description	The major role, operation of the circuit and its component parts are explained.
Dtc no., Dtc detection condition, trouble area	Indicates the diagnostic trouble codes, diagnostic trouble code detection conditions, and trouble areas of a problem.
Wiring diagram	This shows a wiring diagram of the circuit. Use this diagram together with electrical wiring diagram to thoroughly understand the circuit.
Inspection procedures	Use the inspection procedures to determine if the circuit is normal or abnormal. If abnormal, use the inspection procedures to determine whether the problem is located in the sensors, actuators, wire harnesses or ecu.
Inspection procedure connector illustrations	Connector being checked is connected: connections of tester are indicated by (+) or (-) after the terminal name. Connector being checked is disconnected: for illustrations of inspections between a connector and body ground, information about the body ground is not shown in the illustration.

Problem symptoms table

When a "normal" code is output during a dtc check but the problem is still occurring, use the problem symptoms table. The suspected areas (circuits or parts) for each problem symptom are ...

Electronic circuit inspection procedure

...

Other materials:

Check and replace ecu
Notice: The connector should not be disconnected from the ecu. Perform the inspection from the backside of the connector on the wire harness side. When no measuring condition is specified, perform the inspection with the engine stopped and the ignition switch on. Check that the con ...

Disassembly
Remove no. 1 Side defroster nozzle duct Remove the 3 screws and duct. Remove no. 2 Side defroster nozzle duct Remove the 3 screws and duct. Remove no. 1 Heater to register duct Remove the screw and duct. Remove no. 2 Heater to register duct ...

Terminals of ecu
Check combination meter assembly Measure the voltage and resistance of the connector. Check instrument panel junction block (main body ecu) Measure the voltage and resistance of the connectors. ...