Introduction

Circuit inspection

~1min read

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.

Test yourself

A quick Toyota RAV4 quiz: every answer comes with an explanation and a link to the manual page.