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 in the table. The suspected areas are listed in order of probability. A description of each of the chart's columns are below. HINT:

In some cases, the problem is not detected by the diagnostic system even though a problem symptom is present. It is possible that the problem is occurring outside the detection range of the diagnostic system, or that the problem is occurring in a completely different system.



Problem Symptom


Circuit Inspection, Inspection Order

Indicates the order in which the circuits need to be checked

Circuit or Part Name

Indicates the circuit or part which needs to be checked

See Page

Indicates the page where the flowchart for each circuit is located


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



Circuit Description

The major role, operation of the circuit and its component parts are explained.

Diagnostic Trouble Code No. and Detection Item

Indicates the diagnostic trouble codes, diagnostic trouble code settings and suspected areas for 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.

Wire colors are indicated by an alphabetical code:

The first letter indicates the basic wire color and the second letter indicates the color of the stripe.

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.

Indicates the condition of the connector of the ECU during the check

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.

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