Toyota CH-R Service Manual: Turn Signal Switch Circuit

DESCRIPTION

The combination meter assembly receives the turn signal switch information and controls the turn signal lights.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Turn Signal Switch (Right)

Turn signal switch (right) signal

ON or OFF

ON: Turn signal switch (right) on

OFF: Turn signal switch (right) off

-

Turn Signal Switch (Left)

Turn signal switch (left) signal

ON or OFF

ON: Turn signal switch (left) on

OFF: Turn signal switch (left) off

-

Turn Switch Signal (Full Turn)

Turn signal switch (full turn) signal

ON or OFF

ON: Turn signal switch (left or right) on

OFF: Turn signal switch (left and right) off

-

Body Electrical > Combination Meter > Data List

Tester Display

Turn Signal Switch (Right)

Turn Signal Switch (Left)

Turn Switch Signal (Full Turn)

OK:

Normal conditions listed above are displayed.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

(a) Remove the headlight dimmer switch assembly.

Click here

(b) Inspect the headlight dimmer switch assembly.

Click here

NG

REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY OR BODY GROUND)

(a) Disconnect the F5 combination meter assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F24-12 (TR) - F5-9 (ER)

Always

Below 1 Ω

F24-11 (TL) - F5-10 (EL)

Always

Below 1 Ω

F24-13 (CR) - F5-8 (SW)

Always

Below 1 Ω

F24-12 (TR) or F5-9 (ER) - Body ground

Always

10 kΩ or higher

F24-11 (TL) or F5-10 (EL) - Body ground

Always

10 kΩ or higher

F24-13 (CR) or F5-8 (SW) - Body ground

Always

10 kΩ or higher

F24-15 (EL) - Body ground

Always

Below 1 Ω

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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