Toyota CH-R Service Manual: Turn Signal Switch Circuit

Toyota CH-R Service Manual / Lighting (ext) / Lighting System / 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.

(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	-

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.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY

(a) Remove the headlight dimmer switch assembly.

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(b) Inspect the headlight dimmer switch assembly.

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REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY

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

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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