Toyota CH-R Service Manual: Headlight Dimmer Switch Circuit

Toyota CH-R Service Manual / Lighting (ext) / Lighting System / Headlight Dimmer Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives the following switch information:

  • Light control switch in tail, head or AUTO position
  • Dimmer switch in high, low or high flash (pass) position
  • Fog light switch in front or off position*1
  • *1: w/ Fog Light

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*1

Click here

  • *1: w/ Smart Key System

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 / Main Body / Data List.

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

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Dimmer SW

Dimmer switch high position signal

ON or OFF

ON: Dimmer switch in high or high flash position

OFF: Dimmer switch in low position

-

Passing Light SW

Dimmer switch high flash position (pass) signal

ON or OFF

ON: Dimmer switch in high flash position

OFF: Dimmer switch not in high flash position

-

Front Fog Light SW

Fog light switch front position signal

ON or OFF

ON: Fog light switch in front position

OFF: Fog light switch off

*1

Auto Light SW

Light control switch AUTO position signal

ON or OFF

ON: Light control switch in AUTO position

OFF: Light control switch not in AUTO position

-

Head Light SW (Head)

Light control switch head position signal

ON or OFF

ON: Light control switch in head position

OFF: Light control switch not in head position

-

Head Light SW (Tail)

Light control switch tail position signal

ON or OFF

ON: Light control switch in tail or head position

OFF: Light control switch not in tail or head position

-

  • *1: w/ Fog Light
Body Electrical > Main Body > Data List

Tester Display

Dimmer SW

Passing Light SW

Front Fog Light SW

Auto Light SW

Head Light SW (Head)

Head Light SW (Tail)

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

HINT:

Inspect the items that did not change when reading the Data List.

(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 - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the F15 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F24-9 (BFG) - F15-26 (FFOG)*1

Always

Below 1 Ω

F24-14 (HU) - F15-24 (HU)

Always

Below 1 Ω

F24-17 (HF) - F15-10 (HF)

Always

Below 1 Ω

F24-18 (T) - F15-22 (TAIL)

Always

Below 1 Ω

F24-19 (H) - F15-12 (HEAD)

Always

Below 1 Ω

F24-20 (A) - F15-8 (A)

Always

Below 1 Ω

F24-9 (BFG) or F15-26 (FFOG) - Body ground*1

Always

10 kΩ or higher

F24-14 (HU) or F15-24 (HU) - Body ground

Always

10 kΩ or higher

F24-17 (HF) or F15-10 (HF) - Body ground

Always

10 kΩ or higher

F24-18 (T) or F15-22 (TAIL) - Body ground

Always

10 kΩ or higher

F24-19 (H) or F15-12 (HEAD) - Body ground

Always

10 kΩ or higher

F24-20 (A) or F15-8 (A) - Body ground

Always

10 kΩ or higher

F24-15 (EL) - Body ground

Always

Below 1 Ω

F24-8 (LFG) - Body ground*1

Always

Below 1 Ω

*1: w/ Fog Light

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    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 ...

    Daytime Running Light Relay Circuit
    DESCRIPTION The main body ECU (multiplex network body ECU) controls the daytime running lights. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to ...

    Other materials:

    Toyota CH-R Service Manual > Rear View Monitor System: Back Camera Disconnected (C1622)
    DESCRIPTION This DTC is stored if the radio and display receiver assembly judges that the signals or signal lines between the radio and display receiver assembly and the rear television camera assembly are not normal as a result of its self check. DTC No. Detection Item ...

    Toyota CH-R Service Manual > Cellular Communication: Back-up Battery
    Components COMPONENTS ILLUSTRATION *1 MOBILEPHONE BATTERY *2 TRANSCEIVER COVER Removal REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after ...

    © 2017-2019 Copyright www.tochr.net
    0.017