Toyota CH-R Service Manual: Fail-safe Chart

FAIL-SAFE CHART

FAIL-SAFE FUNCTION

(a) Headlight ECU sub-assembly

(1) The headlight ECU sub-assemblies stop light operation if the following malfunctions are detected.

Malfunction

Multi-information Display Warning

DTC Output

Lighting on/off

LED light source malfunction

Low beam

Displayed

Output

High beam

Not Displayed

Output

Fan malfunction

Displayed

Output

Other than above (communication with main body ECU (multiplex network body ECU))

Displayed

Output

Automatic headlight beam level control system

Displayed

Output

Power supply

IG voltage line malfunction

Displayed

Output

Other than an IG voltage line malfunction

Not displayed

Not output

    Dtc Check / Clear
    DTC CHECK / CLEAR CHECK DTC (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 / HL AutoLevelin ...

    Freeze Frame Data
    FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an automatic headlight beam level control system DTC is stored, the headlight ECU sub-assembly LH stores the current vehicle state as freeze frame ...

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