Dimmer Signal Circuit (Radio Receiver Assy)

DIMMER SIGNAL CIRCUIT (RADIO RECEIVER ASSY)

CIRCUIT DESCRIPTION
The multiplex network body ECU sends a panel illumination signal to the radio receiver assy through this circuit.

The multiplex network body ECU judges the ambient brightness based on the light level detected by the automatic light control sensor and performs dim control.

HINT: If there is malfunction in the automatic light control sensor, DTC B1244 is output.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE