Dimmer Signal Circuit

NAVIGATION SYSTEM: Dimmer Signal Circuit

Dimmer Signal Circuit

DESCRIPTION

The multi-display dims the display and panel switches by receiving a TAIL cancel signal from the body ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (BODY ECU - MULTI-DISPLAY)





(a) Disconnect the body ECU connector B5 and multi-display connector M5.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT BODY ECU (OUTPUT SIGNAL)





(a) Reconnect the body ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Turn the light control switch to the TAIL or HEAD position.
(d) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- GO TO LIGHTING SYSTEM
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE