Navigation System - Microphone Circuit Between Multi-Display And Navigation Ecu

Lexus IS250 IS220d GSE20 ALE20 - NAVIGATION

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - NAVIGATION ECU)

NAVIGATION SYSTEM - Microphone Circuit between Multi-display and Navigation ECU

DESCRIPTION

This circuit sends a microphone signal from the multi-display to the navigation ECU.


WIRING DIAGRAM

Navigation System - Microphone Circuit Between Multi-Display And Navigation Ecu. NAVIGATION. Lexus IS250 IS220d GSE20 ALE20

INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - NAVIGATION ECU)
Navigation System - Microphone Circuit Between Multi-Display And Navigation Ecu. NAVIGATION. Lexus IS250 IS220d GSE20 ALE20

Disconnect the multi-display connector p1 and navigation ECU connector p3.

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

  • Standard resistance:
  • Tester connectionConditionSpecified condition
    MCO+ - MIC+AlwaysBelow 1 Ω
    MCO- - MIC-AlwaysBelow 1 Ω
    MCO+ - Body groundAlways10 kΩ or higher
    MCO- - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE