Display Signal Circuit Between Navigation ECU and Radio Receiver

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Display Signal Circuit between Navigation ECU and Radio Receiver
- Display Signal Circuit between Navigation ECU and Radio Receiver

DESCRIPTION

This circuit sends a DVD image signal from the radio receiver assembly to the display and navigation module display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - DISPLAY AND NAVIGATION MODULE DISPLAY)

(a) Disconnect the H1 radio receiver assembly connector.

(b) Disconnect the H3 display and navigation module display connector.

(c) 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. CHECK RADIO RECEIVER ASSEMBLY

(a) Using an oscilloscope, check the waveform between each terminal and the body ground according to the conditions shown in the table below.





Standard:





Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table