DVD Image Signal Circuit Between Radio Receiver and Navigation ECU

NAVIGATION: NAVIGATION SYSTEM (for HDD): DVD Image Signal Circuit between Radio Receiver and Navigation ECU
- DVD Image Signal Circuit between Radio Receiver and Navigation ECU

DESCRIPTION

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

WIRING DIAGRAM





INSEPCTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR

(a) Disconnect the R19 radio receiver assembly connector.

(b) Disconnect the D25 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. INSPECT RADIO RECEIVER ASSEMBLY (DVD IMAGE SIGNAL)

(a) Reconnect the R19 radio receiver assembly connector.





(b) Check the waveform according to the table below.

(c) Oscilloscope waveform









HINT
The video waveform changes according to the image output from the radio receiver assembly to the display and navigation module display, but the synchronization signal does not change.

Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Service and Repair

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