Navigation ECU Power Source Circuit

NAVIGATION: NAVIGATION SYSTEM (for DVD): Navigation ECU Power Source Circuit

Navigation ECU Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the navigation ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTI-DISPLAY POWER SOURCE CIRCUIT
(a) Refer to the multi-display power source circuit Multi-display Power Source Circuit. If the power source circuit is operating normally, proceed to the next step.

NEXT -- Continue to next step.

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




(a) Disconnect the L65 ECU connector.
(b) Disconnect the L64 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.

3. INSPECT MULTI-DISPLAY




(a) Reconnect the L64 display connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE MULTI-DISPLAY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE