Navigation ECU Power Source Circuit

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: 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. INSPECT FUSE (RAD NO. 1)
(a) Disconnect the RAD NO. 1 fuse from the engine room junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






NG -- REPLACE FUSE
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY, BATTERY AND BODY GROUND)





(a) Disconnect the F32 ECU connector.
(b) Disconnect the F30 display connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





(d) Measure the voltage according to the valve(s) in the table below.
Standard Voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. INSPECT MULTI-DISPLAY





(a) Reconnect the F30 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