Navigation Voice Speaker Circuit

NAVIGATION: NAVIGATION SYSTEM: Navigation Voice Speaker Circuit

Navigation Voice Speaker Circuit

DESCRIPTION

This circuit is used when the voice guidance in the navigation system is on.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - FRONT NO. 2 SPEAKER)





(a) Disconnect the navigation ECU connector L16 and front No. 2 speaker connector D1.
(b) 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 FRONT NO. 2 SPEAKER
(a) Check that the malfunction disappears when another speaker in good condition is installed.
OK:
Malfunction disappears.

HINT:
- Connect all the connectors to the speakers.
- When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.

OK -- REPLACE FRONT NO. 2 SPEAKER

NG -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER - FRONT NO. 2 SPEAKER)





(a) Disconnect the front No. 1 speaker connector H3.
(b) 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.

4. INSPECT FRONT NO. 1 SPEAKER
(a) Resistance check
(1) Measure the resistance between the terminals of the speaker.
Standard resistance:
1.8 to 2.6 Ohms

NG -- REPLACE FRONT NO. 1 SPEAKER
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE