NO SOUND OUTPUT IN ALL MODES [CAR-NAVIGATION SYSTEM (DISPLAY-INTEGRATED TYPE)]

id0903l4103300

Description

No sound output in all modes

POSSIBLE CAUSE

•  Short or open circuit to ground in wiring harness between car-navigation unit and speakers

•  Short to ground in speakers

•  Speaker malfunction

•  Car-navigation unit malfunction

Description	No sound output in all modes
POSSIBLE CAUSE	• Short or open circuit to ground in wiring harness between car-navigation unit and speakers • Short to ground in speakers • Speaker malfunction • Car-navigation unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Play CD or tune in the radio.

•  Is the volume setting “50” or more?

Note

•  Volume sufficient for audio verification without affect from surrounding environment is “50” or more.

Yes

Go to the next step.

No

Adjust the volume setting to “50” or more and verify the malfunction symptom again.

If the malfunction is not resolved, go to the next step.

2

VERIFY IF MALFUNCTION CAUSE IS SHORT OR OPEN CIRCUIT TO GROUND IN WIRING HARNESS BETWEEN CAR-NAVIGATION UNIT AND SPEAKERS

•  Switch the ignition OFF (LOCK).

•  Pull out the car-navigation unit.

•  Disconnect the car-navigation unit connector and inspect the vehicle wiring harness connected to the speakers for continuity.

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part for a short circuit to ground in the wiring harness between the applicable car-navigation unit and speakers, or a short circuit to ground in the speaker unit.

Note

•  If the speaker wiring harness or speaker lead wire is shorted to ground, the protective circuit in the car-navigation unit may operate resulting in no sound.

3

DETERMINE IF MALFUNCTION CAUSE IS SPEAKER

•  Inspect the speakers.
(See FRONT DOOR SPEAKER INSPECTION.)

(See REAR DOOR SPEAKER INSPECTION.)

(See FRONT CENTER SPEAKER INSPECTION.)

(See FRONT SIDE SPEAKER INSPECTION.)

(See REAR SPEAKER INSPECTION.)

(See TWEETER INSPECTION.)

•  Is the speaker resistance normal?

Note

•  If a lead wire contacts the ground or frame, replace the speaker.

Yes

Replace the car-navigation unit.

(See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)

(See CAR-NAVIGATION UNIT DISASSEMBLY/ASSEMBLY.)

No

Replace the speaker.

(See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)

(See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)

(See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.)

(See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.)

(See REAR SPEAKER REMOVAL/INSTALLATION.)

(See TWEETER REMOVAL/INSTALLATION.)

Step	Inspection		Action
1	VERIFY MALFUNCTION SYMPTOM • Play CD or tune in the radio. • Is the volume setting “50” or more? Note • Volume sufficient for audio verification without affect from surrounding environment is “50” or more.	Yes	Go to the next step.
1		No	Adjust the volume setting to “50” or more and verify the malfunction symptom again. If the malfunction is not resolved, go to the next step.
2	VERIFY IF MALFUNCTION CAUSE IS SHORT OR OPEN CIRCUIT TO GROUND IN WIRING HARNESS BETWEEN CAR-NAVIGATION UNIT AND SPEAKERS • Switch the ignition OFF (LOCK). • Pull out the car-navigation unit. • Disconnect the car-navigation unit connector and inspect the vehicle wiring harness connected to the speakers for continuity. • Is there continuity?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning part for a short circuit to ground in the wiring harness between the applicable car-navigation unit and speakers, or a short circuit to ground in the speaker unit. Note • If the speaker wiring harness or speaker lead wire is shorted to ground, the protective circuit in the car-navigation unit may operate resulting in no sound.
3	DETERMINE IF MALFUNCTION CAUSE IS SPEAKER • Inspect the speakers. (See FRONT DOOR SPEAKER INSPECTION.) (See REAR DOOR SPEAKER INSPECTION.) (See FRONT CENTER SPEAKER INSPECTION.) (See FRONT SIDE SPEAKER INSPECTION.) (See REAR SPEAKER INSPECTION.) (See TWEETER INSPECTION.) • Is the speaker resistance normal? Note • If a lead wire contacts the ground or frame, replace the speaker.	Yes	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.) (See CAR-NAVIGATION UNIT DISASSEMBLY/ASSEMBLY.)
3		No	Replace the speaker. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.) (See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.) (See REAR SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.)