NO.4 NO SOUND FROM AUDIO SYSTEM [CAR-NAVIGATION SYSTEM]

id0903e8910400

4

No sound from audio system

POSSIBLE CAUSE

•  Car-navigation unit malfunction

•  Poor connection of car-navigation unit connector, terminal damage

•  Open circuit in wiring harness between car-navigation unit and each speaker (without Bose^®)

•  Speaker malfunction

•  Audio amplifier malfunction (with Bose^®)

•  Poor connection of audio amplifier connector, terminal damage (with Bose^®)

•  Open circuit in wiring harness between car-navigation unit and audio amplifier (with Bose^®)

•  Open circuit in wiring harness between audio amplifier and each speaker (with Bose^®)

4	No sound from audio system
POSSIBLE CAUSE	• Car-navigation unit malfunction • Poor connection of car-navigation unit connector, terminal damage • Open circuit in wiring harness between car-navigation unit and each speaker (without Bose^®) • Speaker malfunction • Audio amplifier malfunction (with Bose^®) • Poor connection of audio amplifier connector, terminal damage (with Bose^®) • Open circuit in wiring harness between car-navigation unit and audio amplifier (with Bose^®) • Open circuit in wiring harness between audio amplifier and each speaker (with Bose^®)

Diagnostic procedure

Without Bose^®

STEP	INSPECTION		ACTION
1	• Switch the ignition to ACC. • Start audio system sing the steering switch. • Adjust volume 30 using the steering switch. • Is there sound from all speaker?	Yes	The system is normal.
1		No	Go to the next step.
2	• Switch the ignition to off. • Disconnect the car-navigation unit connector (24-pin). • Inspect both car-navigation unit connector and wiring harness-side connector for poor connection (such as damaged/pulled out pins, corrosion). • Are all the pins normal?	Yes	Go to the next step.
2		No	If the car-navigation unit connector is wrong: • Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
3	• Inspect the connection of each speaker connector (4-pin). • Are the connectors securely connected?	Yes	Go to the next step.
3		No	Securely connect the speaker.
4	• Disconnect the all speaker and tweeter connectors. • Inspect both each speaker/tweeter and wiring harness-side connector for poor connection (such as damaged/pulled out pins, corrosion.) • Are all the pins normal?	Yes	Go to the next step.
4		No	If the speaker connector is wrong: • Replace the suspect part. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
5	• Switch the ignition to off. • Disconnect the all speaker/tweeter connectors. • Inspect the following wiring harness between car-navigation unit connector (24-pin) and each speaker (4-pin) terminals. For front door speaker ― Terminal 1A (LH+) — terminal C ― Terminal 1C (LH-) — terminal B ― Terminal 1D (RH+) — terminal C ― Terminal 1F (RH-) — terminal B For rear door speaker ― Terminal 1S (LH+) — terminal C ― Terminal 1U (LH-) — terminal B ― Terminal 1V (RH+) — terminal C ― Terminal 1X (RH-) — terminal B For tweeter ― Terminal 1A (LH+) — terminal C ― Terminal 1C (LH-) — terminal B ― Terminal 1D (RH+) — terminal C ― Terminal 1F (RH-) — terminal B • Is there open or short circuit?	Yes	Repair or replace suspected wiring harness.
5		No	Go to the next step.
6	• Inspect each speaker. (See FRONT DOOR SPEAKER INSPECTION.) (See REAR DOOR SPEAKER INSPECTION.) (See TWEETER INSPECTION.) • Are all speakers normal?	Yes	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)
6		No	Replace the malfunctioning speaker/ (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.)

With Bose^®

STEP	INSPECTION		ACTION
1	• Switch the ignition to ACC. • Start audio system using the steering switch • Adjust volume 30 using the steering switch. • Is there sound from all speaker/tweeter?	Yes	The system is normal.
1		No	Go to the next step.
2	• Switch the ignition to off. • Inspect the connection of audio amplifier connector. • Is the connector securely connected?	Yes	Go to the next step.
2		No	Securely connect the audio amplifier.
3	• Disconnect the audio amplifier connector. • Inspect both audio amplifier connector and wiring harness-side connector for poor connection (such as damaged/pulled out pins, corrosion). • Are all the pins normal?	Yes	Go to the next step.
3		No	If the audio amplifier connector is wrong: • Replace the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
4	• Inspect the connection of car-navigation unit connector (24-pin). • Is the connector securely connected?	Yes	Go to the next step.
4		No	Securely connect the car-navigation unit.
5	• Disconnect the car-navigation unit connector (24-pin). • Inspect both car-navigation unit connector and wiring harness-side connector for poor connection (such as damaged/pulled out pins, corrosion). • Are all the pins normal?	Yes	Go to the next step.
5		No	If the car-navigation unit connector is wrong: • Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
6	• Car-navigation unit and audio amplifier connectors disconnected. • Inspect the following wiring harness between the car-navigation unit (24-pin) and audio amplifier. ― Terminal 1A (LH+)—Terminal 1D (L.H.D.)/1F (R.H.D.) ― Terminal 1C (LH-)—Terminal 1C(L.H.D.)/1E (R.H.D.) ― Terminal 1D (RH+)—Terminal 1F(L.H.D.)/1D (R.H.D.) ― Terminal 1F (RH-)—Terminal 1E(L.H.D.)/1C (R.H.D.) ― Terminal 1S (RL+)— Terminal 1H(L.H.D.)/1J (R.H.D.) ― Terminal 1U (RL-)— Terminal 1G(L.H.D.)/1I (R.H.D.) ― Terminal 1V (RR+)— Terminal 1J(L.H.D.)/1H (R.H.D.) ― Terminal 1X (RR-)— Terminal 1I(L.H.D.)/1G (R.H.D.) • Is there open or short circuit?	Yes	Repair or replace suspected wiring harness.
6		No	Go to the next step.
7	• Disconnect the all speaker and tweeter connectors. • Inspect both each speaker/tweeter and wiring harness-side connector for poor connection (such as damaged/pulled out pins, corrosion.) • Are all the pins normal?	Yes	Go to the next step.
7		No	If the speaker connector is wrong: • Replace the suspect part. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See CENTER SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.) (See REAR SPEAKER REMOVAL/INSTALLATION.) (4SD) (See BASS-BOX REMOVAL/INSTALLATION.) (5HB/WGN) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
8	• Audio amplifier and all speaker and tweeter connectors disconnected. • Inspect the following wiring harness between the audio amplifier and each speaker/tweeter. For front door speaker ― Terminal 3D (LH+, L.H.D)/3F (LH+, R.H.D.)—Terminal C ― Terminal 3C (LH-, L.H.D)/3E (LH-, R.H.D.)—Terminal B ― Terminal 3F (RH+, L.H.D)/3D (RH+, R.H.D.)—Terminal C ― Terminal 3E (RH-, L.H.D)/3C (RH-, R.H.D.)—Terminal B For tweeter ― Terminal 3D (LH+, L.H.D)/3F (LH+, R.H.D.)—Terminal D ― Terminal 3C (LH-, L.H.D)/3E (LH-, R.H.D.)—Terminal A ― Terminal 3F (RH+, L.H.D)/3D (RH+, R.H.D.)—Terminal D ― Terminal 3E (RH-, L.H.D)/3C (RH-, R.H.D.)—Terminal A For rear door speaker ― Terminal 2D (LH+, L.H.D)/2M (LH+, R.H.D.)—Terminal C ― Terminal 2B (LH-, L.H.D)/2O (LH-, R.H.D.)—Terminal B ― Terminal 2M (RH+, L.H.D)/2D (RH+, R.H.D.)—Terminal C ― Terminal 2O (RH-, L.H.D)/2B (RH-, R.H.D.)—Terminal B For center speaker ― Terminal 2I (+)—Terminal B ― Terminal 2K (-)—Terminal A For rear speaker (4SD) ― Terminal 3H (+)—Terminal B ― Terminal 3G (-)—Terminal D For bass-box(5HB/WGN) ― Terminal 3H (+)—Terminal B/F ― Terminal 3G (-)—Terminal C/D • Is there open or short circuit?	Yes	Repair or replace suspected wiring harness.
8		No	Go to the next step.
9	• Inspect the suspect speaker. (See FRONT DOOR SPEAKER INSPECTION.) (See REAR DOOR SPEAKER INSPECTION.) (See CENTER SPEAKER INSPECTION.) (See TWEETER INSPECTION.) (See REAR SPEAKER INSPECTION.) (4SD) (See BASS-BOX INSPECTION.) (5HB/WGN) • Are all speakers normal?	Yes	Go to the next step.
9		No	Replace the speaker. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.) (See CENTER SPEAKER REMOVAL/INSTALLATION.) (See TWEETER REMOVAL/INSTALLATION.) (See REAR SPEAKER REMOVAL/INSTALLATION.) (4SD) (See BASS-BOX REMOVAL/INSTALLATION.) (5HB/WGN)
10	• Replace the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) • Does the sound from audio system?	Yes	Troubleshooting completed. (Audio amplifier malfunction.)
10		No	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)