| SONATA(YF) >2013 > G 2.4 GDI > Body Electrical System > Audio>Troubleshooting |

Troubleshooting

Symptom | Suspected area | Repairment
Pressing power switch does not turn on system | Radio receiver power source circuit | R-1
LCD module | R-1
Monitor | R-7
Monitor power | R-9 R-10
Panel switch does not function | Steering pad switch circuit | R-3
Audio H/U front pcb ass'y | R-1
Radio receiver power source circuit | R-1
No sound can be heard from speakers | Radio receiver power source circuit | R-1
EXT. AMP I/F (For PA-760S) | R-4 R-6 R-8
EXT. AMP power source (For PA-760S) | R-5
Speaker ↔ H/U wiring | R-11
Speaker input Waveform | R-12
Noise occurs | Proceed to "noise occurs" | R-14
Radio broadcast cannot be received | Proceed to "radio broadcast cannot be received (poor reception)" | R-13
Disc cannot be inserted or is ejected right after insertion | Radio receiver power source circuit | R-1
Proceed to "Disc cannot be inserted or is ejected right after insertion" | R-19
Disc cannot be ejected. | Radio receiver power source circuit | R-1
CD sound skips | CD player | R-20
Illumination for radio receiver does not come on whth light control switch on. | Illumination circuit | R-15
Head unit display | R-15
Radio receiver power source circuit | R-1
Display does not dim with light control switch turned on | Illumination circuit | R-16
Power does not turn off | Audio H/U | R-1
Bluetooth voice recognition faulty | Audio H/U | R-1
Mic input | R-17
USB I/F error | Auido H/U | R-1
Usb device faulty | R-18
Multimedia terminal connection | R-17
iPod I/F error | Auido H/U | R-1
Ipod faulty | R-18
Multimedia terminal connection | R-17
AUX connection error | Auido H/U | R-1
Multimedia terminal connection | R-17

R-1 : Replace the audio head unit

1. | Check the same problems after replaceing the audio head unit

OK | ▶ If Audio is normal operating, replace the audio head unit
NG | ▶ Check the vehicle wiring. (Refer to removal procedure. R-2)

R-2 : Check the power connection of audio head unit.

1. | Remove the audio head unit.

2. | Check the specified condition of terminal.

OK |

Tester Connection | Condition | Specified Condition
CON-B11 ↔ GND | Always | 9~12 V
CON-B12 ↔ GND | Always | 9~12 V
CON-B24 ↔ GND | Always | Below 1Ω

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-3 : Check the steering wheel remote control

1. | Check the steering wheel remote control connector specification (Refer to "Audio remote control - inspection")

OK | ▶ Replace the audio head unit. (Refer to R-1)
NG | ▶ Replace the steering wheel remote control switch.

R-4 : Replace the external amplifier

1. | Check the same problems after replaceing the external amplifier

OK | ▶ If Audio is normal operating, replace the external amplifier
NG | ▶ Check the connectors of external amplifier power and interface (Refer to R-5,R-6 and R-8)

R-5 : Check the external amplifier power cable

1. | Remove the external amplifier

2. | Check the specified condition of terminal.

OK |

Tester Connection | Condition | Specified Condition
CON-E1 ↔ GND | Always | 9~12 V
CON-E7 ↔ GND | Always | 9~12 V
CON-E15 ↔ GND | Always | Below 1Ω

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-6 : Check the external amplifier CAN interface

1. | Remove the audio head Unit.

2. | Remove the external amplifier

3. | Check the specified condition of terminal.

OK

Tester Connection | Condition | Specified Condition
CON-I1 ↔ CON-E5 | Always | Below 1Ω
CON-I1 ↔ GND CON-E5 ↔ GND | Always | OPEN
CON-I13 ↔ CON-E6 | Always | Below 1Ω
CON-I13 ↔ GND CON-E6 ↔ GND | Always | OPEN

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-7 : Check the audio monitor CAN interface

1. | Remove the audio head unit.

2. | Remove the audio monitor.

3. | Check the specified condition of terminal.

OK

Tester Connection | Condition | Specified Condition
CON-I1 ↔ CON-C8 | Always | Below 1Ω
CON-I1 ↔ GND CON-C8 ↔ GND | Always | OPEN
CON-I13 ↔ CON-C7 | Always | Below 1Ω
CON-I13 ↔ GND CON-C7 ↔ GND | Always | OPEN

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-8 : Check the external amplifier S/PDIF connection

1. | Remove the audio head unit.

2. | Remove the external amplifier

3. | Check the specified condition of terminal.

OK

Tester Connection | Condition | Specified Condition
CON-H6 ↔ CON-E19 | Always | Below 1Ω
CON-H6 ↔ GND CON-E19↔ GND | Always | OPEN
CON-H15 ↔ CON-E18 | Always | Below 1Ω
CON-H15 ↔ GND CON-E18 ↔ GND | Always | OPEN

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-9 : Replace the audio monitor

1. | Check the same problems after replaceing the audio head unit

OK | ▶ If Audio is normal operating, replace the audio head unit

NG | ▶ Check the vehicle wiring. (Refer to R-10 and R-7)

R-10 : Check the monitor power cable

1. | Remove the audio monitor.

2. | Check the specified condition of terminal.

OK

Tester Connection | Condition | Specified Condition
CON-C9 ↔ GND | Always | 9~12 V
CON-C10 ↔ GND | Always | 9~12 V
CON-C4 ↔ GND | Always | OPEN

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-11 : Check the wiring harness and connector

1. | Remove the audio head unit

2. | Remove the external amplifier (For PA760s)

OK | ▶ FOR PA-710S

Tester Connection | Condition | Specified Condition
CON-A1 ↔ RL SPK + | Always | Below 1Ω
CON-A10 ↔RL SPK - | Always | Below 1Ω
CON-A2 ↔ FL SPK + | Always | Below 1Ω
CON-A11 ↔ FL SPK - | Always | Below 1Ω
CONA3 ↔ FR SPK + | Always | Below 1Ω
CON-A12 ↔ FR SPK - | Always | Below 1Ω
CON-A4 ↔ RR SPK + | Always | Below 1Ω
CON-A13 ↔ RR SPK - | Always | Below 1Ω
CON-A1, 2, 3, 4, 10, 11, 12, 13 ↔ GND | Always | OPEN

OK | ▶ FOR PA-760S

Tester Connection | Condition | Specified Condition
CON-E12 ↔ SUB WOOFER2 + | Always | Below 1Ω
CON-E25 ↔ SUB WOOFER2 - | Always | Below 1Ω
CON-E13 ↔ SUB WOOFER1 + | Always | Below 1Ω
CON-E26 ↔ SUB WOOFER1 - | Always | Below 1Ω
CON-F7 ↔ CENTER SPK + | Always | Below 1Ω
CON-F14 ↔ CENTER SPK - | Always | Below 1Ω
CON-G1 ↔ RR DOOR SPK + | Always | Below 1Ω
CON-G7 ↔ RR DOOR SPK - | Always | Below 1Ω
CON-G2 ↔ RL DOOR SPK + | Always | Below 1Ω
CON-G8 ↔ RL DOORSPK - | Always | Below 1Ω
CON-G3 ↔ FR SPK + | Always | Below 1Ω
CON-G9 ↔ FR SPK - | Always | Below 1Ω
CON-G4 ↔ FL SPK + | Always | Below 1Ω
CON-G10 ↔ FL SPK - | Always | Below 1Ω
CON-G5 ↔ FR DOOR SPK + | Always | Below 1Ω
CON-G11 ↔ FR DOOR SPK - | Always | Below 1Ω
CON-G6 ↔ FL DOOR SPK + | Always | Below 1Ω
CON-G12 ↔ FL DOOR SPK - | Always | Below 1Ω
CON-E12, 13, 25, 26/ F7, 14/ G1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ↔ GND | Always | OPEN

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-12 : Check the wiring harness and connector

1. | Remove the audio head unit

2. | Remove the external amplifier (For PA760S)

3. | Check the output of audio head unit and external amplifier using the oscilloscope

OK | ▶ FOR PA-710S

Tester Connection | Condition | Specified Condition
CON-A1 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A10 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A2 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A11 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A3 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A12 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A4 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-A13 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output

OK | ▶ FOR PA-760S

Tester Connection | Condition | Specified Condition
CON-E12 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-E25 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-E13 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-E26 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-F7 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-F14 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G1 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G7 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G2 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G8 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G3 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G9 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G4 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G10 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G5 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G11 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G6 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output
CON-G12 ↔ GND | Audio sound is being produced | A waveform synchronized with sound is output

NG | ▶ Check again after repairing or replacing the Cable harness or Connector.

R-13 : Radio Broadcast cannot be Received (Bad reception)

1. | Check the radio broadcast reception after replacing the audio head unit

OK | ▶ If Audio is normal operating, replace the audio head unit

NG | ▶ Go to step 2

2. | Check the antenna jack

NG | ▶ Check again the radio broadcast reception after connecting the antenna jack

OK | ▶ Go to step 3

3. | Check the antenna amp input voltage (Refer to "Antenna - Glass antenna circuit inspection"

NG | ▶ Check the antenna amp input voltage (Refer to "Antenna - Antenna cable"

OK | ▶ Go to step 4

4. | Check the feeder cable connection (Refer to "Antenna - Antenna cable")

NG | ▶ Check again after repairing or replacing the antenna feeder cable.

OK | ▶ Go to step 5

5. | Check again the radio broadcast reception after replacing the external amplifier

OK | ▶ If Audio is normal operating, replace the external amplifier

NG | ▶ Go to step 6

6. | Check and repair the glass antenna. (Refer to "Antenna - Glass antenna test")

R-14 : Check that speakers are installed tightly.

NG | ▶ Install the speakers tightly.

OK | ▶ Go to step 1

1. | Noise source description

Condition in Which Noise Occurs | Noise Type
Depressing accelerator pedal increases noise, and stopping engine stops noise immediately | Generator nosie
When A/C or heater is operating | Blower motor noise

• | When rapidly accelerating on unpaved road

• | When engine switch is turned on (IG)

Fuel pump noise

• | When horn switch is pressed and released

• | When horn switch is pressed and held down

Horn noise
Running engine causes soft noise, and stopping engine stops noise immediately | Ignition noise
Noise occurs synchronously with turn signal flash | Flasher noise
Noise occurs during window washer operation | Washer noise
Running engine causes noise, but stopping engine does not stop noise | Engine coolant temperature sensor noise
When wiper is operating | Wiper noise
When brake pedal is depressed | Stop light switch noise
Other | Static electricity on vehicle

OK | ▶ Check the noise source

NG | ▶ Check again after replacing the audio head unit

2. | Repair or replace the noise source

R-15 : Check again after replacing the audio head unit

OK | ▶ Remove the audio head unit

NG | ▶ Go to step 1

1. | Check the input signal of Illumination (+) FOR PA-710S, 760S

Tester Connection | Condition | Specified Condition
CON-A8/H8 ↔ GND | Always | 9~16 V
CON-C4 ↔ GND | Always | Below 1Ω

FOR LCD

Tester Connection | Condition | Specified Condition
CON-C5 ↔ GND | Always | 9~16 V
CON-C4 ↔ GND | Always | Below 1Ω

NG | ▶ Check the vehicle wiring

OK | ▶ Go to step 2

2. | Check the illumination (-) input signal using the oscilloscope FOR PA-710S, 760S

Tester Connection | Condition | Specified Condition
CON-A17/H17 ↔ GND | Always | Check the PWM waveform

FOR LCD

Tester Connection | Condition | Specified Condition
CON-C1 ↔ GND | Always | Check the PWM waveform

NG | ▶ Check the vehicle wiring and cluster PWM output.

OK | ▶ Go to step 3

3. | Check the vehicle illumination control unit.

R-16 : Test after replacing the audio head unit

OK | ▶ Replace the audio head unit

NG | ▶ Go to step 1

1. | Check the illumination (-) input signal using the oscilloscope FOR PA-710S

Tester Connection | Condition | Specified Condition
CON-A17/H17 ↔ GND | Always | Check the PWM waveform

FOR LCD

Tester Connection | Condition | Specified Condition
CON-C1 ↔ GND | Always | Check the PWM waveform

Is PWM output waveform changed according to vehicle illumination control ?

NG | ▶ Check the vehicle wiring and cluster PWM output module.

OK | ▶ Go to step 2

2. | Check the illumination detent input signal. FOR PA-710S

Tester Connection | Condition | Specified Condition
CON-A9 ↔ GND | Always | LOW : DETENT OFF

FOR LCD

Tester Connection | Condition | Specified Condition
CON-H9 ↔ GND | Always | LOW : DETENT OFF

NG | ▶ Check the vehicle wiring and cluster DETENT output signal

OK | ▶ Go to step 3

3. | Check the vehicle illumination control unit.

R-17 : Check the mic input condition.

Tester Connection | Condition | Specified Condition
CON-B10/I10 ↔ MIC+ | Always | Below 1Ω
CON-B22/I22 ↔ MIC- | Always | Below 1Ω
CON-B22/I22↔ GND | Always | OPEN

NG | ▶ Check the vehicle wiring and B/T mic

OK | ▶ Go to step 1

1. | Test again after replacing the B/T mic

R-18 : Test after replacing the audio head unit

OK | ▶ Replace the audio head unit

NG | ▶ Go to step 1

1. | Test after replacing the multimedia jack.

OK | ▶ Replace the multimedia jack .

NG | ▶ Go to step 2

2. | Check the multimedia jack connector.

Tester Connection | Condition | Specified Condition
CON-B6/I16 ↔ CON-D3 | Always | Below 1Ω
CON-B18/I18 ↔ CON-D2 | Always | Below 1Ω
CON-B7/I7↔ CON-D1 | Always | Below 1Ω
CON-B8/I8↔ COND16 | Always | Below 1Ω
CON-B9/I9↔ CON-D6 | Always | Below 1Ω
CON-B20/I20↔ CON-D14 | Always | Below 1Ω
CON-B21/I21↔ CON-D7 | Always | Below 1Ω
CON-B/I 6, 18, 7, 8, 20, 21 ↔ GND | Always | OPEN

NG | ▶ Check the vehicle wiring

OK | ▶ Go to step 3

3. | Check again after replacing the external input device with another one.

R-19 : Disc cannot be inserted or ejected right after insertion

1. | Is the ignition key at ACC or ON?

OK | ▶ Go to step 2

NG | ▶ Turn the key to ON

2. | Power ON reset. Disconnect the 2 audio fuses, wait 5minutes with ignition switch off. And then insert both fuse. Then turn the ignition key ON. Is CD ejected?

OK | ▶ Loock for foreign matters in CD player. Such as paper lables, coins etc.

NG | ▶ Go to step 3

3. | If CD does not ejected, don't try removing it. The player may be damaged. Please replace the CD player.

R-20 : Sound sometimes skips when parking

1. | Is CD face scratched or dirty?

OK | ▶ CD is defective, or clean CD

NG | ▶ Go to step 2

2. | Does it play properly if CD is replaced with an existing proper CD?

OK | ▶ Replace CD

NG | ▶ Repair or replace CD player