Hyundai Elantra: Troubleshooting - Audio - Body Electrical System - Hyundai Elantra MD 2010-2014 Service manualHyundai Elantra: 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
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
Speaker ↔ H/U wiring
R-4
Speaker input Waveform
R-5
Noise occurs
Proceed to "noise occurs"
R-7
Radio broadcast cannot be received <poor reception>
Proceed to "radio broadcast cannot be received (poor reception)"
R-6
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-12
Disc cannot be ejected.
Radio receiver power source circuit
R-1
CD sound skips
CD player
R-13
Illumination for radio receiver does not come on whth light
control switch on.
Illumination circuit
R-8
Head unit display
R-8
Radio receiver power source circuit
R-1
Display does not dim with light control switch turned on
Illumination circuit
R-9
Power does not turn off
Audio H/U
R-1
Bluetooth voice recognition faulty
Audio H/U
R-1
Mic input
R-10
USB I/F error
Audio H/U
R-1
Usb device faulty
R-11
Multimedia terminal connection
R-10
iPod I/F error
Audio H/U
R-1
Ipod faulty
R-11
Multimedia terminal connection
R-10
AUX connection error
Audio H/U
R-1
Multimedia terminal connection
R-10

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 : Check the wiring harness and connector
1.
Remove the audio head unit
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

R-5 : Check the wiring harness and connector
1.
Remove the audio head unit
2.
Check the output of audio head unit 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

R-6 : 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 and repair the glass antenna. (Refer to "Antenna - Glass antenna test")
R-7 : 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
Х
When rapidly accelerating on unpaved road
Х
When engine switch is turned on (IG)
Fuel pump noise
Х
When horn switch is pressed and released
Х
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-8 : 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
Tester Connection
Condition
Specified Condition
CON-A8/H8 ↔ 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
Tester Connection
Condition
Specified Condition
CON-A17/H17 ↔ 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-9: 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

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<BELOW 1V> : 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-10 : 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-11 : 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.