Kia Soul: Troubleshooting - AVN System - Body Electrical SystemKia Soul: Troubleshooting

Kia Soul EV (PS EV) 2015-2020 Service Manual / Body Electrical System / AVN System / Troubleshooting

Troubleshooting Guide
Troubleshooting (In stages)
Trouble Symptom
Probable Cause
Remedy
System does not turn on when power switch is pressed
Radio receiver power source circuit
R-1
LCD module
R-1
Panel switch does not function
Steering pad switch circuit
R-3
AVN head unit 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
Check the wiring between speakers and AVN H/U
R-6
Noise occurs
Proceed to "noise occurs"
R-5
Radio broadcast cannot be received (poor reception)
Proceed to "radio broadcast cannot be received"
(poor reception)
R-4
Radio receiver lamp does not operate when light control switch is on
Illumination circuit
R-6
Radio receiver power source circuit
R-1
Display does not dim out when light control switch is on
Illumination circuit
R-6
Power does not turn off
AVN H/U
R-1
Bluetooth voice recognition fault
AVN H/U
R-1
MIC input
R-7
USB I/F error
AVN head unit
R-1
USB device fault
R-8
Check the multimedia connector
R-8
iPod I/F error
AVN H/U
R-1
Check the multimedia connector
R-8
AUX connection error
AVN H/U
R-1
Check the multimedia connector
R-8

R-1 : Replace the AVN head unit
1.
Check the same problem after replacing the AVN H/U.
OK
? If AVN is operating normally, replace the AVN H/U.

NG
? Check the vehicle wiring. (Refer to removal procedure, R-2)

R-2 : Check the power connection of AVN H/U
1.
Remove the AVN H/U.
2.
Check the specified condition of terminal.

OK

Tester Connection
Condition
Specified Condition
CON-B11/B12 - GND (B+)
Always
9 ~ 16 V
CON-B18 - GND (ACC)
Always
9 ~ 16 V
CON-B23 - GND
Always
Below 1?
CON-B24 - GND
Always
Below 1?

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 AVN H/U

NG
? Replace the steering wheel remote control switch

R-4 : Radio broadcast cannot be received (Bad reception)
1.
Check the radio broadcast reception after replacing the AVN H/U
OK
? If AVN is operating normally, replace the AVN H/U.

NG
? Go to step 2

2.
Check the antenna jack
OK
? Check the radio broadcast reception again after connecting the antenna jack.

NG
? Go to step 3

3.
Check the antenna amp input voltage (Refer to “Antenna –Glass antenna circuit inspection”)
OK
? Check the antenna amp input voltage (Refer to “Antenna –Antenna cable”)

NG
? Go to step 4

4.
Check the feeder cable connection (Refer to “Antenna –Antenna cable”)
OK
? Check again after repairing or replacing the antenna feeder cable.

NG
? Go to step 5

5.
Check and repair the roof antenna.
R-5 : Check that speakers are installed tightly
OK
? Install the speakers tightly

NG
? Install the speakers tightly

1.
Noise source description
Conditions of Noise Occurrences
Noise Type
Depressing accelerator pedal increases noise, and stopping engine stops noise immediately
Generator noise
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

R-6 : Check again after replacing the AVN H/U

OK
? Remove the AVN H/U.

NG
? Go to step 1

1.
Check the input signal of illumination (+)
Tester Connection
Condition
Specificed Condition
CON-A8 - GND
Always
9~16 V

OK
? Check the vehicle wiring

NG
? Go to step2

2.
Check the illumination (-) input signal using the oscilloscope
Tester Connection
Condition
Specificed Condition
CON-A17 - GND
Always
Check the PWM waveform

OK
? Check the vehicle wiring and cluster PWM output

NG
? Go to step3

3.
Check the vehicle illumination control unit
R-7 : Check the microphone input condition

Tester Connection
Condition
Specificed Condition
CON-B10 - MIC (+)
Always
Below 1?
CON-B22 - MIC (-)
Always
Below 1?
CON-B22 - GND
Always
Open

OK
? Check the vehicle wiring and microphone

NG
? Go to step1

1.
Test again after replacing the microphone
R-8 : Test after replacing the AVN H/U

1.
Test after replacing the multimedia jack
OK
? Replace the multimedia jack

NG
? Go to step 2

2.
Check the vehicle USB cable.
OK
? Replace the vehicle USB cable

NG
? Go to step 3

3.
Check the multimedia jack connector
Tester Connection
Condition
Specificed Condition
AVN H/U CON-B8 - Multimedia jack CON-C2
Always
Below 1?
AVN H/U CON-B21 - Multimedia jack CON-C1
Always
Below 1?
AVN H/U CON-B20 - Multimedia jack CON-C3
Always
Below 1?
AVN H/U CON-B9 - Multimedia jack CON-C7
Always
Below 1?

Troubleshooting (Flow chart type)
There are six areas where a problem can occur
: the power system, the LCD/LED system, the sound system, the radio system, the USB/iPod/AUX system, and the bluetooth system.
Troubleshooting enables you to narrow down to the specific cause of the problem.

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