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Audio/Video/Navigation (AVN) System: Troubleshooting

Symptom Suspected area Repair
Pressing power switch does not turn on system AVN head unit receiver power source circuit R-2
AVN monitor R-15
Panel switch does not function Steering pad switch circuit R-3
AVN H/U front PCB assembly R-1
AVN head unit receiver power source circuit R-2
No sound can be heard from speakers AVN head unit receiver power source circuit R-2
EXT. AMP I/F R-4
R-6
R-7
EXT. AMP power source R-5
Check the wiring between speakers and AVN head unit R-8
Noise occurs Proceed to "noise occurs" R-14
AVN head unit broadcast cannot be received Proceed to "AVN head unit broadcast cannot be received (poor reception)" R-9
Disc cannot be inserted or is ejected right after insertion Disc cannot be inserted or is ejected right after insertion R-10
Disc cannot be ejected. AVN head unit receiver power source circuit R-2
Illumination for AVN head unit receiver does not come on with light Illumination circuit R-11
control switch on. AVN head unit receiver power source circuit R-2
Display does not dim with light control switch turned on Illumination circuit R-11
Power does not turn off AVN head unit R-1
BLUETOOTH voice recognition fault AVN head unit R-1
MIC input R-12
USB I/F error AVN head unit R-1
USB device fault R-13
Check the multimedia connector R-13
iPod I/F error AVN head unit R-1
iPod fault R-13
Check the multimedia connector R-13
AUX connection error AVN head unit R-1
Check the multimedia connector R-13
AVN monitor error AVN monitor unit R-15
AVN monitor unit receiver power source circuit R-16

R-1: Replace the AVN head unit 

  1. Check the same problems after replacing the AVN head unit

    OK

    • If AVN is normal operating, replace the AVN head unit

    NG

    • Check the vehicle wiring. (Refer to REMOVAL  procedure. R-2)

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

  1. Remove the AVN head unit.
  2. Check the specified condition of terminal.
    Fig 1: Identifying AVN Head Unit Connector Terminals
    G10368764Courtesy of HYUNDAI MOTOR AMERICA

    OK

    Tester Connection Condition Specified Condition
    CON-B11 ↔ GND Always 9~16 V
    CON-B12 ↔ GND Always 9~16 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 "INSPECTION ")

    OK

    • Replace the AVN 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 replacing the external amplifier

    OK

    • If AVN 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-7)

R-5: Check the external amplifier power cable 

  1. Remove the external amplifier
  2. Check the specified condition of terminal.
    Fig 2: External Amplifier Connector Terminals
    G10368765Courtesy of HYUNDAI MOTOR AMERICA

    OK

    Tester Connection Condition Specified Condition
    CON-E1 ↔ GND Always 9~16 V
    CON-E7 ↔ GND Always 9~16 V
    CON-E14 ↔ 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 AVN head Unit.
  2. Remove the external amplifier
  3. Check the specified condition of terminal.
    Fig 3: AVN Head Unit Connector Terminals
    G10368766Courtesy of HYUNDAI MOTOR AMERICA
    Fig 4: External Amplifier Connector Terminals
    G10368767Courtesy of HYUNDAI MOTOR AMERICA

    OK 

    Tester Connection Condition Specified Condition
    CON-B1 ↔ CON-E5 Always Below 1Ω
    CON-B1 ↔ GND
    CON-E5 ↔ GND    		 Always OPEN
    CON-B13 ↔ CON-E6 Always Below 1Ω
    CON-B13 ↔ GND
    CON-E6 ↔ GND    		 Always OPEN

    NG 

    • Check again after repairing or replacing the Cable harness or Connector.

R-7: 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.
    Fig 5: Audio Head Unit Connector Terminals
    G10368768Courtesy of HYUNDAI MOTOR AMERICA
    Fig 6: External Amplifier Connector Terminals
    G10368769Courtesy of HYUNDAI MOTOR AMERICA

    OK 

    Tester Connection Condition Specified Condition
    CON-A6 ↔ CON-E18 Always Below 1Ω
    CON-A6 ↔ GND
    CON-E18↔ GND    		 Always OPEN
    CON-A15 ↔ CON-E1 Always Below 1Ω
    CON-A15 ↔ GND
    CON-E19 ↔ GND    		 Always OPEN

    NG 

    • Check again after repairing or replacing the Cable harness or Connector.

R-8: Check the wiring harness and connector 

  1. Remove the AVN head unit
  2. Remove the external amplifier

    OK 

    Fig 7: AVN Head Unit Connector Terminals
    G10368770Courtesy of HYUNDAI MOTOR AMERICA
    Fig 8: External Amplifier Connector Terminals
    G10368771Courtesy of HYUNDAI MOTOR AMERICA
    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-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-F1 ↔ Surround Right + Always Below 1Ω
    CON-F9 ↔ Surround Right - Always Below 1Ω
    CON-F2 ↔ Surround Left + Always Below 1Ω
    CON-F10 ↔ Surround Left - Always Below 1Ω
    CON-F7 ↔ Center SPK + Always Below 1Ω
    CON-F15 ↔ Center SPK - Always Below 1Ω
    CON-E12, 13, 25, 26/F1, 2, 7, 9, 10, 15/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-9: Radio Broadcast cannot be Received (Bad reception) 

  1. Check the radio broadcast reception after replacing the AVN head unit

    OK 

    • If AVN is normal operating, replace the AVN 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

    NG 

    • Check the antenna amp input voltage

    OK 

    • Go to step 4
  4. Check the feeder cable connection

    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.

R-10: 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 5 minutes with ignition switch off. And then insert both fuse. Then turn the ignition key ON. Is CD ejected?

    OK 

    • Look for foreign matters in CD player. Such as paper labels, coins etc.

    NG 

    • Go to step 3
  3. If CD does not eject, don't try removing it. The player may be damaged. Please replace the CD player.

R-11: Check again after replacing the AVN head unit 

Fig 9: AVN Head Unit Connector Terminals
G10368772Courtesy of HYUNDAI MOTOR AMERICA

OK 

NG 

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

    NG 

    • Check the vehicle wiring

    OK 

    • Go to step 2
  2. Check the illumination (-) input signal using the oscilloscope
    Tester Connection Condition Specified Condition
    CON-A17 ↔ 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-12: Check the mic input condition. 

Fig 10: Mic Input Connector Terminals
G10368773Courtesy of HYUNDAI MOTOR AMERICA
Tester Connection Condition Specified Condition
CON-B10 ↔ MIC+ Always Below 1Ω
CON-B22 ↔ MIC- Always Below 1Ω
CON-B22 ↔ GND Always OPEN

NG 

OK 

  1. Test again after replacing the mic

R-13: Test after replacing the AVN head unit 

Fig 11: AVN Head Unit Connector Terminals (1 Of 2)
G10368774Courtesy of HYUNDAI MOTOR AMERICA
Fig 12: AVN Head Unit Connector Terminals (2 Of 2)
G10368775Courtesy of HYUNDAI MOTOR AMERICA

OK 

NG 

  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-B7 ↔ CON-D4 Always Below 1Ω
    CON-B8 ↔ CON-D1 Always Below 1Ω
    CON-B9 ↔ CON-D7 Always Below 1Ω
    CON-B19 ↔ COND10 Always Below 1Ω
    CON-B20 ↔ CON-D3 Always Below 1Ω
    CON-B21 ↔ CON-D2 Always Below 1Ω
    CON-B23 ↔ CON-D12 Always Below 1Ω

    NG 

    • Check the vehicle wiring

    OK 

    • Go to step 3
  3. Check again after replacing the external input device with another one.

R-14: 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

R-15: Replace the AVN monitor 

  1. Check the same problems after replacing the AVN monitor

    OK 

    • If AVN is normal operating, replace the AVN monitor.

    NG 

    • Check the vehicle wiring and LVDS cable. (Refer to removal procedure. R-16)

R-16: Check the power connection of AVN monitor 

  1. Remove the AVN monitor.
  2. Check the specified condition of terminal.
    Fig 13: Identifying AVN Monitor Connector Terminals
    G10368776Courtesy of HYUNDAI MOTOR AMERICA

    OK

    Tester Connection Condition Specified Condition
    CON-H1 ↔ GND Always 9~16 V
    CON-H5 ↔ GND Always 9~16 V
    CON-H9 ↔ GND Always Below 1Ω

    NG

    • Check again after repairing or replacing the Cable harness or Connector
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