Audio/Video/Navigation (AVN) System: Troubleshooting

Symptom	Suspected area	Repairment
Pressing power switch does not turn on system	AVN head unit receiver power source circuit	R-2
Pressing power switch does not turn on system	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 whth 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
BLUETOOTH voice recognition fault	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
AUX connection error	Check the multimedia connector	R-13
AVN monitor error	AVN monitor unit	R-15
AVN monitor error	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.

Remove the AVN head unit.

Check the specified condition of terminal.

Fig 1: Identifying AVN Head Unit Connectors

Courtesy of HYUNDAI MOTOR AMERICA

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

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

Remove the external amplifier

Check the specified condition of terminal.

Fig 2: Identifying External Amplifier Power Cable Connectors

Courtesy of HYUNDAI MOTOR AMERICA

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

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

R-6: Check the external amplifier CAN interface

Remove the AVN head Unit.
Remove the external amplifier

Check the specified condition of terminal.

Fig 3: Identifying External Amplifier CAN Interface Connectors (A And B)

Courtesy of HYUNDAI MOTOR AMERICA

Fig 4: Identifying External Amplifier CAN Interface Connectors (E, F And G)

Courtesy of HYUNDAI MOTOR AMERICA

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

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

R-7: Check the external amplifier S/PDIF connection

Remove the audio head unit.
Remove the external amplifier

Check the specified condition of terminal.

Fig 5: Identifying External Amplifier S/PDIF Connection Connectors (1 Of 2)

Courtesy of HYUNDAI MOTOR AMERICA

Fig 6: Identifying External Amplifier S/PDIF Connection Connectors (2 Of 2)

Courtesy of HYUNDAI MOTOR AMERICA

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

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

R-8: Check the wiring harness and connector

Remove the AVN head unit

Remove the external amplifier

Fig 7: Identifying Wiring Harness And Connectors (1 Of 2)

Courtesy of HYUNDAI MOTOR AMERICA

Fig 8: Identifying Wiring Harness And Connectors (2 Of 2)

Courtesy 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

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 (Refer to Troubleshooting ) ("Antenna - Glass antenna circuit inspection")
  NG
  - Check the antenna amp input voltage (Refer to Troubleshooting ) ("Antenna - Antenna cable")
  OK
  - Go to step 4
4. Check the feeder cable connection (Refer to Troubleshooting ) ("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 Troubleshooting ) ("Antenna - Glass antenna test")
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: Identifying AVN Head Unit Connectors

Courtesy of HYUNDAI MOTOR AMERICA

Remove the audio head unit

Go to step 1

Check the input signal of Illumination (+)

Tester Connection	Condition	Specified Condition
CON-A8 ↔ GND	Always	9~16 V

Check the vehicle wiring

Go to step 2

Check the illumination (-) input signal using the oscilloscope

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

Check the vehicle wiring and cluster PWM output.

Go to step 3

Check the vehicle illumination control unit.

R-12: Check the mic input condition.

Fig 10: Identifying Mic Input Connectors

Courtesy 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

Check the vehicle wiring and mic

Go to step 1

Test again after replacing the mic

R-13: Test after replacing the AVN head unit

Fig 11: Identifying AVN Head Unit Connectors (1 Of 2)

Courtesy of HYUNDAI MOTOR AMERICA

Fig 12: Identifying AVN Head Unit Connectors (2 Of 2)

Courtesy of HYUNDAI MOTOR AMERICA

Replace the AVN head unit

Go to step 1

Test after replacing the multimedia jack.
OK
- Replace the multimedia jack.
NG
- Go to step 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

Check the vehicle wiring

Go to step 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 R-16)

R-16: Check the power connection of AVN monitor

Remove the AVN monitor.

Check the specified condition of terminal.

Fig 13: Identifying AVN Monitor Power Connection Connectors

Courtesy of HYUNDAI MOTOR AMERICA

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

Check again after repairing or replacing the Cable harness or Connector