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
|
AVN 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
|
R-4
R-6
R-8
|
EXT. AMP power source
|
R-5
|
Check the wiring between speakers and H/U
|
R-11
|
Noise occurs
|
Proceed to "noise occurs"
|
R-10
|
Radio broadcast cannot be received
|
Proceed to "radio broadcast cannot be received (poor reception)"
|
R-9
|
Disc cannot be inserted or is ejected right after insertion
|
Radio receiver power source circuit
|
R-1
|
Disc cannot be ejected.
|
Radio receiver power source circuit
|
R-1
|
Illumination for radio receiver does not come on whth light
control switch on.
|
Illumination circuit
|
R-11
|
Radio receiver power source circuit
|
R-1
|
Display does not dim with light control switch turned on
|
Illumination circuit
|
R-11
|
Power does not turn off
|
AVN H/U
|
R-1
|
BLUETOOTH voice recongnition fault
|
AVN H/U
|
R-1
|
MIC input
|
R-12
|
USB I/F error
|
AVN H/U
|
R-1
|
USB device fault
|
R-13
|
Check the multimedia connector
|
R-13
|
iPod I/F error
|
AVN H/U
|
R-1
|
iPod fault
|
R-13
|
Check the multimedia connector
|
R-13
|
AUX connection error
|
AVN H/U
|
R-1
|
Check the multimedia connector
|
R-13
|
R-1 : Replace the AVN head unit
|
1. |
Check the same problems after replaceing 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.
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 "Audio remote control - 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 replaceing 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.
OK
|
Tester Connection
|
Condition
|
Specified Condition
|
CON-C1 ↔ GND
|
Always
|
9~16 V
|
CON-C7 ↔ GND
|
Always
|
9~16 V
|
CON-C17 ↔ 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.
Tester Connection
|
Condition
|
Specified Condition
|
CON-B1 ↔ CON-C5
|
Always
|
Below 1Ω
|
CON-B1 ↔ GND
CON-C5 ↔ GND
|
Always
|
OPEN
|
CON-B13 ↔ CON-C6
|
Always
|
Below 1Ω
|
CON-B13 ↔ GND
CON-C6 ↔ 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.
Tester Connection
|
Condition
|
Specified Condition
|
CON-A6 ↔ CON-C18
|
Always
|
Below 1Ω
|
CON-A6 ↔ GND
CON-C1 ↔ GND
|
Always
|
OPEN
|
CON-A15 ↔ CON-C1
|
Always
|
Below 1Ω
|
CON-A15 ↔ GND
CON-F19 ↔ 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
Tester Connection
|
Condition
|
Sepcified Condition
|
CON-E1↔Rear Door Right (+)
|
Always
|
Below 1Ω
|
CON-E7↔Rear Door Right (-)
|
Always
|
Below 1Ω
|
CON-E2↔Rear Door left (+)
|
Always
|
Below 1Ω
|
CON-E8↔Rear Door left (-)
|
Always
|
Below 1Ω
|
CON-E3↔Tweeter-Front Right (+)
|
Always
|
Below 1Ω
|
CON-E9↔Tweeter-Front Right (-)
|
Always
|
Below 1Ω
|
CON-E4↔Tweeter-Front Left (+)
|
Always
|
Below 1Ω
|
CON-E10↔Tweeter-Front Left (-)
|
Always
|
Below 1Ω
|
CON-E5↔Front Door Right (+)
|
Always
|
Below 1Ω
|
CON-E11↔Front Door Right (-)
|
Always
|
Below 1Ω
|
CON-E6↔Front Door Left (+)
|
Always
|
Below 1Ω
|
CON-E12↔Front Door Left (-)
|
Always
|
Below 1Ω
|
CON-C4,8,9,10,17,21,22,23 /
D1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16
|
Always
|
OPEN
|
NG
|
▶ Check again after repairing or replacing the Cable harness
or Connector.
|
|
R-9: Test after replacing the AVN head unit
OK
|
▶ Replace the AVN head unit
|
|
1. |
Check the input signal of illumination (+)
Tester Connection
|
Condition
|
Specified Condition
|
CON-A8 ↔ GND
|
Always
|
9~16 V
|
NG
|
▶ Check the vehicle wiring
|
|
|
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.
|
|
|
3. |
Check the vehicle illumination control unit.
|
R-10 : Check the mic input condition.
Tester Connection
|
Condition
|
Specified Condition
|
CON-B10 ↔ MIC+
|
Always
|
Below 1Ω
|
CON-B22 ↔ MIC-
|
Always
|
Below 1Ω
|
CON-B22 ↔ GND
|
Always
|
OPEN
|
NG
|
▶ Check the vehicle wiring and B/T mic
|
|
1. |
Test again after replacing the B/T mic
|
R-11 : Test after replacing the AVN head unit
OK
|
▶ Replace the AVN head unit
|
|
1. |
Test after replacing the multimedia jack.
OK
|
▶ Replace the multimedia jack .
|
|
|
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
|
|
|
3. |
Check again after replacing the external input device with another
one.
|
R-12 : Disc cannot be inserted or ejected right after insertion
|
1. |
Is the ignition key at ACC or 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
|
▶ Loock for foreign matters in CD player. Such as paper lables,
coins etc.
|
|
|
3. |
If CD does not eject, don't try removing it. The player may be
damaged. Please replace the CD player.
|
R-13 : Sound sometimes skips when parking
|
1. |
Is CD face scratched or dirty?
|
1.
Install the multimedia jack.
2.
Connect the multimedia jack connector.
3.
Install the console upper cover.
...
| |
Hyundai Elantra MD/UD: Troubleshooting
