Check the audio remote control switch(A) for resistance between No. 3 and No. 4 terminals in each switch position.
Courtesy of HYUNDAI MOTOR CO. RESISTANCE REFERENCE CHART
| Switch |
Connector terminal |
Resistance
(±5%) |
| Volume Up |
2 - 4 |
120Ω |
| Volume Down |
2 - 4 |
300Ω |
| Seek Up |
2 - 4 |
440Ω |
| Seek Down |
2 - 4 |
900Ω |