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Hyundai Equus: Telemetics Unit (TMU) Components and Components Location
| Component |

| Connector Pin Information |
| No. | Description | No. | Description |
| 1 | Ground | 17 | Battery 2 |
| 2 | Ground | 18 | Battery 1 |
| 3 | - | 19 | IGN 1 |
| 4 | Keypad ground | 20 | ACC |
| 5 | MIC output - | 21 | Airbag |
| 6 | MIC output + | 22 | Keypad input |
| 7 | - | 23 | - |
| 8 | RS422 shield | 24 | MIC shield |
| 9 | RS422 Rx - | 25 | RS422 Tx - |
| 10 | RS422 Rx + | 26 | RS422 Tx + |
| 11 | - | 27 | - |
| 12 | C CAN - | 28 | MIC input |
| 13 | C CAN + | 29 | MIC ground |
| 14 | - | 30 | - |
| 15 | Audio output - | 31 | M CAN - |
| 16 | Audio output + | 32 | M CAN + |
Description and Operation
Telemetics Unit (TMU) Repair proceduresSteering wheel audio control
The steering wheel may incorporate the audio control buttons.
CAUTION
Do not operate audio remote control buttons simultaneously.
VOLUME (VOL + / - ) (1)
Press the up button (+) to increase ...
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