Integrated Head Unit: Notes
WARNING: This page is about a different car, the 2006 Land Rover Range Rover Sport. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The base level audio system IHU comprises a single disc compact disc (CD) player and an integral amplifier, all other functions of the unit are comparable with the 6 disc unit.
The audio system is based around an Integrated Head Unit (IHU) which communicates on the Media Orientated System Transport (MOST) ring and the medium speed controller area network (CAN) bus.
The IHU contains the following functionality:
- Radio tuner.
- compact disc (CD) player (Six disc in dash changer).
- Integrated telephone control.
- Auxiliary input (for any device featuring a 3.5mm jack plug output).
The IHU (Integrated Head Unit) unit also integrates with the navigation system, this requires the addition of a navigation computer, touch screen display and global positioning system (GPS) antenna.
The IHU is woken up by controller area network (CAN) bus activity and is not woken up from the ignition aux position.
The IHU is the Bus Master for the MOST system and contains the timing master for the MOST system.
CONNECTOR C1354 PINOUT TABLE FOR HIGH LINE AUDIO
| Pin No | Description | Input/Output |
|---|---|---|
| 1 | ground (GND) | - |
| 2 | Not used | - |
| 3 | Rear left-hand (LH) door speakers + | Output + |
| 4 | Rear left-hand (LH) door speakers - | Output - |
| 5 | Rear right-hand (RH) door speakers + | Output + |
| 6 | Rear right-hand (RH) door speakers - | Output - |
| 7 | Steering wheel switch ground | Output - |
| 8 | Infotainment relay switch | Output |
| 9 | controller area network (CAN) high | Input/Output |
| 10 | controller area network (CAN) low | Input/Output |
| 11 | battery positive voltage (B+) | Input |
| 12 | Antenna power | Output |
| 13 | Front left-hand (LH) door speakers - | Output - |
| 14 | Front left-hand (LH) door speakers + | Output + |
| 15 | Front right-hand (RH) door speakers + | Output + |
| 16 | Front right-hand (RH) door speakers - | Output - |
| 17 | Not used | - |
| 18 | Steering wheel switch reference voltage | Output |
| 19 | controller area network (CAN) high | Input/Output |
| 20 | controller area network (CAN) low | Input/Output |
CONNECTOR C2115 PINOUT TABLE
| Pin No | Description | Input/Output |
|---|---|---|
| 1 | Not used | - |
| 2 | Not used | - |
| 3 | Phone + | Output + |
| 4 | Not used | - |
| 5 | Phone - | Output - |
| 6 | Aux Screen | - |
| 7 | Right aux Jack plug input | Input + |
| 8 | Left aux Jack plug input | Input + |
| 9 | Not used | - |
| 10 | Not used | - |
| 11 | Not used | - |
| 12 | Audio ground (GND) | - |