| Integration | Features |
| BMW E39/46/53 (5 gears) | Gears 1-5, D/S/M |
| BMW E39/46/53 (6 gears) | Gears 1-6, D/S/M |
¶ Features
- Instrument cluster communications on CAN1/2/3
- Gear and Mode Display
- Speedometer Speed via CANTCU PWM Output
¶ Connection
- Power on pins 4,5,6
- Ground on pin 1
- CANTCU CAN1/2/3, 500kb/s, pins 9 & 10
- Speedometer Speed input pin 19 on X11175 (26-pin black)
- Various other signals (see pinout)
¶ Pinout
¶ X11175 (26 pin, black)
| Pin | Type | Description /Signal type | Connection /Measuring notes |
|---|---|---|---|
| 1 | M | Ground | Ground connector |
| 2 | A | Signal Battery charge indicator | Engine plug I |
| 3 | A | Engine start signal feedback | Connector Voltage signal, terminal 30h |
| 4 | E | Terminal 30 | Fuse F43 |
| 5 | E | Terminal 15 | Fuse F34 |
| 6 | E | Terminal R | Fuse F10 |
| 7 | E | Signal Locator lighting | Connector, instrument and locator lighting |
| 8 | A | Speedometer (A) output signal | Connector Speedometer (A) output signal |
| 9 | E/A | CAN bus high | Connector CAN bus high |
| 10 | E/A | CAN bus low | Connector CAN bus low |
| 11 | A | Signal, fuel tank sensor (right) | Fuel supply sensor |
| 12 | A | Signal, fuel tank sensor ground (right) | Fuel supply sensor |
| 13 | A | Signal, oil pressure switch | Digital diesel electronics control unit |
| 14 | E/A | K-bus signal | K-bus connector |
| 15 | A | Signal, fuel tank sensor (left) | Electric fuel pump |
| 16 | A | Signal, fuel tank sensor ground (left) | Electric fuel pump |
| 17 | E | Signal Oil level sensor | Engine plug I |
| 18 | Not used | ||
| 19 | E | Signal Processed wheel speed, rear left | Connector Processed wheel speed, rear left |
| 20 | E | Signal Brake fluid level | Connector Brake fluid level |
| 21 | A | Signal, airbag warning LED | Multiple restraint system control unit |
| 22 | A | Signal Warning lamp | ABS/DSC unit |
| 23 | A | Signal Parking brake | Connector Parking brake |
| 24 | M | Signal, brake wear sensor | Front left brake pad sensor |
| 25 | E/A | Diagnosis signal TXD | Connector TXD |
| 26 | A | Signal, coolant level too low | Coolant level switch |
¶ X11176 (18 pin, natural)
| Pin | Type | Description /Signal type | Connection /Measuring notes |
|---|---|---|---|
| 1 | A | Ground, outside temperature | Temperature sensor |
| 2 | A | Signal, outside temperature | Temperature sensor |
| 3 | Not used | ||
| 4 | A | Signal, washer fluid level low | Wash water level switch |
| 5 | A | Signal, cruise control active LED | Cruise control module |
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | Not used | ||
| 9 | Not used | ||
| 10 | Not used | ||
| 11 | Not used | ||
| 12 | A | Signal, driver's seat belt contact | Hall-effect sensor, seat belt buckle |
| 13 | A | Signal, steering column switch | Turn indicator/low beam switch |
| 14 | A | Signal, gong T3 | Gong |
| 15 | Not used | ||
| 16 | Not used | ||
| 17 | Not used | ||
| 18 | Not used |
¶ Extra Features
Extra features are available depending on cluster and car combination. Some of the features might already be sent by the ECU and thus not controllable by CANTCU.
¶ Send ECU Messages
When enabled, full DME (ECU) emulation is sent out from CANTCU. This adds some extra functionality to the cluster.
- RPM
- Coolant Temperature
- Charge light indication (13.4V threshold)
- Check Engine Light control
¶ Cluster Speed Input
Most clusters get the speed signal directly from the left rear wheel. It's possible to use a CANTCU Digital Output in PWM (Frequency) mode to control the speedometer. The necessary signal is a 50% PWM-modulated signal that changes frequency depending on speed. The correct calibration for speed vs frequency is model-specific so different clusters have different calibration values (this can be modified by coding). Our cluster (from a E46 330d facelift) reached 250km/h at 1700Hz. Example configuration below:
