Car Access System, System Overview: E87, E90, E91
WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2006 BMW Z4, 2006 BMW M3, 2006 BMW M Roadster, 2006 BMW M Coupe, and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
Inputs/Outputs
CAR ACCESS SYSTEM INPUTS/OUTPUTS: E87, E90, E91
| Item | Description | Item | Description |
|---|---|---|---|
| 1 | Footwell module (FRM) (connection to PT-CAN only from E90, not E87) | 2 | Junction box electronics (JBE) |
| 3 | Convenience Access (CA) | 4 | Digital engine electronics (DME) or digital diesel electronics (DDE) |
| 5 | Electronic transmission control (EGS) or sequential transmission (SMG) | 6 | Car Access System (CAS) |
| 7 | Terminal 15 wake-up wire output for PT-CAN | 8 | Terminal 30g output |
| 9 | Terminal 15 output - Diagnosis socket - Light module - Relay for fuel heater on vehicles with DDE or relay for injectors on vehicles with DME |
10 | Terminal R output for: - Brake light switch - Clutch switch - Passenger-side seat-occupancy detector |
| 11 | Terminal 15 wake-up wire output for Active Cruise Control (ACC) | 12 | Terminal 50 starter |
| 13 | Electronic steering lock | 14 | Input from telephone control unit, wake-up wire for MOST |
| 15 | Bonnet contact switch | 16 | START/STOP button |
| 17 | Insert compartment for remote control | 18 | Remote control |
| 19 | Brake light switch | 20 | Clutch switch |
| 21 | Central locking button | 22 | Road-speed signal from Dynamic Stability Control (DSC) |
| K-bus | Body bus | K-CAN | Body CAN |
| PT-CAN | Powertrain CAN |
System Circuit Diagram
CAR ACCESS SYSTEM CIRCUIT DIAGRAM: E87, E90, E91
| Item | Description | Item | Description |
|---|---|---|---|
| 1 | Bonnet contact switch | 2 | Car Access System (CAS) |
| 3 | Clutch switch | 4 | Digital engine electronics (DME) or digital diesel electronics (DDE) |
| 5 | Intelligent battery sensor | 6 | Electronic transmission control (EGS) or sequential transmission (SMG) |
| 7 | Starter motor | 8 | Terminal 30g relay in distributor in junction box |
| 9 | Terminal 15 overload-protection relay in distributor in junction box | 10 | Central locking button |
| 11 | Hotel position switch | 12 | Junction box electronics (JBE) in junction box |
| 13 | Junction box | 14 | Remote control |
| 15 | Aerial for remote control signals | 16 | Remote control receiver |
| 17 | Convenience Access (CA) | 18 | Footwell module (FRM) (connection to PT-CAN only from E90, not E87) |
| 19 | Electronic steering lock | 20 | Outside door handle electronics (TAGE) |
| 21 | Telephone control unit (e.g. TCU = Telematic Control Unit) for waking up the MOST on K-CAN | 22 | Relay for fuel heater on vehicles with DDE or relay for injectors on vehicles with DME |
| 23 | Multiple restraint system (MRS) | 24 | START/STOP button |
| 25 | Insert compartment with remote control | 26 | Brake light switch |
| 27 | Road-speed signal from Dynamic Stability Control (DSC) | ||
| Kl. R | Terminal R | Kl. 15 | Terminal 15 |
| Kl. 15 WUP | Terminal 15 wake-up wire | Kl. 30 | Terminal 30 |
| Kl. 30g | Terminal 30g active | Kl. 30L | Terminal 30 load |
| EWS | Signal from electronic immobilizer | START | Signal to indicate end or beginning of starting procedure from DME or DDE |
| K-CAN | Body CAN | K-bus | Body bus |
| MOST | Media Oriented System Transport | PT-CAN | Powertrain CAN |