Test readings, control module connections: Scope: Connector
=greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulses)
CONTROL MODULE CONNECTION TEST READINGS
| Pin No. | Cable color | Component/ function | In/out | Test conditions | Across | Test reading | See |
|---|---|---|---|---|---|---|---|
| 1 | YE/WH | Right brake light, power supply from TWICE to bulb. | Out | Brake pedal pressed. | 1-B- | B+ | Lighting and signalling systems |
| 2 | GY | Central locking system motor for luggage compartment lock, relay. | Out | Not operated | 2-B- | B+ | Doors and locks |
| Activate function with diagnostic tool. | B+ -2 | B+ | |||||
| 3 | BU/YE | Electrically adjustable passenger seat, relay ground. | Out | Ignition ON | 3-B- | approx. 1V | Seats |
| Ignition OFF. Front doors closed. Not operated |
3-B- | B+ | - | ||||
| 4 | BN | Starting relay | Out | Ignition key in position ST. Transponder not OK. |
4-B- | B+ | - |
| Ignition key in position ST. Transponder OK. |
4-B- | <0.5V | |||||
| 5 | BN/WH | Seat sensor, passenger seat. | In | Passenger seat occupied. | 5-21 | <4.2V | Seat belt system |
| Passenger seat unoccupied. | 5-21 | 5V | |||||
| 6 | YE/GY | Locking switch for central locking, centre console. | In | Ignition ON | 6-B- | B+for approx. 0.5 sec. | Doors and locks |
| 7 | YE/BN | Unlocking switch for central locking, centre console. | In | Ignition ON | 7-B- | B+ for approx. 0.5 sec. | Doors and locks |
| 8 | BU/BN | Unlocking with key in passenger door. | In | Ignition ON | B+ -8 | B+ for approx. 0.5 sec. | Doors and locks |
| 9 | BN | Heated rear seat, request. | In | Ignition ON: Heated seat button held down. | 9-B- | B+ | Seats |
| 10 | RD | Glass breakage sensor and tilt sensor, power supply. | Out | Sensor not disconnected. Anti-theft alarm armed. 10-B- |
B+ | => => |
|
| 11 | RD/WH | Switch for unlocking tailgate/boot lid. | In | Ignition ON | 11-B- | B+ for approx. 0.5 sec. | Doors and locks |
| 12 | BK/GN | Door switch, left rear door. | In | Ignition ON: Door closed. | 12-B- | B+ for approx. 0.5 sec. | - |
| 13 | BK | Receiver remote control, ground. | In | Always | B+ -13 | B+ | - |
| 13-B- | <0.5V | ||||||
| 14 | BN | Receiver remote control, signal. | In | Remote control not operated. | 14-B- | + | - |
| Press lock button. | 14-B- | approx. 6V for approx. 0.2 sec. | |||||
| 15 | WH | I-bus ( -) | In/Out | Ignition ON: Bus active | 15-B- | 2-3V | - |
| 16 | YE/GY | Ignition +15, logic. | In | Ignition ON | 16-B- | B+ | TWICE |
| 17 | 3D/5D: BN/RD CONV: RD/BN |
Ignition +B, logic | In | Ignition ON: Key in ignition switch | 17-B- | B+ | TWICE |
| 18 | LHD: BU/RD LHD/CONV: RD/BK RHD: RD/BK |
Seat belt switch, driver's side. | In | Ignition ON: Seat belt on driver's side not buckled | 18-B- | <0.5V | Seat belt system |
| Seat belt buckled | 18-B- | B+ | |||||
| 19 | BU/RD | Tilt sensor signal. | In | Ignition ON | 19-B- | 1.0V | |
| 20 | VT/WH | Central locking motors rear doors, operating current for theft security locking | out | Not operated | B+ -20 | B+ | Doors and locks |
| Lock the car. Then activate function with diagnostic tool. |
20-B- | B+ | |||||
| B+ -20 | <1V | ||||||
| 21 | BN/OG | Seat sensor passenger seat, ground. | Out | Ignition ON | B+ -21 | B+ | Seat belt system |
| 22 | OG | Central locking motors doors, operating current for locking | Out | Not operated | B+ -22 | B+ | Doors and locks |
| Car must be unlocked. Then activate function with diagnostic tool. |
22-B- | B+ | |||||
| B+ -22 | <1V | ||||||
| 23 | BU/WH | Parking light left rear, power supply from switch. | In | Light switch in position for parking light (pos 1). | 23-B- | B+ | Lighting and signalling systems |
| 24 | YE/GN | High -level brake light, power supply from TWICE to bulb. | Out | Brake pedal pressed. | 24-B- | B+ | Lighting and signalling systems |
| 25 | BU/OG | Left brake light, power supply from TWICE to bulb. | Out | Brake pedal pressed. | 25-B- | B+ | Lighting and signalling systems |
| 26 | BU/YE | Central locking motor driver's door, operating current for unlock | Out | Not operated | B+ -26 | B+ | Doors and locks |
| Car must be unlocked. Then activate function with diagnostic tool. |
26-B- | B+ | |||||
| B+ -26 | <1V | ||||||
| 27 | GY/WH | LED, theft security. | Out | Activate function with diagnostics instrument. | B+ -27 | approx. 1.95 V | - |
| 28 | RD/WH | Seat belt warning lamp, ground. | out | Ignition ON Seat belt buckled more than 6 seconds since ignition ON. |
28-B- 28-B- |
<1 V for 6 sec B+ |
Seat belt system |
| 29 | YE | Siren, communication | Out | Ignition ON | 29-B- | B+ | - |
| 30 | No connection | ||||||
| 31 | No connection | ||||||
| 32 | RD/VT | Locking with key in passenger door. | In | Ignition ON | B+ -32 | B+ for approx. 0.5 sec. | Doors and locks |
| 33 | BU/BN | Unlock with key in driver's door. | In | Ignition ON | B+ -33 | B+ for 0.5 sec. | Doors and locks |
| 34 | BK | Tilt sensor, ground | In | Always | B+ -34 34-B- |
B+ <0.5V |
- |
| 35 | BK | Luggage compartment switch | In | Ignition ON: Tailgate closed. | 35-B- | B+ for approx. 0.5 sec. | - |
| Tailgate open. | 35-B- | <0.1V | |||||
| 36 | BK/GN | Door switch; right rear door. | In | Ignition ON: Door closed. | 36-B- | B+ for approx. 0.5 sec. | - |
| Door open. | 36-B- | <0.1V | |||||
| 37 | BK | Signal ground | In | Always | B+ -37 | B+ | TWICE |
| 37-B- | <0.5V | ||||||
| 38 | GN | I-bus (+) | In/Out | Ignition ON: Bus active | 38-B- | 2-3V | - |
| 39 | OG/BK | Immobilizer; code from antenna unit by the ignition lock. | In | Ignition ON | 39-B- | B+ | - |
| Ignition OFF. | B+ -39 | <0.1V | |||||
| 40 | - | No connection | - | - | - | - | - |
| 41 | RD/WH | Bonnet switch | In | Ignition ON: Bonnet closed. | 41-B- | B+ for approx. 0.5 sec. | - |
| Bonnet open. | 41-B- | <0.1V | |||||
| 42 | VT | Central locking motor driver's side, operating current for theft prevention locking. Car must be locked. |
Out | Not operated | B+ -42 | B+ | Doors and locks |
| Activate function with diagnostics instrument. | 42-B- B+ -42 |
B+ <1V |
|||||
| 43 | RD | TWICE, power supply +30. | In | Always +30 | 43-B- | B+ | TWICE |
| B+ -43 | <0.5V | ||||||
| 44 | VT/WH | Central locking system motor luggage compartment, operating current for theft security locking. Car must be locked. |
Out | Not operated | B+ -44 | B+ | Doors and locks |
| Activate function with diagnostics instrument. | 44-B- | B+ | |||||
| B+ -44 | <1V | ||||||
| 45 | GN/YE | Parking light left rear, power supply from TWICE to bulb. | Out | Light switch in position for parking light (pos 1). | 45-B- | B+ | Lighting and signalling systems |
| 46 | GN/WH | Parking light right rear, power supply from TWICE to bulb. | In | Light switch in position for parking light (pos 1). | 46-B- | B+ | Lighting and signalling systems |
| 47 | RD | Central locking system, power supply from fuse. | In | Always +30. | 47-B- | B+ | Doors and locks |
| Activate any central locking function. | B+ -47 | <1V | |||||
| 48 | VT Brake light, power supply from brake light switch. | In | Brake pedal pressed. | 48-B- | B+ | Lighting and signalling systems => |
|
| 49 | BU/YE | Central locking motors rear doors, operating current for unlocking. | Out | Not operated Activate function with diagnostics instrument. |
B+ -49 49-ground |
B+ B+ |
Doors and locks => |
| B+ -49 | <1V | ||||||
| 50 | BK | Antenna unit for immobilizer; power supply. | Out | Ignition ON: Without transponder | 50-B- | B+ for approx. 10 sec. | - |
| Ignition ON: With transponder | 50-B- | B+ for approx. 0.1 sec. | |||||
| 51 | YE | Luggage compartment opening, relay. | Out | Not operated | 51-B- | B+ | Doors and locks |
| Activate function with diagnostic tool. | B+ -51 | < 0.5V | |||||
| 52 | BU/RD | Heated rear seat, relay. | Out | Activate with diagnostic tool. | 52-B- | approx. 1V | Seats |
| Not operated | 52-B- | B+ | |||||
| 53 | No connection | ||||||
| 54 | No connection | ||||||
| 55 | BU/WH | Locking button, driver's door. | In | Ignition ON: Locking button up. | 55-B- | 0V | Doors and locks |
| Locking button down. | 55-B- | B+ for approx. 0.5 sec. | |||||
| 56 | RD/VT | Locking with key in driver's door. | In | Ignition ON Key in door lock in locked position. |
56-B- 56-B- |
8V for approx. 0.5 sec. 0V |
Doors and locks |
| 57 | WH/BK | Glass breakage sensor, ground | In | Always | B+ -57 | B+ | - |
| 57-B- | <0.5V | ||||||
| 58 | GN/GY | Glass breakage sensor, signal | In | Ignition ON | 58-B- | B+ for approx. 0.5 sec. | - |
| 59 | BU/WH | Tailgate switch for disarming anti-theft alarm. | In | Ignition ON: Not operated | 59-B- | B+ for approx. 0.5 sec. | - |
| Turn the key to the unlocked position. | 59-B- | <0.1V | |||||
| 60 | BK/GN | Door switch passenger door, front | In | Ignition ON: Door closed. Door open |
60-B- 60-B- |
B+ for approx. 0.5 sec. <0.1V |
- |
| 61 | GY/GN | Door switch, driver's door. | In | Ignition ON: Door closed. | 61-B- | B+ for approx. 0.5 sec. | - |
| Door open | 61-B- | <0.1V | |||||
| 62 | BK | Central locking system motor, luggage compartment, ground | Out | Not operated | B+ -62 | B+ | Doors and locks |
| 63 | No connection | ||||||
| 64 | No connection | ||||||
| 65 | LHD: RD/BK RHD: BU/RD CONV: GY/WH |
Seat belt switch, passenger side | In | Ignition ON: Seat belt on passenger side not buckled | 65-B- | <0.5V | Seat belt system - |
| Belt buckled | 65-B- | B+ | |||||
| 66 | VT | Central locking motor passenger side front, operating current for theft prevention locking | Out | Not operated | B+ -66 | B+ | Doors and locks - |
| Lock the car. Activate function with diagnostics instrument. |
66-B- | B+ | |||||
| B+ -66 | <1V | ||||||
| 67 | BU/YE | Central locking system motor, luggage compartment, operating current | Out | Not operated | B+ -67 | B+ | Doors and locks - |
| Activate function with diagnostics instrument. | 67-B- | B+ | |||||
| B+ -67 | <1V | ||||||
| 68 | BN/GN | Parking light right rear, power supply from TWICE to bulb. | Out | Light switch in position for parking light (pos 1). | 68-B- | B+ | Lighting and signalling systems - |
| 69 | BU/YE | Central locking motor passenger door front, operating current for unlocking | Out | Not operated | B+ -69 | B+ | Doors and locks - |
| Activate function with diagnostics instrument. | 69-B- | B+ | |||||
| B+ -69 | <1V | ||||||
| 70 | BK | Power ground TWICE | In | Always Operate central locking function |
B+ -70 70-B- |
B+ <0.3V |
TWICE - |