Signal Specification
All values indicated below are between respective connection in column 1 and #A9 (#39 on the breakout box). If this is not the case, it is indicated within brackets.
Connector A (16-pin) corresponds to #31 - #46 on the breakout box.
Connector B (22-pin to transmission) corresponds to #1 - #22 on the breakout box.
NOTE:
Connect the breakout box and check the ground connections before starting to measure.
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | battery voltage | F = | frequency in Hertz (Hz) |
| Ulow = | voltage approximately 0 V | % duty = | duty cycle (pulse ratio) in percent (%) |
| t = | time in milliseconds (ms) |
Connector A
CONNECTOR A, #A31 - #A46
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Miscellaneous |
|---|---|---|---|---|---|
| #31 | #A1 | Power supply | Ubat | 30-feed from fuse | |
| #32 | #A2 | - | - | - | |
| #33 | #A3 | - | - | - | |
| #34 | #A4 | - | - | - | |
| #35 | #A5 | Signal, start lockout | Ulow when start is permitted | Signal to engine control module (ECM) if start is permitted | |
| #36 | #A6 | Control module communication cable CAN_L | During communication the voltage is 1.5-2.5 V | - | |
| #37 | #A7 | Communication cable LIN gear selector module (GSM) | During communication the voltage is 0 V - Ubat | - | |
| #38 | #A8 | Communication cable K-line | - | For serial communication | |
| #39 | #A9 | Power ground | U = Ulow | - | |
| #40 | #A10 | - | - | - | |
| #41 | #A11 | Power supply | U = Ubat | 15-feed from ignition via fuse | |
| #42 | #A12 | - | - | - | |
| #43 | #A13 | Signal, Shift lock solenoid for gear selector module (GSM) | Shift lock U = Ubat when the solenoid is not activated Ulow when the solenoid is activated |
Solenoid not activated = gear selector locked Solenoid activated = gear selector can be moved |
|
| #44 | #A14 | Communication cable, control module CAN_H | During communication the voltage is 2.0-3.5 V | - | |
| #45 | #A15 | - | - | - | |
| #46 | #A16 | Voltage feed, gear selector module (GSM) | U = Ubat | - | |
Connector B
CONNECTOR B, #B1 - #B22
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Miscellaneous |
|---|---|---|---|---|---|
| #1 | #B1 | Signal ground, linear pressure solenoid SLT | U = Ulow | - | |
| #2 | #B2 | Control signal, shift solenoid S2 | Activated: U=0 - 2 A V below Ubat Not activated: Ulow |
The solenoid receives voltage when transmission control module (TCM) activates it during engine braking in 1st gear. | |
| #3 | #B3 | Control signal, linear pressure solenoid SLT | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #4 | #B4 | Signal ground Lock-up solenoid SLU | U = Ulow | - | |
| #5 | #B5 | Control signal, shift solenoid S1 | Activated: U=0 - 2 A V below Ubat Not activated: Ulow |
The solenoid receives voltage when transmission control module (TCM) activates it during engine braking in 1st gear. | |
| #6 | #B6 | - | - | - | |
| #7 | #B7 | Signal ground, oil temperature sensor | Ulow | Ground | |
| #8 | #B8 | Signal, oil temperature sensor | Cold transmission (+20°C): U = 2.4 A V Warm transmission (+100°C): U=0.3 - 0.5 A V |
U decreases with increasing temperature. | |
| #9 | #B9 | Control signal, lock-up solenoid SLU | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #10 | #B10 | Signal ground, linear pressure solenoid SLC1 | U = Ulow | - | |
| # 11 |
#B11 | Control signal, lock-up solenoid SLC1 | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #12 | #B12 | Voltage feed, rpm sensor (VSS) | Power supply, rpm sensor ≈ 1-3 V < Ubat |
- | |
| #13 | #B13 | Signal, rpm sensor | Tooth against sensor: 14 mA Cover against sensor: 6 mA |
When the toothed wheel rotates, the sensor generates a pulsating current (square wave) with fixed pulse ratio, the frequency increases with the speed. | |
| #14 | #B14 | Control signal, linear pressure solenoid SLC3 | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #15 | #B15 | - | - | - | |
| #16 | #B16 | Signal ground, linear pressure solenoid SLB1 | U = Ulow | - | |
| #17 | #B17 | Control signal, linear pressure solenoid SLC2 | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #18 | #B18 | Signal ground, linear pressure solenoid SLC2 | U = Ulow | - | |
| #19 | #B19 | Power supply, vehicle speed sensor (VSS) | Power supply, speed sensor ≈ 1-3 V < Ubat | - | |
| #20 | #B20 | Signal, gearbox output speed sensor signal | Tooth against sensor: 14 mA Cover against sensor: 6 mA |
When the toothed wheel rotates, the sensor generates a pulsating current (square wave) with fixed pulse ratio, the frequency increases with the speed. | |
| #21 | #B21 | Control signal, linear pressure solenoid SLB1 | f = 300 Hz. Frequency is constant, regardless of driving conditions. It is the signal's duty cycle that is modified when the system pressure is adapted. | The solenoid receives voltage when transmission control module (TCM) activates it. | |
| #22 | #B22 | Signal ground, linear pressure solenoid SLC3 | U = Ulow | - | |