Signal description. Transmission control module (TCM)
All values contained below are between the terminal in column 1 and #A53 (signal ground), unless otherwise indicated in brackets.
Note. It is important to connect the breakout box and check ground terminals before taking readings.
| U = | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
|---|---|---|---|
| U bat = | Battery voltage | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | %duty = | Duty cycle (pulse ratio) as a percentage (%) |
| T = | Time in milliseconds (ms) |
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #A35 | #A35 | Power supply | Ubat | Supply from fuse 16 in the integrated relay/fusebox in the engine compartment | |
| #A37 | #A37 | Signal, oil temperature sensor | Cold transmission (+20°C): U=2.4 V Hot transmission (+100°C): U=0.3-0.5 V | U decreases with increasing temperature | |
| #A39 | #A39 | Signal, vehicle speed sensor (VSS) | Tooth against sensor: 14 mA Cover against sensor: 7 mA | The sensor generates a pulsed signal (quadratic wave) with fixed pulse ratio when the pulse wheel rotates. Frequency increases with speed | |
| #A41 | #A41 | Signal, transmission speed sensor | Tooth against sensor: 14 mA Cover against sensor: 7 mA | The sensor generates a pulsed signal (quadratic wave) with fixed pulse ratio when the pulse wheel rotates. Frequency increases with speed | |
| #A45 | #A45 | Signal, gear-shift position sensor C | Gear selector position D, 3, L: U=0-0.5 V Other positions: U=0-2 V below Ubat | Signal grounded in positions D, 3, L | |
| #46 | #A46 | Signal, gear-shift position sensor A | Gear selector position P, R, 3, L: U=0-0.5 V Other positions: U=0-2 V below Ubat | Signal grounded in positions N, D | |
| #A50 | #A50 | Control signal, shift solenoid S1 | Activated: U=0-2 V below Ubat Not activated: Ulow | The solenoid receives a signal when activated by the transmission control module (TCM) it is in 2nd and 3rd gears | |
| #A51 | #A51 | Control signal, lock-up solenoid SL | Activated: U=0-2 V below Ubat Not activated: Ulow | The solenoid receives voltage when it is activated by the transmission control module (TCM) | |
| #A52 | #A52 | Control signal, line pressure solenoid STH | U=1.6 V | Voltage decreases with increasing throttle opening | |
| #A53 | #A53 | Signal ground (SG) | Ulow | ||
| #A55 | #A55 | Signal ground oil temperature sensor (OTG) | Ulow | Ground | |
| #A57 | #A57 | Power supply, vehicle speed sensor (VSS) | Uapprox.1 V | ||
| #A59 | #A59 | Power supply, engine speed (RPM) sensor | Uapprox.1 V | ||
| #B3 | #A63 | Signal, gear-shift position sensor PA | Gear selector position P, N, 3: U=0-0.5 V Other positions: U=0-2 V below Ubat | Signal grounded in positions P, N, 3 | |
| #B4 | #A64 | Signal, gear-shift position sensor B | Gear selector position R, N, D, 3, L: U=0-0.5 V Other positions: U=0-2 V below Ubat | Signal grounded in positions R, N, D, 3 | |
| #B8 | #A68 | Control signal, shift solenoid S2 | Activated: U=0-2 V below Ubat Not activated: Ulow | The solenoid receives voltage when activated by the transmission control module (TCM) in 1st and 2nd gears | |
| #B10 | #A70 | Signal ground, line pressure solenoid STH | F=300 Hz Frequency is constant, independent of driving conditions. The signal duty cycle is modified when line pressure is adapted | ||
Connector A #A35 - #A70
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #B11 | #B1 | Communication cable control modules (Control area network(CAN)) | 2-3 V | Between transmission control module (TCM) and engine control module (ECM) | |
| #B12 | #B2 | Communication cable control modules (Control area network(CAN)) | 2-3 V | Between transmission control module (TCM) and ABS control unit and also central electronic module (CEM) | |
| #B23 | #B13 | Communication cable control modules (Control area network(CAN)) | 2-3 V | Between transmission control module (TCM) and engine control module (ECM) | |
| #B24 | #B14 | Communication cable control modules (Control area network(CAN)) | 2-3 V | Between transmission control module (TCM) and ABS control unit and also central electronic module (CEM) | |
| #B31 | #B21 | Communication cable VULCANO light | Between transmission control module (TCM) and gear selector module (GSM) | ||
| #B32 | #B22 | Diagnosis cable K-link | |||
Connector B #B1 - #B22
See also:
• Bumper rear, replacing
• 9511503