Connectors, Transmission control module (TCM)
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
All values listed below are between the terminal in column 1 and terminal #15 (power ground), unless otherwise indicated in brackets.
NOTE:
Connect the breakout box and check the ground terminals before taking readings.
| 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) as a percentage (%) |
| t = | time in milliseconds (ms) | - | - |
Connector Transmission control module (TCM) terminals #1- #42
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Other |
|---|---|---|---|---|
| #1 | #1 | Power supply | U bat | - |
| #2 | #2 | Control signal, line pressure solenoid SLT | f=300 Hz Frequency is constant, independent of driving conditions. The signal duty cycle is modified when the line pressure is adapted | - |
| #3 | #3 | Control signal, lock-up solenoid SLU | F = 300 Hz The frequency is constant, irrespective of driving conditions. The signal duty cycle is modified when the line pressure is adapted | - |
| #4 | #4 | Control signal, line pressure solenoid SLS | f = 300 HZ The frequency is constant, irrespective of driving conditions. The signal duty cycle is modified when line pressure is adapted. | - |
| #5 | #5 | Control signal, shift solenoid S4 | Activated: U=0-2 V below U bat Not activated: U low |
The solenoid receives voltage when activated by the control module in 3rd, 4th and 5th gears |
| #6 | #6 | Control signal, shift solenoid S5 | Activated: U=0-2 V below U bat Not activated: U low |
The solenoid is supplied with voltage when it is activated by the control module when shifting between 2nd, 3rd and 4th gears. And when back-up gear is selected. |
| #7 | #7 | Signal, gear-shift position sensor A | Gear selector position P, R, 4, 3: U=0-0.5 V Other positions: U=0-2 V below U bat |
The signal is grounded in positions P, R, 4, and 3 |
| #8 | #8 | Signal, gear-shift position sensor C | Gear selector positions D, 4, 3 and L: U=0-0.5 V Other positions: U=0-2 V below U bat |
The signal is grounded in positions D, 4, 3 and L |
| #9 | #9 | Power supply, speed sensor (SP1) | U≈1 V <U bat | - |
| #10 | #10 | Signal, vehicle speed sensor (SP1) | 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 |
| #11 | #11 | Power supply, engine speed (RPM) sensor (SP2) | U≈1 V <U bat | - |
| #12 | #12 | Signal, engine speed (RPM) sensor (SP2) | 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 |
| #13 | #13 | Diagnostic lead Volvo on-board diagnostic (OBD) system |
U=0-2 V below U bat Other values apply if the fault-tracing instrument is connected to the data link connector (DLC) |
- |
| #14 | #14 | KL 15 Ignition switch voltage | U bat | - |
| #15 | #15 | KL 31 Power ground | U low | - |
| #22 | #22 | Signal, gear-shift position sensor PA | Gear selector position P, N, 4, L: U=0-0.5 V Other positions: U=0-2 V below Ubat |
The signal is grounded in positions P, N, 4, and L |
| #23 | #23 | Signal, kickdown switch (KD) | Open: U=0-2 V below U bat Closed: U low |
The kickdown switch (KD) is closed on kickdown and the signal is grounded |
| #24 | #24 | Signal, oil temperature sensor (OT) | Cold transmission (+20°C): U=2.4 V Hot transmission (+100°C): U=0.3-0.5 V |
U decreases with increasing temperature |
| #25 | #25 | Control signal, automatic transmission warning lamp | Lamp lit: U = 0-2 V Lamp not lit: U bat |
If the warning lamp flashes the value changes |
| #26 | #26 | Control module communication cable CAN L | U = 2-3 V average voltage | Between the transmission control module (TCM) and h engine control module (ECM) |
| #27 | #27 | Control module communication cable CAN H | U = 2-3 V average voltage | Between the transmission control module (TCM) and engine control module (ECM) |
| #30 | #30 | Signal ground, throttle solenoid (SLTG) | U low | - |
| #31 | #31 | Signal ground, lock-up solenoid (SLUG) | U low | - |
| #32 | #32 | Signal ground, line pressure solenoid (SLSG) | U low | - |
| #33 | #33 | Control signal, shift solenoid S1 | Activated: U=0-2 V below U bat Not activated: U low |
The solenoid is supplied with voltage when activated by the control module in 1st gear |
| #34 | #34 | Control signal, shift solenoid S2 | Activated: U=0-2 V below U bat Not activated: U low |
The solenoid is supplied with voltage when activated by the control module in 1st and 5th gears |
| #35 | #35 | Control signal, shift solenoid S3 | Activated: U=0-2 V below U bat Not activated: U low |
The solenoid is supplied with voltage when activated by the control module in 1st, 2nd and 3rd gears |
| #36 | #36 | Signal, gear-shift position sensor B | Gear selector position R, N, D, 3: U=0-0.5 V Other positions: U=0-2 V below U bat |
Signal grounded in positions R, N, D, 3 |
| #37 | #37 | Signal, Winter mode selector | Activated: U low Not activated: U=0-2 V below U bat |
The signal is grounded when Winter mode switch is pressed |
| #38 | #38 | Stop (brake) light switch signal | Open: U••= U low Closed: U = 0-2 V below U bat |
The stop lamp switch closes during braking |
| #39 | #39 | Signal ground oil temperature sensor | U low | Ground |