Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2010 Volvo C30 R-Design, AutomaticFACTORY OEM SERVICE PROCEDURE
Signal Specification
All values listed below are between the terminal in column 1 and terminal #A9 (#39 on the breakout box), 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 A (16-pin) corresponds to terminals #31 - #46 on the breakout box
- Connector B (4-pin) corresponds to terminals #51 - #54 on the breakout box
- Connector C (22-pin on transmission side) corresponds to terminals #1 - #22 on the breakout box.
| Connector A, terminals #A1-#A16. The following values are measured between the relevant terminal in column 1 and #A9 (#39 on the breakout box) unless otherwise stated.
NOTE:
Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V |
CONNECTOR A, TERMINALS #A31 - #A46
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #31 | #A1 | Power supply | Ubat | 30-supply from the fuse | |
| #32 | #A2 | - | - | - | |
| #33 | #A3 | - | - | - | |
| #34 | #A4 | - | - | - | |
| #35 | #A5 | Signal, start inhibiting system | Ulow when starting is permitted | Signal to the engine control module (ECM) about permitted start | |
| #36 | #A6 | Control module communication cable CAN_L | The voltage is 1.5-2.5 V during communication | - | |
| #37 | #A7 | Communication cable LIN gear selector module (GSM) | During communication the voltage is 0 V - Ubat | - | |
| #38 | #A8 | Control module communication cable CAN_H | The voltage is 2.0-3.5 V during communication | - | |
| #39 | #A9 | Power ground | U = Ulow | - | |
| #40 | #A10 | - | - | - | |
| #41 | #A11 | Power supply | U = Ubat | 15-supply from ignition switch via fuse | |
| #42 | #A12 | - | - | - | |
| #43 | #A13 | Signal, shift inhibitor Shift-lock solenoid to gear selector module (GSM) | Shift inhibitor U= Ubat when the solenoid is not activated U= Ulow when the solenoid is activated |
Solenoid not activated = gear selector locked Solenoid activated = gear selector can be moved |
|
| #44 | #A14 | Communication cable C-line | - | For serial communication | |
| #45 | #A15 | - | - | - | |
| #46 | #A16 | Power supply, gear selector module (GSM) | U = Ubat | - | |
| Connector B, terminals #A17-#A20 The following values are measured between the relevant terminal in column 1 and #A9 (#39 on the breakout box) unless otherwise stated.
NOTE:
Check the ground terminals before starting to take readings with the breakout box. U = DC voltage in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V |
CONNECTOR B, TERMINALS #B1-#B4
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #51 | #B1 | Signal, transmission output speed sensor | Tooth against sensor: 14 mA Cover against sensor: 7 mA |
The sensor generates a pulsed current (quadratic wave) with a fixed pulse ratio when the pulse wheel rotates. Frequency increases with speed. | |
| #52 | #B2 | Power supply, transmission output speed sensor | Power supply, transmission output speed sensor ≈ 1-3 V < Ubat | - | |
| #53 | #B3 | Signal, transmission input speed sensor | Tooth against sensor: 14 mA Cover against sensor: 7 mA |
The sensor generates a pulsed current (quadratic wave) with a fixed pulse ratio when the pulse wheel rotates. Frequency increases with speed. | |
| #54 | #B4 | Power supply, transmission input speed sensor | Power supply, transmission input speed sensor ≈ 1-3 V < Ubat | - | |
| Connector B, terminals #A17-#A20 The following values are measured between the relevant terminal in column 1 and #A9 (#39 on the breakout box) unless otherwise stated.
NOTE:
Check the ground terminals before starting to take readings with the breakout box. U = DC in volts (V) Ubat = battery voltage in volts (V) Ulow = Voltage close to 0 V |
CONNECTOR C, TERMINALS #C1- #C22
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Other |
|---|---|---|---|---|---|
| #1 | #C1 | Control signal, shift solenoid S1 | Activated: U= 0-2 V below Ubat Not activated: Ulow |
The solenoid is supplied with voltage when activated by the transmission control module (TCM) in 1st gear | |
| #2 | #C2 | Control signal, shift solenoid S2 | Activated: U= 0-2 V below Ubat Not activated: Ulow |
The solenoid is supplied with voltage when activated by the transmission control module (TCM) in 1st and 5th gears | |
| #3 | #C3 | Control signal, linear pressure solenoid SLT | f= 300 Hz. The frequency is constant, irrespective of driving conditions. The signal duty cycle is modified when line pressure is adapted. | The solenoid receives power when it is activated by the transmission control module (TCM). | |
| #4 | #C4 | - | - | - | |
| #5 | #C5 | - | - | - | |
| #6 | #C6 | Signal ground, linear pressure solenoid SLT | U = Ulow | - | |
| #7 | #C7 | Signal ground, Lock-up solenoid SLU | U = Ulow | - | |
| #8 | #C8 | - | - | - | |
| #9 | #C9 | Control signal, lock-up solenoid SLU | f= 300 Hz. The frequency is constant, irrespective of driving conditions. The signal duty cycle is modified when line pressure is adapted. | The solenoid receives power when it is activated by the transmission control module (TCM). | |
| #10 | #C10 | Signal ground, linear pressure solenoid SLS | U = Ulow | - | |
| #11 | #C11 | - | - | - | |
| #12 | #C12 | - | - | - | |
| #13 | #C13 | Signal ground, oil temperature sensor | Ulow | Ground | |
| #14 | #C14 | Signal, oil temperature sensor | Cold transmission (+20°C): U= 2.4 Hot transmission (+100°C): U= 0.3-0.5 V |
U decreases with increasing temperature | |
| #15 | #C15 | - | - | - | |
| #16 | #C16 | 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 | The solenoid receives power when it is activated by the transmission control module (TCM). | |
| #17 | #C17 | Control signal, shift solenoid S3 | Activated: U= 0-2 V below Ubat Not activated: Ulow |
The solenoid is supplied with voltage when activated by the transmission control module (TCM) in 1st, 2nd and 3rd gears | |
| #18 | #C18 | - | - | - | |
| #19 | #C19 | - | - | - | |
| #20 | #C20 | - | - | - | |
| #21 | #C21 | Control signal, shift solenoid S5 | Activated: U= 0-2 V below Ubat Not activated: Ulow |
The solenoid is supplied with voltage when it is activated by the transmission control module (TCM) in position R and when shifting from 2nd to 3rd gear | |
| #22 | #C22 | Control signal, shift solenoid S4 | Activated: U= 0-2 V below Ubat Not activated: Ulow |
The solenoid receives voltage when activated by the transmission control module (TCM) in 3rd, 4th and 5th gears | |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.