Signal Specification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2013 Volvo C70, 2012 Volvo C70, 2011 Volvo C70, 2010 Volvo C70, and 2009 Volvo C70. 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 #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 0V - 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=300Hz. 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=300Hz. 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=300Hz. 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 | |