Connector A, #A1 - #A30
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
All values given below are between the terminal in column 1 and terminal #20 (signal ground) unless otherwise stated in brackets after the table entry.
NOTE:
It is important to connect the breakout box and check 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 approx. 0 V | % duty = | duty cycle (pulse ratio) as a percentage (%) |
| t = | time in milliseconds (ms) | - | - |
| Terminal. | Signal type | Ignition on | Engine idling | Remarks | Scrolling value in Volvo Scan Tool (ST) |
|---|---|---|---|---|---|
| #A1 | Signal (+), transmission speed sensor (NC1) | U ≈ 2.5 V | U ≈ 2.5 V With the gear selector in position P/N an AC voltage can be generated | When the car is being driven, an AC signal is generated, its frequency and voltage increase with engine speed (RPM). | - |
| #A2 | Signal (-) (NC1G), speed signal | U ≈ 2.5 V | - | - | |
| #A3 | Signal, gear-shift position sensor terminal A | Gear selector position P, R, 3, L: U=0-0.5 V Other positions: U=0-2 V under Ubat | Signal grounded in positions P, R, 3, L | 2 | |
| #A4 | Signal, gear-shift position sensor terminal B | Gear selector position R, N, D, 3: U=0-0.5 V Other positions: U=0-2 V under Ubat | Signal grounded in positions R, N, D, 3 | 3 | |
| #A5 | Signal, gear-shift position sensor terminal C | Gear selector position D, 3, L: U=0-0.5 V Other positions: U=0-2 V under Ubat | Signal grounded in positions D, 3, L | 4 | |
| #A6 | Signal, gear-shift position sensor terminal PA | Gear selector position P, N, 3: U=0-0.5 V Other positions: U=0-2 V under Ubat | Signal grounded in positions P, N, 3. | 5 | |
| #A7 | - | - | - | - | - |
| #A8 | - | - | - | - | - |
| #A9 | Control signal, solenoid SL (Lock-up) | Activated: U=0-2 V under Ubat Not activated: Ulow | The solenoid receives a signal when it is activated by the transmission control module (TCM). | 30 | |
| #A10 | 30-supply (power supply from battery) | Ubat | - | - | |
| #A11 | Signal (+), vehicle speed sensor (VSS) (SP) | U≈2.5 V | When the car is being driven an AC voltage is generated, frequency and voltage increase with vehicle speed | - | |
| #A12 | Signal (-), vehicle speed sensor (VSS) (SPG) | U≈2.5 V | - | - | |
| #A13 | - | - | - | - | - |
| #A14 | Signal, oil temperature sensor (OT) | Cold transmission (20°C): U ≈ 2.4 V Transmission hot (+100°C): U ≈ 0.3-0.5 V | U decreases with increasing temperature | 16 | |
| #A15 | Signal ground (OTG), oil temperature sensor | Ulow | - | - | |
| #A16 | - | - | - | - | - |
| #A17 | - | - | - | - | - |
| #A18 | - | - | - | - | - |
| #A19 | - | - | - | - | - |
| #A20 | Signal ground (SG), control module | U low | - | - | |
| #A21 | - | - | - | - | - |
| #A22 | Control signal (STH), 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. | - | 31 | |
| #A23 | Signal (STHG), line pressure solenoid STH | U ≈ 1.6 V | Voltage decreases with increasing throttle opening. | - | |
| #A24 | - | - | - | - | - |
| #A25 | - | - | - | - | - |
| #A26 | - | - | - | - | - |
| #A27 | Control signal, shift solenoid S1 | Activated: U=0-2 V under U bat Not activated: Ulow Activation can occur by engaging/disengaging W position (Winter). | The solenoid receives a signal when the transmission control module (TCM) activates it in 2nd and 3rd gears. | 26 | |
| #A28 | Control signal, shift solenoid S2 | Activated: U=0-1 V under U bat Not activated: U low Activation can occur by engaging/disengaging W position (Winter). | The solenoid receives a signal when transmission control module (TCM) activates it in back-up (reverse) and 1st and 2nd gear | 28 | |
| #A29 | Power ground (PG) (measured to battery negative terminal) | U low | - | - | |
| #A30 | 15-supply (Power supply from ignition switch) | U bat | - | - | |