DSA Signal Description
All the values given below are between the terminal in column 1 and terminal 9 (ground), unless otherwise indicated in brackets.
DSA control module terminals 1 - 16 correspond to terminals 31 - 46 on the breakout box.
NOTE:
It is important to connect the breakout box and check the ground terminal before taking readings.
| U= | DC voltage in volts (V) | f = | frequency in Hertz (Hz) | - | - |
| Ubat= | battery voltage | % duty = | duty cycle (pulse ratio) as a percentage (%) | - | - |
| Ulow = | voltage approximately 0 V | - | - | - | - |
| Terminal | Signal type | Ignition on | Engine idling | Other | Parameter read off |
|---|---|---|---|---|---|
| #1 | Power supply (from the ignition switch) |
Ubat | - | - | |
| #2 | Signal, wheel speed left front wheel (from the ABS control module) | U ≈ 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel. |
A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty ≈ 50%). | - | |
| #3 | Signal, wheel speed right front wheel (from the ABS control module) | U ≈ 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel. |
A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty ≈ 50 %). | - | |
| #4 | Signal, wheel speed left rear wheel (from the ABS control module) | U ≈ 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel. |
A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty ≈ 50%). | - | |
| #5 | Signal, throttle position (TP) sensor (from the engine control module (ECM)) |
%duty ≈ 15 % at closed throttle position (CTP) (idling). f ≈ 50 Hz |
Pulsed signal (0 V - Ubat) with fixed frequency and variable pulse ratio (% duty). Pulse ratio (%duty) increases with increased throttle. |
3 | |
| #6 | Signal, DSA switch | Switch unaffected: U ≈ 0 - 3 V below Ubat Switch affected: U ≈Ulow |
The signal is grounded when the switch is pressed. | 8 | |
| #7 | Signal, stop (brake) light switch | Open: U ≈Ulow Closed: U = 0 - 1.5 V below Ubat |
Stop (brake) light switch closes when braking and the control module receives a signal. | 11 | |
| #8 | - | - | - | - | |
| #9 | Ground (for FENIX 5.1 ground via the engine control module (ECM), measured at the battery negative terminal) | Ulow | - | - | |
| #10 | - | - | - | - | |
| #11 | - | - | - | - | |
| #12 | Signal, wheel speed right rear wheel (from the ABS control module) | U ≈ 0 V - Ubat depending on the position of the wheel. The frequency (f) increases with the speed of the wheel. |
A pulsed signal (0 V - Ubat with a fixed pulse ratio (% duty ≈ 50 %). | - | |
| #13 | Signal, load (TQ) (from the engine control module (ECM)) |
U ≈Ulow | f ≈ 33 Hz | Pulsed signal (0 V - Ubat) with variable frequency and pulse ratio (% duty). The frequency increases with engine speed (RPM), the pulse ratio (%duty) increases with load. |
- |
| #14 | Diagnostic lead | U = 1 - 4 V below Ubat Other values apply if the fault-tracing instrument is connected to the data link connector (DLC). |
- | - | |
| #15 | Signal, request for torque limiting (to the engine control module (ECM)) |
f ≈ 200 Hz | Pulsed signal (0 - 5 V) with fixed frequency and variable pulse ratio (% duty). | - | |
| #16 | Control signal, DSA warning lamp | Lamp lit: U =0-0.5 V Lamp not lit: Ubat |
- | 9, 10 | |