Signal specification
General
All the values given below are between the respective terminal in column 1 and terminal #B3 in column 2 (power ground) unless otherwise stated in brackets after the table entry. Control module terminals #A1-#A60 correspond to terminals #A1-#60 on the breakout box, terminals #A61-#A70 correspond to terminals #B1-#B10 on the breakout box and terminals #B1-#B50 correspond to terminals #B10-#B60 on the breakout box.
NOTE:
It is important to connect the breakout box and check the ground terminals before taking readings.
HINT: If the numbering of the connector is different from the numbering on the breakout box, the connector number is given first, terminal #A61, followed by the breakout box number in brackets, (terminal #B1).
HINT: Example: #A61 (#B1)
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | % duty = | Duty cycle (pulse ratio) as a percentage (%) |
| t = | Time in milliseconds (ms) |
| Terminal | Breakout box | Signal type | Ignition on | Engine idling | Other |
| #A1 | #A1 | - | - | - | |
| #A2 | #A2 | - | - | - | |
| #A3 | #A3 | - | - | - | |
| #A4 | #A4 | Signal (+) engine coolant temperature (ECT) sensor | (+30° C) U=1.22V (+80° C) U=0.29V (+100° C) U=0.17V |
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| #A5 | #A5 | Signal (-) intake air temperature (IAT) sensor | (+20° C) U=3.50V (+30° C) U=3.00V (+40° C) U=2.50V |
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| #A6 | #A6 | - | - | - | |
| #A7 | #A7 | Engine cooling fan (FC) control signal | Pulse width modulation (PWM) signal Uhigh =0.7*Ubat Ulow =1.2V F=100 Hz Pulse ratio = 10%-95% |
- | |
| #A8 | #A8 | - | - | ||
| #A9 | #A9 | EVAP control signal | U = Ubat | PWM signal during activation of the canister purge (CP) valve | |
| #A10 | #A10 | - | - | - | |
| #A11 | #A11 | - | - | - | |
| #A12 | #A12 | ||||
| #A13 | #A13 | Camshaft reset valve control signal | Pulse width modulation (PWM) signal Utop =Ubat t = 4 ms pulse ratio=12.5 % |
Pulse width modulation (PWM) signal Utop =Ubat t = 4 ms pulse ratio = 50 % |
The pulse ratio increases with engine speed (RPM) |
| #A14 | #A14 | Injector no. 5 control signal | U = Ubat | t= 2-3 ms | t increases with engine speed (RPM) and load |
| #A15 | #A15 | Injector no. 3 control signal | U = Ubat | t= 2-3 ms | t increases with engine speed (RPM) and load |
| #A16 | #A16 | Injector no. 1 control signal | U = Ubat | t= 2-3 ms | t increases with engine speed (RPM) and load |
| #A17 | #A17 | - | - | - | |
| #A18 | #A18 | Control signal, front heated oxygen sensor (HO2S) preheating | U = Ubat | Preheating of U=Ubat Preheating U=Ulow |
|
| #A19 | #A19 | - | - | - | |
| #A20 | #A20 | - | - | - | |
| #A21 | #A21 | - | - | - | |
| #A22 | #A22 | Mass air flow (MAF) sensor signal | U=1 volt | U=1.7 volt | U increases with increasing air mass |
| #A23 | #A23 | Boost pressure sensor signal | U=1.96 volts | U increases with increasing boost pressure | |
| #A24 | #A24 | Front heated oxygen sensor (HO2S), pump current | Pulsed power supply - cannot be measured | Pulsed power supply - cannot be measured | |
| #A25 | #A25 | - | - | - | |
| #A26 | #A26 | Oil pressure switch signal | U=Ulow | U = Ubat | |
| #A27 | #A27 | - | - | - | |
| #A28 | #A28 | Front heated oxygen sensor (HO2S), calibration current | Cannot be measured | Cannot be measured | |
| #A29 | #A29 | Power supply, camshaft position (CMP) sensor | U =5 V | ||
| #A30 | #A30 | Ignition coil no. 2 control signal | U=Ulow | U=2.5 V thigh =2 ms |
the frequency varies according to engine speed (RPM) |
| #A31 | #A31 | Ignition coil no. 1 control signal | U=Ulow | U=2.5 V thigh =2.5 ms |
the frequency varies according to engine speed (RPM) |
| #A32 | #A32 | - | - | - | |
| #A33 | #A33 | Injector no. 4 control signal | U = Ubat | tlow =2-3 ms | t increases with engine speed (RPM) and load |
| #A34 | #A34 | Injector no. 2 control signal | U = Ubat | tlow =2-3 ms | t increases with engine speed (RPM) and load |
| #A35 | #A35 | Control signal, rear heated oxygen sensor (HO2S) preheating | U = Ubat | Preheating of U=Ubat Preheating U=Ulow |
|
| #A36 | #A36 | - | - | - | |
| #A37 | #A37 | Control modules communication cable (CAN H) | Between the engine control module (ECM) and the throttle unit | ||
| #A38 | #A38 | Turbocharger (TC) control valve control signal | U = Ubat | U = Ubat | active U=PWM signal |
| #A39 | #A39 | Manifold absolute pressure (MAP) sensor, air conditioning (A/C) pressure sensor, mass air flow (MAF) sensor, 5 volt power supply | U=5 volt | ||
| #A40 | #A40 | - | - | - | |
| #A41 | #A41 | Signal (+), front heated oxygen sensor (HO2S) | Pulsed current signal, cannot be measured | Pulsed current signal, cannot be measured | |
| #A42 | #A42 | Signal (-), front heated oxygen sensor (HO2S) | Pulsed current signal, cannot be measured | Pulsed current signal, cannot be measured | |
| #A43 | #A43 | - | - | - | |
| #A44 | #A44 | - | - | - | |
| #A45 | #A45 | Signal (+), rear knock sensor (KS) | U=Ulow | ||
| #A46 | #A46 | Signal (+) front knock sensor (KS) | U=Ulow | ||
| #A47 | #A47 | Signal (+), camshaft position (CMP) sensor | U=5 volts | U= quadratic wave voltage Utop =5volts |
the frequency varies according to engine speed (RPM) |
| #A48 | #A48 | Signal (+), flywheel sensor | U=2.5 volts | U= sine wave voltage Utop =5volts Uoffset =2.5volts |
|
| #A49 | #A49 | - | - | - | |
| #A50 | #A50 | ignition coil no. 3 | U=Ulow | U= 2.5 V thigh =2 ms |
the frequency varies according to engine speed (RPM) |
| #A51 | #A51 | ignition coil no. 5 | U=Ulow | U= 2.5 V thigh =2 ms |
the frequency varies according to engine speed (RPM) |
| #A52 | #A52 | ignition coil no. 4 | U=Ulow | U= 2.5 V thigh =2 ms |
the frequency varies according to engine speed (RPM) |
| #A53 | #A53 | Power ground 3 | U low | ||
| #A54 | #A54 | Power ground 4 | U low | ||
| #A55 | #A55 | Control modules communication cable (CAN L) | Between the engine control module (ECM) and the throttle unit | ||
| #A56 | #A56 | Control signal, accelerator pedal (AP) position sensor PWM signal | Utop
=12 V t = 4 ms pulse ratio=8% 2% with unaffected accelerator pedal (AP) and 50% - 90% with fully depressed accelerator pedal (AP) On certain vehicles the accelerator pedal (AP) will be at the limit before the signal reaches 90%. |
Between the engine control module (ECM) and the throttle unit | |
| #A57 | #A57 | Stop lamp switch control signal | U=Ulow
(not activated) U=Uhigh (activated) |
Between the engine control module (ECM) and the throttle unit | |
| #A58 | #A58 | Signal ground, mass air flow (MAF) sensor | U=Ulow | ||
| #A59 | #A59 | - | - | - | |
| #A60 | #A60 | Signal ground for the Air conditioning (A/C) pressure sensor, boost pressure sensor, oil level sensor, oil pressure sensor, engine coolant temperature (ECT) sensor, EGR valve temperature sensor | U=Ulow | ||
| #A61 | #B1 | Signal (+), rear heated oxygen sensor (HO2S) | U≈0.50 V | Above 0.6 V or below 0.3 V | |
| #A62 | #B2 | Signal (-), rear heated oxygen sensor (HO2S) | U=Ulow | U=Ulow | |
| #A63 | #B3 | Body signal ground | U=Ulow | ||
| #A64 | #B4 | Signal (-) front knock sensor (KS) | U=Ulow | ||
| #A65 | #B5 | Camshaft position (CMP) sensor signal ground | U=Ulow | ||
| #A66 | #B6 | Signal (-) flywheel sensor | U = 2.5 volt | U = sine wave voltage Utop =3.5 volts Uoffset =2.5 volts |
the frequency increases with engine speed (RPM) |
| #A67 | #B7 | Signal (-) rear knock sensor (KS) | U=Ulow | U=Ulow | |
| #A68 | #B8 | Air conditioning (A/C) pressure sensor signal | U=0.9 V (at approximately 20°C) | U increases with pressure in the air conditioning (A/C) system | |
| #A69 | #B9 | Front heated oxygen sensor (HO2S), calibration current, bank 1 | Cannot be measured | Cannot be measured | |
| #A70 | #B10 | Power supply | U = Ubat | Measured via the system relay |
| Terminal | Breakout box | Signal type | Ignition on | Engine idling | Other |
| #B1 | #B11 | Control modules communication cable (CAN L) | Data communication, high speed network | ||
| #B2 | #B12 | - | - | - | |
| #B3 | #B13 | - | - | - | |
| #B4 | #B14 | Signal ground for the intake air temperature (IAT) sensor, fuel tank pressure sensor, fuel level sensor, clutch pedal sensor, brake pedal sensor | U=Ulow | ||
| #B5 | #B15 | Signal ground, accelerator pedal (AP) position sensor | U=Ulow | ||
| #B6 | #B16 | - | - | - | |
| #B7 | #B17 | - | - | - | |
| #B8 | #B18 | Signal (+), coolant level sensor | U=Ulow | ||
| #B9 | #B19 | Accelerator pedal (AP) position sensor power supply, analog sensor | U =5 V | ||
| #B10 | #B20 | Fuel tank pressure sensor power supply | U =5 V | ||
| #B11 | #B21 | 30-supply (Power supply from the battery) | U = Ubat | ||
| #B12 | #B22 | - | - | - | |
| #B13 | #B23 | Control module communication cable (CAN H) | Data communication, high speed network | ||
| #B14 | #B24 | - | - | - | |
| #B15 | #B25 | Clutch pedal sensor signal | U=3.3 V (unaffected) U=2.2 V (fully depressed, 100 mm) |
Varies according to the position of the clutch pedal | |
| #B16 | #B26 | Brake pedal sensor signal | U=3.1 V (unaffected) U=2.6 V (25 mm depressed) |
Varies depending on the position of the brake pedal | |
| #B17 | #B27 | Accelerator pedal (AP) position sensor signal, analog signal | U = 0.4 0.1 V with unaffected accelerator pedal (AP) U=2.5-4.4 V = the accelerator pedal (AP) fully depressed On certain vehicles the accelerator pedal (AP) will be at the limit position before the signal reaches 4.4 V. |
Varies according to the position of the accelerator pedal (AP) | |
| #B18 | #B28 | - | - | - | |
| #B19 | #B29 | - | - | - | |
| #B20 | #B30 | - | - | - | |
| #B21 | #B31 | Output signal (+), engine speed (RPM) | U=Ulow | U = quadratic wave voltage Utop =Ubat |
frequency increases with engine speed (RPM) |
| #B22 | #B32 | Diagnostic lead C-link | U=90% of Ubat | Other values apply if a generic fault-tracing instrument is connected to the data link connector (DLC) | |
| #B23 | #B33 | Signal (+) crank, terminal 50 | U=Ulow | U=Ulow | U=Ubat at the crank |
| #B24 | #B34 | - | - | - | |
| #B25 | #B35 | Signal (+) accelerator pedal (AP) position sensor, PWM signal | Utop
=12 V t = 4 ms pulse ratio=8% 2% with unaffected accelerator pedal (AP) and 50% - 90% with fully depressed accelerator pedal (AP) On certain vehicles the accelerator pedal (AP) will be at the limit before the signal reaches 90%. |
Between the accelerator pedal (AP) position sensor and the engine control module (ECM) | |
| #B26 | #B36 | Signal (+), stop lamp switch | U=Ubat
when the brake pedal is affected U=Ulow when the brake pedal is unaffected |
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| #B27 | #B37 | - | - | - | |
| #B28 | #B38 | - | - | - | |
| #B29 | #B39 | Outside temperature sensor signal | (0° C) U=2.92 V (+10° C) U=2.40V (+20° C) U=1.90 V (+30°C) U = 1.46 V |
Temperature range: - 40°C to +30°C | |
| #B30 | #B40 | - | - | - | |
| #B31 | #B41 | Fuel tank pressure sensor signal | U=2.5 V at 1kPa U=3.3 V at atmospheric pressure (0 kPa overpressure) U=4.1 V at 1 kPa overpressure |
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| #B32 | #B42 | - | - | - | |
| #B33 | #B43 | - | - | - | |
| #B34 | #B44 | - | - | - | |
| #B35 | #B45 | - | - | - | |
| #B36 | #B46 | - | - | - | |
| #B37 | #B47 | Ignition on signal, terminal 15 | U = Ubat | ||
| #B38 | #B48 | System relay, control signal | U=Ulow | U=Ulow | Relay activated: U=Ulow Relay not activated: U = Ubat the system relay runs on (2-5 minutes) |
| #B39 | #B49 | - | - | - | |
| #B40 | #B50 | EVAP canister shut-off valve control signal | U=3.82 volts | ||
| #B41 | #B51 | - | - | - | |
| #B42 | #B52 | - | - | - | |
| #B43 | #B53 | - | - | - | |
| #B44 | #B54 | Air conditioning (A/C) activation control signal | U=Ubat
(not activated) U=Ulow (activated) |
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| #B45 | #B55 | Fuel pump (FP) activation control signal | the control signal to the central electronic module (CEM) for control of the fuel pump (FP) relay | ||
| #B46 | #B56 | Malfunction indicator lamp (MIL) control signal | U=Ulow | U=Ubat
(not activated) U=Ulow (activated) |
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| #B47 | #B57 | - | - | - | |
| #B48 | #B58 | - | - | - | |
| #B49 | #B59 | - | - | - | |
| #B50 | #B60 | - | - | - |