Signal Specification
All values below are measured between the relevant terminal in column 2 and #Axx (#Axx on the breakout box) unless otherwise stated in parenthesis after the table entry.
Connector A (96-pin) corresponds to terminals #A1 - #B36 on the breakout box.
Connector B (58-pin engine side) corresponds to terminals #C1 - #58 on the breakout box.
NOTE:
Connect the breakout box and check the ground connections before starting to measure.
CONNECTOR A
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Miscellaneous |
| #A1 | #A1 | - | - | - | - |
| #A2 | #A2 | - | - | - | - |
| #A3 | #A3 | - | - | - | - |
| #A4 | #A4 | - | - | - | - |
| #A5 | #A5 | - | - | - | - |
| #A6 | #A6 | Impulse sensor, signal (-) | U = Ulow | - | Measured to terminal #A30 (#A30). |
| #A7 | #A7 | Camshaft sensor intake, ground | U=Ulow | U=Ulow | - |
| #A8 | #A8 | Camshaft sensor exhaust, ground | U=Ulow | U=Ulow | - |
| #A9 | #A9 | Front heated oxygen sensor (HO2S), bank 1, signal (+) | - | λ = 1 when current is 0 mA | Measurement range: 0 ± 12 mA. Negative current indicates a rich fuel/air mixture. |
| #A10 | #A10 | Front heated oxygen sensor (HO2S), bank 1, signal (-) | - | λ = 1 when current is 0 mA | Measurement range: 0 ± 12 mA. Negative current indicates a rich fuel/air mixture. |
| #A11 | #A11 | Camshaft sensor intake, supply voltage | U = 5 V | U = 5 V | - |
| #A12 | #A12 | Camshaft sensor exhaust, supply voltage | U = 5 V | U = 5 V | - |
| #A13 | #A13 | Engine coolant temperature (ECT) sensor, signal | (+30°C) U = 1.22 V (+80°C) U = 0.29 V (+100°C) U = 0.17 V |
(+30°C) U = 1.22 V (+80°C) U = 0.29 V (+100°C) U = 0.17 V |
U drops with increased engine coolant temperature. |
| #A14 | #A14 | Mass air flow (MAF) sensor, signal ground | U=Ulow | U=Ulow | - |
| #A15 | #A15 | - | - | - | - |
| #A16 | #A16 | - | - | - | - |
| #A17 | #A17 | Electronic throttle module (ETA), ground | U=Ulow | U=Ulow | - |
| #A18 | #A18 | Rear heated oxygen sensor (HO2S), bank 1, signal (-). | - | - | - |
| #A19 | #A19 | Knock sensor (KS) bank 1, signal (-) | U = Ulow | - | - |
| #A20 | #A20 | Knock sensor (KS) bank 2, signal (-) | U = Ulow | - | - |
| #A21 | #A21 | Fuel temperature/fuel pressure sensor, ground | U = Ulow | U = Ulow | - |
| #A22 | #A22 | Mass air flow (MAF) sensor, signal ground | U=Ulow | U=Ulow | - |
| #A23 | #A23 | Manifold absolute pressure (MAP) sensor, ground | U=Ulow | U=Ulow | - |
| #A24 | #A24 | Manifold absolute pressure (MAP) sensor, supply voltage | U = 5 V | - | - |
| #A25 | #A25 | - | - | - | - |
| #A26 | #A26 | - | - | - | - |
| #A27 | #A27 | - | - | - | - |
| #A28 | #A28 | - | - | - | - |
| #A29 | #A29 | - | - | - | - |
| #A30 | #A30 | Impulse sensor, signal (+) | U=Ulow | U = sinus voltage U ≈1.7 to 1.9 V |
Measured to terminal #A6 (#A6). The voltage increases with increased engine speed (RPM). |
| #A31 | #A31 | Front heated oxygen sensor (HO2S), bank 2, signal (+) | - | λ = when current is 0 mA | Measurement range: 0 ± 12 mA. Negative current indicates a rich fuel/air mixture. |
| #A32 | #A32 | Front heated oxygen sensor (HO2S), bank 2, signal (-) | - | λ = when current is 0 mA | Measurement range: 0 ± 12 mA. Negative current indicates a rich fuel/air mixture. |
| #A33 | #A33 | Exhaust camshaft position (CMP) sensor, signal | U = 5 V or Ulow | U= Pulsed signal Umax. > 4.5 V Umin. <1 V |
Measure against #A8 (#A8). The frequency varies with engine RPM. Measure with advanced measuring tool. |
| #A34 | #A34 | Intake camshaft position (CMP) sensor, signal | U = 5 V or Ulow | U= Pulsed signal Umax. >4.5 V Umin. <1 V |
Measure against #A7 (#A7). The frequency varies with engine RPM. Measure with advanced measuring tool. |
| #A35 | #A35 | - | - | - | - |
| #A36 | #A36 | - | - | - | - |
| #A37 | #A37 | - | - | - | - |
| #A38 | #A38 | Actuator variable intake upper, control signal | - | - | - |
| #A39 | #A39 | Actuator variable intake lower, control signal | - | - | - |
| #A40 | #A40 | Rear heated oxygen sensor (HO2S), bank 1, signal (+) | - | λ = 1 at approx. 700 mV λ >1 at approx. 200 mV |
- |
| #A41 | #A41 | Rear heated oxygen sensor (HO2S), bank 2, signal (+) | - | λ = 1 at approx. 700 mV λ >1 at approx. 200 mV |
- |
| #A42 | #A42 | Knock sensor (KS) bank 1, signal (+) | U = 2.5 V | - | Measured to terminal #A19 (#A19). |
| #A43 | #A43 | Knock sensor (KS) bank 2, signal (+) | U = 2.5 V | - | Measured to terminal #A20 (#A20). |
| #A44 | #A44 | - | - | - | - |
| #A45 | #A45 | Rear heated oxygen sensor (HO2S) bank 2, ground | U=Ulow | U=Ulow | - |
| #A46 | #A46 | Fuel temperature sensor, signal | - | - | Measurement range: -40 to +130°C. |
| #A47 | #A47 | Fuel temperature/fuel pressure sensor, supply voltage | U = 5 V | - | - |
| #A48 | #A48 | Electronic throttle module (ETA), voltage feed | U = 5 V | U = 5 V | - |
| #A49 | #A49 | - | - | - | - |
| #A50 | #A50 | - | - | - | - |
| #A51 | #A51 | - | - | - | - |
| #A52 | #A52 | - | - | - | - |
| #A53 | #A53 | - | - | - | - |
| #A54 | #A54 | - | - | - | - |
| #A55 | #A55 | - | - | - | - |
| #A56 | #A56 | Ignition coil cyl 4, control signal | U=Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #A57 | #A57 | Ignition coil cyl 2, control signal | U=Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #A58 | #A58 | Ignition coil cyl 6, control signal | U = Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #A59 | #A59 | Ignition coil cyl 3, control signal | U=Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #A60 | #A60 | Ignition coil cyl 5, control signal | U=Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #B1 | #A61 | Ignition coil cyl 1, control signal | U=Ulow | Utop = 12 V pulse ratio 30% f = 240 Hz | Pulse ratio and frequency increases with increased engine speed (RPM) |
| #B2 | #A62 | Misfire signal | - | - | Pulse width modulation (PWM) signal, for ignition coil cyl. 1, 4, 6 and 7 |
| #B3 | #A63 | Oil level and oil temperature sensor, signal | - | - | Pulse width modulation (PWM) signal |
| #B4 | #A64 | - | - | - | - |
| #B5 | #A65 | Electronic throttle module (ETA), throttle position sensor circuit 1, signal | Unaffected: U ≈ 0.8 V Fully depressed accelerator pedal: U ≈ 4 V |
- | Voltage varies depending on the position of the throttle. Voltage increases with increased throttle opening. |
| #B6 | #A66 | Intake air temperature (IAT) sensor signal | (+20°C) U = 3.50 V (+30°C) U = 3.00 V (+40°C) U = 2.50 V |
(+20°C) U = 3.50 V (+30°C) U = 3.00 V (+40°C) U = 2.50 V |
The intake air temperature (IAT) sensor is integrated in the mass air flow (MAF) sensor. |
| #B7 | #A67 | Electronic throttle module (ETA), throttle position sensor circuit 2, signal | Unaffected: U ≈ 1.7 V Fully depressed accelerator pedal: U ≈ 4.1 V |
- | Voltage varies depending on the position of the throttle. Voltage increases with increased throttle opening. |
| #B8 | #A68 | Engine coolant temperature (ECT) sensor, signal | (+30°C) U = 1.22 V (+80°C) U = 0.29 V (+100°C) U = 0.17 V |
(+30°C) U = 1.22 V (+80°C) U = 0.29 V (+100°C) U = 0.17 V |
U drops with increased engine coolant temperature. |
| #B9 | #A69 | Manifold absolute pressure (MAP) sensor, signal | U≈3.7 V at 1000 mbar | - | - |
| #B10 | #A70 | Mass air flow sensor, signal | U≈0.6 V | U≈1.4 V | U increases with increasing air mass |
| #B11 | #A71 | Fuel pressure sensor, signal | - | - | - |
| #B12 | #A72 | - | - | - | - |
| #B13 | #A73 | Power supply from system relay | U = Ubat | U = Ubat | - |
| #B14 | #A74 | Electronic Throttle Module (ETA) engine, control signal (-) | Idle = -1.5 Wide open throttle (WOT) = 2 |
Pulse width modulation (PWM) signal. Utop =Ubat Pulse ratio 0-100% The polarity of the control signal switches when the damper motor is to be deployed in the opposite direction. |
The damper motor is controlled using a pulse width modulation (PWM) signal from the integrated power stage in the engine control module (ECM) measured to terminal #A75. |
| #B15 | #A75 | Electronic Throttle Module (ETA) engine, control signal (+) | Idle = -1.5 Wide open throttle (WOT) = 2 |
Pulse width modulation (PWM) signal. Utop =Ubat Pulse ratio 0-100% The polarity of the control signal switches when the damper motor is to be deployed in the opposite direction. |
The damper motor is controlled using a pulse width modulation (PWM) signal from the integrated power stage in the engine control module (ECM) measured to terminal #A74. |
| #B16 | #A76 | Front heated oxygen sensor (HO2S) bank 1 preheating, control signal | - | Utop = 12 V pulse ratio 30 - 60% f = 8 Hz | Pulsed 12 V-signal. |
| #B17 | #A77 | Front heated oxygen sensor (HO2S) bank 2 preheating, control signal | - | Utop = 12 V pulse ratio 30 - 60% f = 8 Hz | Pulsed 12 V-signal. |
| #B18 | #A78 | Injector 1, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B19 | #A79 | Injector 5, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B20 | #A80 | Injector 3, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B21 | #A81 | Injector 6, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B22 | #A82 | Injector 2, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B23 | #A83 | Injector 4, control signal | U = Ubat | t = 2-3 ms | t increases with engine speed and load |
| #B24 | #A84 | Evaporative emission system (EVAP) valve, control signal (signal ground) | U = Ubat | - | Pulse width modulation (PWM) signal during opening (control) of the evaporative emission system (EVAP) valve. The pulse ratio varies with regulating. |
| #B25 | #A85 | Variable A/C compressor, control signal | - | Utop = 12 V pulse ratio 30-75% f = 400 Hz | Pulsed 12 V-signal. |
| #B26 | #A86 | Reset valve camshaft intake (VVT), control signal | - | Pulse width modulation (PWM) signal Utop =Ubat f=300 Hz Pulse ratio 5% |
The pulse ratio varies during regulation. |
| #B27 | #A87 | - | - | - | - |
| #B28 | #A88 | Rear heated oxygen sensor preheating bank 1, control signal | - | Utop
= 12 V Pulse ratio 30-60% |
- |
| #B29 | #A89 | Rear heated oxygen sensor preheating bank 2, control signal | - | Utop
= 12 V Pulse ratio 30-60% |
- |
| #B30 | #A90 | Cam profile solenoid 1, control signal | U = Ubat | U = Ubat | - |
| #B31 | #A91 | Cam profile solenoid 2, control signal | U = Ubat | U = Ubat | - |
| #B32 | #A92 | LIN signal, Generator (GEN) | - | - | - |
| #B33 | #A93 | - | - | - | - |
| #B34 | #A94 | - | - | - | - |
| #B35 | #A95 | - | - | - | - |
| #B36 | #A96 | - | - | - | - |
| - | - | - | - | - | - |
CONNECTOR B
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Engine idling | Miscellaneous |
| #C1 | #B1 | - | - | - | - |
| #C2 | #B2 | Power ground | U=Ulow | - | Ground terminal connected to chassis. |
| #C3 | #B3 | Power supply from system relay | U = Ubat | U = Ubat | - |
| #C4 | #B4 | Power ground | U = Ubat | - | Ground terminal connected to chassis. |
| #C5 | #B5 | Power supply from system relay | U = Ubat | U = Ubat | - |
| #C6 | #B6 | Power ground | U = Ubat | - | Ground terminal connected to chassis. |
| #C7 | #B7 | - | - | - | - |
| #C8 | #B8 | Cooling fan control module, control signal | - | - | Pulse width modulation (PWM) signal to engine cooling fan (FC) control module |
| #C9 | #B9 | Start relay, signal (-) | - | - | - |
| #C10 | #B10 | Air conditioning (A/C) relay, control signal (signal ground) | - | - | - |
| #C11 | #B11 | Starter relay, control signal (+) | - | - | - |
| #C12 | #B12 | - | - | - | - |
| #C13 | #B13 | Automatic: transmission control module (TCM), gear position signal. Manual: clutch pedal switch | With P/N connected: U=Ulow With P/N disconnected U=Ubat |
- | Grounded in the transmission control module (TCM) when in P/N. |
| #C14 | #B14 | Power supply (wake up, 15-feed | U = Ubat | U = Ubat | - |
| #C15 | #B15 | Start, signal 50-feed | U = Ubat | U = Ubat | Ignition off: U = Ulow |
| #C16 | #B16 | Supply from B+ | - | - | - |
| #C17 | #B17 | Start, signal 50-feed | - | U=Ubat at crank | The engine control module (ECM) requests engine starting via the central electronic module (CEM). |
| #C18 | #B18 | - | - | - | - |
| #C19 | #B19 | - | - | - | - |
| #C20 | #B20 | - | - | - | - |
| #C21 | #B21 | Fuel pump (FP) control module, control signal | - | - | Pulse width modulated (PWM) signal to the central electronic module (CEM) to control the fuel pump (FP) relay. |
| #C22 | #B22 | - | - | - | - |
| #C23 | #B23 | - | - | - | - |
| #C24 | #B24 | - | - | - | - |
| #C25 | #B25 | - | - | - | - |
| #C26 | #B26 | Accelerator pedal (AP) position sensor, PWM signal | PWM signal Utop =Ubat t=5 ms pulse ratio 8-88% | Pulse width modulation (PWM) signal Utop =Ubat t=5 ms pulse ratio 6-14% | The PWM signal from the accelerator pedal (AP) position sensor to the engine control module (ECM). The pulse ratio increases as the accelerator pedal (AP) is depressed. |
| #C27 | #B27 | System relay, control signal | - | U=Ulow | Engine control module (ECM) grounds with ignition on and releases after afterrun. |
| #C28 | #B28 | - | - | - | - |
| #C29 | #B29 | - | - | - | - |
| #C30 | #B30 | Brake light switch | - | - | - |
| #C31 | #B31 | A/C high pressure sensor, power supply | U = 5 V | - | - |
| #C32 | #B32 | - | - | - | - |
| #C33 | #B33 | - | - | - | - |
| #C34 | #B34 | Outside temperature sensor, ground | U = Ulow | - | - |
| #C35 | #B35 | Outside temperature sensor, Signal | (0°C) U = 2.92 V (+10°C) U = 2.40 V (+20°C) U = 1.90 V (+30°C) U = 1.46 V |
- | Temperature range: -40 to +30°C ref: 2.87 V at 21°C |
| #C36 | #B36 | - | - | - | - |
| #C37 | #B37 | - | - | - | - |
| #C38 | #B38 | - | - | - | - |
| #C39 | #B39 | - | - | - | - |
| #C40 | #B40 | - | - | - | - |
| #C41 | #B41 | Communication lead, control modules (CAN L) | - | - | - |
| #C42 | #B42 | - | - | - | - |
| #C43 | #B43 | - | - | - | - |
| #C44 | #B44 | - | - | - | - |
| #C45 | #B45 | Leak diagnostic unit, preheating, control signal | - | - | Heating element activated: U=Ulow Heating element not activated: U=Ubat Certain markets only. |
| #C46 | #B46 | Leak diagnostic unit valve, control signal | - | - | Valve activated: U=Ulow Valve not activated: U=Ubat Certain markets only. |
| #C47 | #B47 | - | - | - | - |
| #C48 | #B48 | - | - | - | - |
| #C49 | #B49 | - | - | - | - |
| #C50 | #B50 | - | - | - | - |
| #C51 | #B51 | A/C high pressure sensor, signal | - | U = 1.4 V | The voltage increases with increased pressure. |
| #C52 | #B52 | - | - | - | - |
| #C53 | #B53 | A/C high pressure sensor, ground | U=Ulow | - | - |
| #C54 | #B54 | Communication cable control module (CAN H) | - | - | - |
| #C55 | #B55 | - | - | - | - |
| #C56 | #B56 | - | - | - | |
| #C57 | #B57 | - | - | - | - |
| #C58 | #B58 | - | - | - | - |