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ECM connector "C37"

ECM CONNECTOR SPECIFICATIONS

Terminal No. Wire color Circuit Normal voltage Condition Remarks
1 BLK/RED Heater output of heated oxygen sensor-2 (Bank-1) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
2 BLK/RED Heater output of heated oxygen sensor-2 (Bank-1) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
3 RED Oxygen signal of heated oxygen sensor-2 (Bank-1) 4 - 5 V Ignition switch is at ON position. -
Approx. 0.15 V Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 . Engine is running at specified idle speed after warmed up engine. Output signal varies depending on the engine condition.
4 LT GRN MAF sensor signal 0.5 - 1.0 V Ignition switch is at ON position. -
1.2 - 3.6 V
Refer to REFERENCE WAVEFORM NO.3 .
Engine running at specified idle speed after warmed up engine. Output signal varies depending on the throttle valve opening and engine speed.
5 - - - - -
6 - - - - -
7 - - - - -
8 BLU/RED Power steering pump pressure switch signal 10 - 14 V Ignition switch is at ON position. -
0 - 1 V Turning steering wheel to the right or left as far as it stops while engine is running. -
9 - - - - -
10 GRN/BLK EVAP canister purge valve output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.4 .
Ignition switch is at ON position. Set EVAP canister purge valve at 50% by using "MISC. Test" of SUZUKI scan tool. Output signal is active low duty pulse. Duty ratio varies depending on the vehicle condition.
11 YEL/GRN EGR valve (stepper motor coil 3) output 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.5 .
Engine is at cranking. Output signal is active low duty pulse. Number of pulse generated times varies depending on engine condition.
12 YEL/BLK EGR valve (stopper motor coil 1) output 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.5 .
Engine is at cranking. Output signal is active low duty pulse. Number of pulse generated times varies depending on engine condition.
13 GRY/GRN Fuel injector No.5 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , REFERENCE WAVEFORM NO.7  and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
14 PNK/GRN Fuel injector No.3 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , Reference waveform No.8 and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
15 PNK Fuel injector No.1 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , Reference waveform No.9 and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
16 - - - - -
17 - - - - -
18 BLK A/F sensor signal (+) (Bank-1) 2.0 - 2.4 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine is running at specified idle speed after warmed up engine. -
19 WHT A/F sensor signal (-) (Bank-1) 1.6 - 2.0 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine is running at specified idle speed after warmed up engine. -
20 WHT/BLK Heater output of heated oxygen sensor-2 (Bank-2) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
21 WHT/BLK Heater output of heated oxygen sensor-2 (Bank-2) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
22 RED Oxygen signal of heated oxygen sensor-2 (Bank-2) 4 - 5 V Ignition switch is at ON position. Output signal varies depending on the engine condition.
Approx. 0.15 V
Refer to REFERENCE WAVEFORM NO.1  and REFERENCE WAVEFORM NO.2 .
Engine is running at specified idle speed after warmed up engine.
23 BLU Ground for MAF sensor Below 0.3 V Ignition switch is at ON position. -
24 RED IAT sensor signal 3.62 - 3.93 V Ignition switch is at ON position and intake air temperature is at 0°C (32°F) -
1.85 - 2.02 V Ignition switch is at ON position and intake air temperature is at 40°C (104°F) -
0.73 - 0.80 V Ignition switch is at ON position and intake air temperature is at 80°C (176°F) -
25 WHT Knock sensor signal 2 - 3 V
Refer to REFERENCE WAVEFORM NO.12 .
Engine is running at 4000 RPM after warmed up engine. -
26 PPL/YEL ECT sensor signal 3.64 - 3.95 V Ignition switch is at ON position and engine coolant temperature is at 0°C (32°F) -
1.50 - 1.63 V Ignition switch is at ON position and engine coolant temperature is at 50°C (122°F) -
0.45 - 0.49 V Ignition switch is at ON position and engine coolant temperature is at 100°C (212°F) -
27 - - - - -
28 BLK/YEL Starting motor control relay output 0 - 1 V Ignition switch is at ON position. -
10 - 14 V Ignition switch is at ST position. (Engine is cranking.)
29 GRY/RED IMT vacuum solenoid valve output 0 - 1 V Engine is racing after warmed up engine. -
10 - 14 V Ignition switch is at ON position.
30 YEL EGR valve (stepper motor coil 4) output 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.5 .
Engine is at cranking. Output signal is active low duty pulse. Number of pulse generated times varies depending on engine condition.
31 YEL/RED EGR valve (stepper motor coil 2) output 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.5 .
Engine is at cranking. Output signal is active low duty pulse. Number of pulse generated times varies depending on engine condition.
32 GRY/BLK Fuel injector No.6 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , Reference waveform No.13 and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
33 PNK/BLU Fuel injector No.4 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , Reference waveform No.14 and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
34 PNK/BLK Fuel injector No.2 output 10 - 14 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.6 , Reference waveform No.15 and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Output signal is active low pulse. Pulse frequency varies depending on the engine speed.
Pulse width varies depending on the ECT and engine load.
35 - - - - -
36 - - - - -
37 BRN A/F sensor signal (+) (Bank-2) 2.0 - 2.4 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine is running at specified idle speed after warmed up engine. Output signal varies depending on the engine condition.
38 YEL A/F sensor signal (-) (Bank-2) 1.6 - 2.0 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine is running at specified idle speed after warmed up engine.
39 BLK/YEL Ground for ECM Below 0.3 V Ignition switch is at ON position. -
40 - - - - -
41 - - - - -
42 - - - - -
43 - - - - -
44 - - - - -
45 BLK Output for 5 V power source of throttle position sensor 4.5 - 5.5 V Ignition switch is at ON position. -
46 WHT Throttle position sensor signal (main) 0.34 - 0.66 V Ignition switch is at ON position and accelerator pedal is not depressed after warmed up engine. Output signal varies linearly depending on the throttle valve opening.
3.96 - 4.33 V Ignition switch is at ON position and accelerator pedal is at fully depressed position after warmed up engine.
47 WHT/BLU CKP sensor signal *0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.16 , REFERENCE WAVEFORM NO.30  and REFERENCE WAVEFORM NO.31 .
Engine is running at specified idle speed after warmed up engine. Sensor signals are pulse. Pulse frequency varies depending on the engine speed.
48 GRY/BLK A/C refrigerant pressure sensor signal 1.38 - 1.52 V Air conditioning system is not operated while engine is running and A/C refrigerant pressure is 800 kPa (116 psi). Output signal varies linearly depending on the A/C refrigerant pressure.
2.15 - 2.38 V Air conditioning system is operation while engine is running and when A/C refrigerant pressure is 1400 kPa (203 psi). -
2.67 - 2.95 V Air conditioning system is operation while engine is running and when A/C refrigerant pressure is 1800 kPa (261 psi). -
49 GRY/RED Output for 5 V power source of MAP sensor and A/C refrigerant pressure sensor 4.5 - 5.5 V Ignition switch is at ON position. -
50 - - - - -
51 - - - - -
52 - - - - -
53 - - - - -
54 - - - - -
55 BRN/RED Ignition coil No.5 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , REFERENCE WAVEFORM NO.18  and REFERENCE WAVEFORM NO.30 .
Engine is running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on the engine speed.
56 BRN/WHT Ignition coil No.3 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , Reference waveform No.19 and REFERENCE WAVEFORM NO.30 .
Engine is running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on the engine speed.
57 BRN Ignition coil No.1 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , Reference waveform No.20 and REFERENCE WAVEFORM NO.30 .
Engine is running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on the engine speed.
58 BLK/YEL Ground for ECM Below 0.3 V Ignition switch is at ON position. -
59 BLK/YEL Ground for ECM Below 0.3 V Ignition switch is at ON position. -
60 - - - - -
61 - - - - -
62 - - - - -
63 - - - - -
64 RED Ground for throttle position sensor Below 0.3 V Ignition switch is at ON position. -
65 GRN Throttle position sensor signal (sub) 4.22 - 4.58 V Ignition switch is at ON position and accelerator pedal is not depressed after warmed up engine. Output signal varies linearly depending on the throttle valve opening.
0.58 - 0.95 V Ignition switch is at ON position and accelerator pedal is at fully depressed position after warmed up engine.
66 WHT/RED CMP sensor signal *0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.16 , REFERENCE WAVEFORM NO.30  and REFERENCE WAVEFORM NO.31 .
Engine running at specified idle speed after warmed up engine. Sensor signals are pulse. Pulse frequency varies depending on the engine speed.
67 GRY/GRN Ground for MAP sensor, A/C refrigerant pressure sensor, engine coolant temperature sensor, IAT sensor and heated oxygen sensor-2 Below 0.3 V Ignition switch is at ON position. -
68 RED/WHT MAP sensor signal 3.3 - 4.3 V Ignition switch is at ON position and barometric pressure is at 100 kPa (760 mmHg). -
1.0 - 2.5 V Refer to REFERENCE WAVEFORM NO.21 . Output signal varies linearly depending on the throttle valve opening and engine speed.
69 - - - - -
70 - - - - -
71 - - - - -
72 - - - - -
73 BLK/ORN Ground for ECM Below 0.3 V Ignition switch is at ON position. -
74 PPL/RED Ignition coil No.6 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , Reference waveform No.22 and REFERENCE WAVEFORM NO.30 .
Engine running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on engine speed.
75 BRN/YEL Ignition coil No.4 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , Reference waveform No.23 and REFERENCE WAVEFORM NO.30 .
Engine running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on engine speed.
76 BRN/BLK Ignition coil No.2 output 0 - 0.6 V Ignition switch is at ON position. -
*0 - 0.6 V
↑ ↓
4 - 6 V
Refer to REFERENCE WAVEFORM NO.17 , Reference waveform No.24 and REFERENCE WAVEFORM NO.30 .
Engine running at specified idle speed after warmed up engine. Output signal is active high pulse. Pulse frequency varies depending on engine speed.
77 PNK/BLK Heater output of A/F sensor (Bank-1) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
78 PNK/BLU Heater output of A/F sensor (Bank-2) 10 - 14 V Ignition switch is at ON position. -
*0 - 1 V
↑ ↓
10 - 14 V
Refer to REFERENCE WAVEFORM NO.10  and REFERENCE WAVEFORM NO.11 .
Engine running at specified idle speed after warmed up engine. Output signal is active low duty pulse. Duty ratio varies depending on the engine condition.
79 BLK/YEL Ground for A/F sensor heater Below 0.3 V Ignition switch is at ON position. -
80 BLK/ORN Ground for ECM Below 0.3 V Ignition switch is at ON position. -
81 BLK/ORN Ground for ECM Below 0.3 V Ignition switch is at ON position. -