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Home >> Suzuki >> 2009 >> Equator Base, 4D Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ40DE) - (1 Of 5) >> Diagnostic Information and Procedures >> ECM Terminal and Reference Value >> ECM Inspection Table
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ECM Inspection Table

Specification data are reference values and are measured between each terminal and ground. Pulse signal is measured by SDT.

CAUTION: Never use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
INSPECTION CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 BR ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 G A/F sensor 1 heater (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed (More than 140 seconds after starting engine)
 Approximately 2.9 - 8.8V (1)
G06441213Courtesy of SUZUKI OF AMERICA CORP.
3 V Throttle control motor relay power supply [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
4 L/W Throttle control motor (Close) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully released
 0 - 14V (1)
G06441214Courtesy of SUZUKI OF AMERICA CORP.
5 L/B Throttle control motor (Open) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully depressed
 0 - 14V(1)
G06441215Courtesy of SUZUKI OF AMERICA CORP.
6 R Heated oxygen sensor 2 heater (Bank 2) [Engine is running] 
  • Engine speed is below 3, 600 RPM after the following conditions are met
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load
 0 - 1.0V
[Ignition switch: ON] 
  • Engine: Stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
10 W Intake valve timing control solenoid valve (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 7 - 12V(1)
G06441216Courtesy of SUZUKI OF AMERICA CORP.
11 LG Intake valve timing control solenoid valve (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 7 - 12V (1)
G06441217Courtesy of SUZUKI OF AMERICA CORP.
12 P Power steering pressure sensor [Engine is running] 
  • Steering wheel: Being turned
 0.5 - 4.5V
[Engine is running] 
  • Steering wheel: Not being turned
 0.4 - 0.8V
13 G Crankshaft position sensor (POS) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 Approximately 10V (1)
G06441218Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 Approximately 10V(1)
G06441219Courtesy of SUZUKI OF AMERICA CORP.
14 Y Camshaft position sensor (PHASE) (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 1.0 - 4.0V(1)
G06441220Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0V(1)
G06441221Courtesy of SUZUKI OF AMERICA CORP.
15 W Knock sensor (Bank 1) [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 BR A/F sensor 1 (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 Approximately 1.8V Output voltage varies with air fuel ratio.
21
22
23		 W
LG
SB		 Fuel injector No. 5
Fuel injector No. 3
Fuel injector No. 1		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 BATTERY VOLTAGE (11 - 14V)(1)
G06441222Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14V)(1)
G06441223Courtesy of SUZUKI OF AMERICA CORP.
24
43		 G
G		 A/F sensor 1 heater (Bank 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed (More than 140 seconds after starting engine)
 Approximately 2.9 - 8.8V(1)
G06441224Courtesy of SUZUKI OF AMERICA CORP.
25 P Heated oxygen sensor 2 heater (Bank 1) [Engine is running] 
  • Engine speed: Below 3, 600 RPM after the following conditions are met
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load
 0 - 1.0V
[Ignition switch: ON] 
  • Engine: Stopped

[Engine is running] 
  • Engine speed: Above 3, 600 RPM
 BATTERY VOLTAGE (11 - 14V)
29 G VIAS control solenoid valve [Engine is running] 
  • Idle speed
 BATTERY VOLTAGE (11 - 14V)
[Engine is running] 
  • Engine speed: Between 2, 200 and 3, 300 RPM
 0 - 1.0V
32 W EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
33 L Camshaft position sensor (PHASE) (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 1.0 - 4.0V(1)
G06441225Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: 2, 000 RPM
 1.0 - 4.0V(1)
G06441226Courtesy of SUZUKI OF AMERICA CORP.
34 BR Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with intake air temperature.
35 O A/F sensor 1 (Bank 1) [Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 Approximately 1.8V Output voltage varies with air fuel ratio.
36 W Knock sensor (Bank 2) [Engine is running] 
  • Idle speed
 Approximately 2.5V
40
41
42		 V
R
O		 Fuel injector No. 6
Fuel injector No. 4
Fuel injector No. 2		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 BATTERY VOLTAGE (11 - 14V)(1)
G06441227Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 000 RPM
 BATTERY VOLTAGE (11 - 14V)(1)
G06441228Courtesy of SUZUKI OF AMERICA CORP.
45 R EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal is not depressed even slightly, after engine starting
 BATTERY VOLTAGE (11 - 14V)(1)
G06441229Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)
 BATTERY VOLTAGE (11 - 14V)(1)
G06441230Courtesy of SUZUKI OF AMERICA CORP.
47 L Sensor power supply (Throttle position sensor) [Ignition switch: ON]  Approximately 5V
48 SB Sensor power supply (EVAP control system pressure sensor) [Ignition switch: ON]  Approximately 5V
49 P Sensor power supply (Refrigerant pressure sensor/Battery current sensor) [Ignition switch: ON]  Approximately 5V
50 W Throttle position sensor 1 [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully depressed
 Less than 4.75V
51 P Mass air flow sensor [Engine is running] 
  • Warm-up condition 
  • Idle speed
 0.9 - 1.2V
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 1.5 - 1.8V
55 G Heated oxygen sensor 2 (Bank 2) [Engine is running] 
  • Revving engine from idle to 3, 000 RPM quickly after the following conditions are met
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load
 0 - Approximately 1.0V
56 LG A/F sensor 1 (Bank 1) [Ignition switch: ON]  Approximately 2.2V
60
61
62		 SB
L
Y		 Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 0 - 0.2V(1)
G06441231Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 0.1 - 0.4V(1)
G06441232Courtesy of SUZUKI OF AMERICA CORP.
66 B Sensor ground (Throttle position sensor) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
67 B Sensor ground [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
68 G Sensor power supply (Power steering pressure sensor) [Ignition switch: ON]  Approximately 5V
69 R Throttle position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T), 1st (M/T)
  • Accelerator pedal: Fully depressed
 More than 0.36V
70 BR Refrigerant pressure sensor [Engine is running] 
  • Warm-up condition 
  • Both A/C switch and blower switch: ON (Compressor operates)
 1.0 - 4.0V
71 R Battery current sensor [Engine is running] 
  • Battery: Fully charged(2)
  • Idle speed
 Approximately 2.6 - 3.5V
73 Y Engine coolant temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74 W Heated oxygen sensor 2 (Bank 1) [Engine is running] 
  • Revving engine from idle to 3, 000 RPM quickly after the following conditions are met
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load
 0 - Approximately 1.0V
75 P A/F sensor 1 (Bank 2) [Ignition switch: ON]  Approximately 2.2V
78 GR Sensor ground (Heated oxygen sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
79
80
81		 P
GR
G		 Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2		 [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on RPM at idle
 0 - 0.2V(1)
G06441233Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2, 500 RPM
 0.1 - 0.4V (1)
G06441234Courtesy of SUZUKI OF AMERICA CORP.
82 B Sensor ground (APP sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 B Sensor ground (APP sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 W Data link connector [Ignition switch: ON] 
  • SDT or GST: disconnected
 Approximately 5V - Battery voltage (11 - 14V)
86 P CAN communication line - -
90 L Sensor power supply (APP sensor 1) [Ignition switch: ON]  Approximately 5V
91 G Sensor power supply (APP sensor 2) [Ignition switch: ON]  Approximately 5V
94 L CAN communication line - -
98 GR Accelerator pedal position sensor 2 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.28 - 0.48V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 More than 2.0
99 SB ASCD steering switch [Ignition switch: ON] 
  • ASCD steering switch: OFF
 Approximately 4V
[Ignition switch: ON] 
  • MAIN switch: Pressed
 Approximately 0V
[Ignition switch: ON] 
  • CANCEL switch: Pressed
 Approximately 1V
[Ignition switch: ON] 
  • RESUME/ACCELERATE switch: Pressed
 Approximately 3V
[Ignition switch: ON] 
  • SET/COAST switch: Pressed
 Approximately 2V
101 LG Stop lamp switch [Ignition switch: OFF] 
  • Brake pedal: Fully released
 Approximately 0V
[Ignition switch: OFF] 
  • Brake pedal: Slightly depressed
 BATTERY VOLTAGE (11 - 14V)
102 O PNP switch [Ignition switch: ON] 
  • Shift lever: P or N (A/T), Neutral (M/T)
 Approximately 0V
[Ignition switch: ON] 
  • Except above position
 BATTERY VOLTAGE (11 - 14V)
104 O Throttle control motor relay [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
[Ignition switch: ON]  0 - 1.0V
106 R Accelerator pedal position sensor 1 [Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully released
 0.65 - 0.87V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 More than 4.3V
107 Y Fuel tank temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108 LG ASCD brake switch [Ignition switch: ON] 
  • Brake pedal: Slightly depressed
 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released
 BATTERY VOLTAGE (11 - 14V)
109 W/R Ignition switch [Ignition switch: OFF]  0V
[Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
111 BR ECM relay (Self shut-off) [Engine is running] 
[Ignition switch: OFF] 
  • For a few seconds after turning ignition switch OFF
 0 - 1.5V
[Ignition switch: OFF] 
  • More than a few seconds after turning ignition switch OFF
 BATTERY VOLTAGE (11 - 14V)
113 V Fuel pump relay [Ignition switch: ON] 
  • For 1 second after turning ignition switch ON

[Engine is running] 		 0 - 1.5V
[Ignition switch: ON] 
  • More than 1 second after turning ignition switch ON
 BATTERY VOLTAGE (11 - 14V)
115
116		 B
GR		 ECM ground [Engine is running] 
  • Idle speed
 Body ground
117 G EVAP canister vent control valve [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
119
120		 R
P		 Power supply for ECM [Ignition switch: ON]  BATTERY VOLTAGE (11 - 14V)
121 R/B Power supply for ECM (Back-up) [Ignition switch: OFF]  BATTERY VOLTAGE (11 - 14V)
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
(2) Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to [HOW TO HANDLE BATTERY ]
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