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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 ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMINAL REFERENCE CHART

TERMINAL NO. WIRE COLOR ITEM CONDITION DATA (DC Voltage)
1 BR ECM ground [Engine is running] 
  • Idle speed
 Body ground
2 Y A/F sensor 1 heater [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 5V(1)
G06443980Courtesy of SUZUKI OF AMERICA CORP.
3 V Throttle control motor 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) or 1st (M/T)
  • Accelerator pedal: Fully released
 0 - 14V(1)
G06443981Courtesy of SUZUKI OF AMERICA CORP.
5 L/B Throttle control motor (Open) [Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T) or 1st (M/T)
  • Accelerator pedal: Fully depressed
 0 - 14V(1)
G06443982Courtesy of SUZUKI OF AMERICA CORP.
11 LG Intake valve timing control solenoid valve [Engine is running] 
  • Warm-up condition 
  • Idle speed
 BATTERY VOLTAGE
(11 - 14V)
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2,500 rpm
 7 - 10V(1)
G06443983Courtesy of SUZUKI OF AMERICA CORP.
12 P Power steering pressure sensor [Engine is running] 
  • Steering wheel: Being turned
 0.5 - 4.0V
[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 3.0V(1)
G06443984Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: 2,000 rpm
 Approximately 3.0V(1)
G06443985Courtesy of SUZUKI OF AMERICA CORP.
14 Y Camshaft position sensor (PHASE) [Engine is running] 
  • Warm-up condition 
  • Idle speed
    NOTE: The pulse cycle changes depending on rpm at idle.
 1.0 - 4.0V(1)
G06443986Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: 2,000 rpm
 1.0 - 4.0V(1)
G06443987Courtesy of SUZUKI OF AMERICA CORP.
15 W Knock sensor [Engine is running] 
  • Idle speed
 Approximately 2.5V
16 V A/F sensor 1 [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 3.1V
35 O Approximately 2.6V
56 W Approximately 2.3V
75 L Approximately 2.3V
22
23
41
42		 LG
SB
R
O		 Fuel injector No. 3
Fuel injector No. 1
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)
G06443988Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2,000 rpm
 BATTERY VOLTAGE
(11 - 14V)(1)
G06443989Courtesy of SUZUKI OF AMERICA CORP.
25 P Heated oxygen sensor 2 heater [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 on load
 Approximately 5V(1)
G06443990Courtesy of SUZUKI OF AMERICA CORP.
[Ignition switch: ON] 
  • Engine: Stopped

[Engine is running] 
  • Engine speed: Above 3,600 rpm
 BATTERY VOLTAGE
(11 - 14V)
32 GR EVAP control system pressure sensor [Ignition switch: ON]  Approximately 1.8 - 4.8V
34 BR Intake air temperature sensor [Engine is running]  Approximately 0 - 4.8V Output voltage varies with intake air temperature.
45 R EVAP canister purge volume control solenoid valve [Engine is running] 
  • Idle speed
  • Accelerator pedal: Not depressed even slightly, after engine starting
 BATTERY VOLTAGE
(11 - 14V)(1)
G06443991Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Engine speed: About 2,000 rpm (More than 100 seconds after starting engine)
 Approximately 1V(1)
G06443992Courtesy 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) or 1st (M/T)
  • Accelerator pedal: Fully released
 More than 0.36V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T) or 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 - 1.9V
61
62
80
81		 L
Y
GR
G		 Ignition signal No. 3
Ignition signal No. 1
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 - 0.1V(1)
G06443993Courtesy of SUZUKI OF AMERICA CORP.
[Engine is running] 
  • Warm-up condition 
  • Engine speed: 2,000 rpm
 0 - 0.2V(1)
G06443994Courtesy 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) or 1st (M/T)
  • Accelerator pedal: Fully released
 Less than 4.75V
[Ignition switch: ON] 
  • Engine: Stopped
  • Shift lever: D (A/T) or 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 fan 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 [Engine is running] 
  • Revving engine from idle up 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
78 B Sensor ground (Heated oxygen sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
82 B Sensor ground (Accelerator pedal position sensor 1) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
83 B Sensor ground (Accelerator pedal position sensor 2) [Engine is running] 
  • Warm-up condition 
  • Idle speed
 Approximately 0V
85 W DATA link connector - -
86 P CAN communication line - -
90 L Sensor power supply (Accelerator pedal position sensor 1) [Ignition switch: ON]  Approximately 5V
91 G Sensor power supply (Accelerator pedal position 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
 0.3 - 0.45V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 Less than 2.4V
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: ON] 
  • Brake pedal: Fully released
 Approximately 0V
[Ignition switch: ON] 
  • 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] 
  • Shift lever: Except above
 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
 0.6 - 0.95V
[Ignition switch: ON] 
  • Engine: Stopped
  • Accelerator pedal: Fully depressed
 Less than 4.75V
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 (A/T)
  • Clutch pedal and/or clutch pedal:

    Slightly depressed (M/T)

 Approximately 0V
[Ignition switch: ON] 
  • Brake pedal: Fully released (A/T)
  • Clutch pedal and brake pedal:

    Fully released (M/T)

 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 shutoff) [Engine is running] 
[Ignition switch: OFF] 
  • For a few seconds after turning ignition switch OFF
 0 - 1.0V
[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 - 1.0V
[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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