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Pin Voltage Charts

ECM PIN VOLTAGE ASSIGNMENTS (RED 36-PIN CONNECTOR (LOW POWER - SUPERCHARGED))

Terminal No. Circuit (Wire Color) (1) Active Inactive
1 - Intake Air Temp. Sensor Input (Blue/Black) 1.0 Volts At 75°F (10°C) (2)
2 - Electrical Load Input (Blue/Lt. Green) Battery Voltage Ground
3 - EGR Temperature Sensor (Red/Brown) 4.9 Volts At Idle (3)
4 - Mass Airflow Sensor Input (Green/Pink) 1.2 Volts At Idle (4)
5 - Not Used (Blank)
6 - Upstream HO2S Input (Cyls. 1-3) (Green) 0.1-4.7 Voltage Swing (Closed Loop) (5)
7 - Sensor Common Ref. Ground (Black/Green) Ground Ground
8 - HO2S Common Signal Ground (Blue/Purple) Ground Ground
9 - Knock Sensors Common Ground (Blue) Ground Ground
10 - Serial Communication Data (Orange)
11 - Sensor Common Ref. Voltage (Blue/White) 5 Volts 5 Volts
12 - Throttle Position Sensor Input (Green/Yellow) 0.6 Volt At Idle 4.9 Volts (Wide Open Throttle)
13 - Not Used (Blank)
14 - Coolant Temp. Sensor Input (Blue/Yellow) 0.41 Volt At 194°F (90°C) (2)
15 - EGR Valve Position Red/Pink 0.7 Volt At Idle 5 Volts (Maximum EGR)
16 - Downstream HO2S Input (Cyls. 1-3) (Blue) 0.1-4.7 Voltage Swing (Closed Loop) (5)
17 - Battery Power (Black/Lt. Green/Red) Battery Voltage
18 - Downstream HO2S Input (Cyls. 4-6) (Red) 0.1-4.7 Voltage Swing (Closed Loop) (5)
19 - Upstream HO2S Input (Cyls. 4-6) (Brown) 0.1-4.7 Voltage Swing (Closed Loop (5)
20 - Low Fuel Level Input (Black/White) Ground Battery Voltage
21 - Knock Sensor Input "A" Bank (Red) 0 Hz.=No Knock/ 2-20 Hz.=Knock
22 - Not Used (Blank)
23 - Not Used (Blank)
24 - CMP Sensor Supply Output (Green/Blue) Battery Voltage Battery Voltage
25 - Not Used (Blank)
26 - Torque Reduction Request Input (Gray/Blue) Ground Pulse At Shift 9.4 Volts At Idle
27 - Park/Neutral Input (Red/Blue) Ground Battery Voltage
28 - Vehicle Speed Input (Blue/Purple) 10 MPH=20 Hz./20 MPH=40 Hz.
29 - Mass Airflow Sensor Ground (Pink/Gray) Ground Ground
30 - Sensor Common Signal Ground (Black/Green) Ground Ground
31 - Coolant Temp. Sensor Ground (Black/Brown) Ground Ground
32 - Knock Sensor Input "B" Bank (White) 0 Hz.=No Knock/ 2-20 Hz.=Knock
33 - Battery Power (White/Pink) Battery Voltage
34 - CMP Sensor Signal Input (Brown/Green) 1000 RPM=45 Hz./ 2000 RPM=90 Hz.
35 - Not Used (Blank)
36 - A/C Request Input (Blue/Brown) Ground Battery Voltage
(1) Check pin voltage between specified terminal and known-good ground.
(2) Voltage increases with temperature increase.
(3) No EGR at idle. Voltage decreases with EGR flow increase.
(4) Voltage increases with RPM increase.
(5) At idle.
ECM PIN VOLTAGE ASSIGNMENTS (BLACK 36-PIN CONNECTOR (LOW POWER - SUPERCHARGED))

Terminal No. Circuit (Wire Color) (1) Active Inactive
1 - Ground (Black) Ground Ground
2 - Fuel Injector No. 1 Output (Black/Blue) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
3 - Idle Control No. 1 Output (Orange/Yellow) 12 Volts/0 Volt 8 Volts (Not Moving)
4 - Downstream HO2S Heaters Output (Blue/Pink) 0.4-13 Volts/10 Hz. At Idle
5 - Ignition Coil No. 4 Output (Lt. Green/Red) Ground Pulse, 1000 RPM=15 Hz.
6 - Ignition Coil No. 3 Output (Lt. Green/Pink) Ground Pulse, 1000 RPM=15 Hz.
7 - Air Injection Relay Output (Green/Black) Ground Battery Voltage
8 - Ignition Coil No. 2 Output (Lt. Green/Gray) Ground Pulse, 1000 RPM=15 Hz.
9 - Ignition Coil No. 5 Output (Lt. Green/Orange) Ground Pulse, 1000 RPM=15 Hz.
10 - Ignition Coil No. 1 Output (Lt. Green/Blue) Ground Pulse, 1000 RPM=15 Hz.
11 - Ignition Coil No. 6 Output (Lt. Green/Purple) Ground Pulse, 1000 RPM=15 Hz.
12 - Ground (Black) Ground Ground
13 - Fuel Injector No. 4 Output (Black/Red) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
14 - Fuel Injector No. 3 Output (Black/Green) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
15 - Fuel Injector No. 2 Output (Black/Gray) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
16 - Idle Control No. 4 Output (Orange/Black) 12 Volts/0 Volt 8 Volts (Not Moving)
17 - Fuel Used Output (Pink/Red) Ground Pulse, 6 Hz. At Idle
18 - ECM Controlled Relay Output (Brown/Purple) Ground Battery Voltage
19 - Fuel Pump Relay No. 1 Output (Pink/Brown) Ground Battery Voltage
20 - Check Engine Light Output (Lt. Green/Black) Ground Battery Voltage
21 - A/C Clutch Relay Output (Yellow/Red) Ground Battery Voltage
22 - Engine Speed Signal Output (Purple/Yellow) 5 Volts At 1000 RPM=45 Hz.
23 - CKP Sensor Input (Red) Ground At 1000 RPM=900 Hz.
24 - Battery Power (Black/Lt. Green) Battery Voltage
25 - Fuel Injector No. 6 Output (Black/Purple) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
26 - CKP Sensor Ground (Blue) Ground Ground
27 - Fuel Injector No. 5 Output (Black/Orange) Ground Pulse, 2.8 Milliseconds At Idle Battery Voltage
28 - Idle Control No. 3 Output (Orange/Red) 12 Volts/0 Volt 8 Volts (Not Moving)
29 - Idle Control No. 2 Output (Orange/Green) 12 Volts/0 Volt 8 Volts (Not Moving)
30 - Upstream HO2S Heaters Output (Blue/Brown) 0.4-13 Volts/ 10 Hz. At Idle
31 - Not Used (Blank)
32 - Throttle Position Output (Green/Brown) 1.25 Volts At Idle 4.9 Volts (Wide Open Throttle)
33 - Engine Torque Output (Purple/White) 10.4 Volts (No Load) (2)
34 - Emission Control Valve Output (Purple/Green) Battery Voltage Ground
35 - EGR Solenoid Valve Output (Green/Red) 0.1-9 Volts
36 - Ground (Black) Ground Ground
(1) Check pin voltage between specified terminal and known-good ground.
(2) Voltage decreases with load increase.
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