CONTROL SYSTEM — ECM Terminal Voltage Specification / Control Unit Connector
F2-148spec tableFuel injectors No.5/No.6 (terminals 3Y/3Z) apply to the K8 V6 engine. Engine Signal Monitor (SST) referenced for output verification.
NOTE
B+: Battery positive voltage
ECM Terminal — Input/Output, Connection, Test Condition, Correct Voltage
3O
Input
OutputO
Connection toEGR solenoid valve (vent)
Test conditionIdle
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red light flash
3O
Input
OutputO
Connection toEGR solenoid valve (vent)
Test conditionInitial acceleration *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red light flash
3P
Input
OutputO
Connection toEGR solenoid valve (vacuum)
Test conditionIdle
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red light flash
3P
Input
OutputO
Connection toEGR solenoid valve (vacuum)
Test conditionInitial acceleration *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red light flash
3Q
Input
OutputO
Connection toIdle air control valve
Test conditionIgnition switch ON
Correct voltageApprox. 7V
Remarks—
3Q
Input
OutputO
Connection toIdle air control valve
Test conditionIdle
Correct voltageApprox. 9V
Remarks—
3R
Input—
Output—
Connection to—
Test condition—
Correct voltage—
Remarks—
3S
Input—
Output—
Connection to—
Test condition—
Correct voltage—
Remarks—
3T
Input
OutputO
Connection toFuel pump relay
Test conditionIgnition switch ON
Correct voltageB+
Remarks—
3T
Input
OutputO
Connection toFuel pump relay
Test conditionIdle
Correct voltageBelow 1.0V
Remarks—
3U
Input
OutputO
Connection toFuel injector No.1
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
3V
Input
OutputO
Connection toFuel injector No.2
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
3W
Input
OutputO
Connection toFuel injector No.3
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
3X
Input
OutputO
Connection toFuel injector No.4
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
3Y
Input
OutputO
Connection toFuel injector No.5
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
3Z
Input
OutputO
Connection toFuel injector No.6
Test conditionIgnition switch ON or idle *
Correct voltageB+
Remarks* Engine Signal Monitor: Green and red lights flash
Control Unit Connector (Control Unit Side)
Control Unit Connector pin layout (control unit side)
Top
Terminals (left to right)3Y, 3W, 3U, 3S, 3Q, 3O, 3M, 3K, 3I, 3G, 3E, 3C, 3A | 2O, 2M, 2K, 2I, 2G, 2E, 2C, 2A | 1U, 1S, 1Q, 1O, 1M, 1K, 1I, 1G, 1E, 1C, 1A
Bottom
Terminals (left to right)3Z, 3X, 3V, 3T, 3R, 3P, 3N, 3L, 3J, 3H, 3F, 3D, 3B | 2P, 2N, 2L, 2J, 2H, 2F, 2D, 2B | 1V, 1T, 1R, 1P, 1N, 1L, 1J, 1H, 1F, 1D, 1B