Chevrolet Performance 19331517 Manual Del Usuario página 7

Engine Wiring Harness
The following lists the engine and vehicle side connections. Optional circuits are described in the 'Optional Connections' section
below: NOTE: A Malfunction Indicator Lamp (MIL- sometimes called a "service engine soon" light) is mounted inside
the fuse/relay center. A redundant MIL output is also available in the harness near the pedal module connector. It is
recommended that a MIL also be installed in a visible location in the passenger compartment. This circuit requires any
12v low current light and an ignition 12v power source. The ECM MIL output supplies the ground for the circuit.
Connections Required for Correct Operation
Vehicle Speed Sensor – 2 pin Connector not used for 8 speed transmision applications
Mass Air Flow (MAF) Sensor – 8 pin Connector
Electronic Throttle Control – 5 pin Connector
Manifold Absolute Pressure (MAP) Sensor – 3 pin Connector
Oxygen Sensors (2 total) – 4 pin Connectors
Knock Sensors (2 total) – 2 pin Connectors
Ignition Coils (8 total) – 4 pin Connectors
Crankshaft Position Sensor – 3 pin Connector
Accelerator Pedal Sensor – 6 pin Connector
Ignition Switch Input – 1 Wire
Fuel Pump Control – 2 Wires
Fuel Pump PWM Control and Shield - 3 wires
Battery Power (Stud at Fuse/Relay Center)
Cooling Fan Control – 2 Wires
Even Injectors and High Pressure Fuel Pump – 12 pin connector
Odd Injectors and Rail Pressure – 12 pin connector
Coolant Temperature and Oil Pressure – 10 pin connector, part of LOMA
Two Stage Oil Pump, Cam Position and Cam Phaser – 8 pin connector
Generator – 2 pin connector
ECM (3 total) – 73 pin connectors
Fuel Line Pressure – 3 pin connector
Fuel Pump Power Module (FPPM) – 16 pin connector
Optional Connections (Not required for operation)
Optional User Outputs Bulkhead – 12 pin Connector (12-way) Required for Chevy Performance Supermatic Transmission Control
Systems
Malfunction Indicator Lamp (MIL) – 1 Wire
Assembly Line Diagnostic Link (ALDL) – 16 pin connector
Top of Travel Clutch Switch/Brake Switch – 2 wires
Canister Purge Solenoid – 2 pin connector
Connections
Connect all engine/vehicle-side connectors before connecting the harness to the ECM. All engine/vehicle-side connectors are
functionally labeled, consult a service manual if necessary to determine connection locations (see following service manual
information).
Note: It may be easier to install the harness on the engine before installing the engine into the vehicle.
The harness includes a fuse/relay center containing all required fuses and relays, and also a 12-way bulkhead connector (with
sealed mating connector) which contains outputs that may be useful to the user (see 'Bulkhead Connector Outputs' section
below). The fuse/relay center should be mounted as high in the engine compartment as possible to avoid unnecessary splash
and road debris. Likewise, keep the 12-way bulkhead connector and diagnostic link connector (both connect from the fuse/relay
center) as high and protected as possible.
The 3 ECM connectors are indexed to connect only in the correct locations. Install by pressing down firmly until the connector is
seated, then pull the top slider bar down until it snaps and locks into place. The bar should slide easily and will not move unless
the connector is seated properly, do not use excessive force.
Attach the harness ground eyelets (5 total) to the engine block using the 4 bolts provided, ensuring the connections are clean
and secure, and attach the fuel pump wires from the FPPM to the power and ground of the pump. Two ground eyelets should be
attached under one bolt on the rear of the cylinder head.
LT4 Crate Engine Control System Kit
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
19331508
REV 01FE17
PART NO.
DATE
21JL16 Previous Revision are Archieved
01FE17 Revision - Blake Nye
7
SHEET
REVISION
45
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AUTH
N/A
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