Chevrolet LT1 E-ROD Hoja De Instrucciones página 15

Make sure all intended engine and vehicle side connections have been made before proceeding to connect power.
Main Battery
Connection
Attach a 12 volt ignition switch feed from the vehicle to the pink ignition switch wire in the harness (this is required to enable the proper power-up
sequence of the ECM). This 12 Volt Power Source must be constant during crank to ensure the Engine Control Module remains powered during
engine cranking. This can be routed into the passenger compartment with the accelerator pedal connector and diagnostic link connector. Next,
connect battery power (minimum 8 gauge wire) to the horizontal stud on the fuse relay center. The other two studs are for accessories and are 50
amp fused and the harness installation is complete.
Additional features and bulkhead connector descriptions are also included below:
System Features
•
The Fuse/Relay center contains all required fuses and relays for proper engine operation. Spare fuse and relay openings are provided for possible
future customer use.
•
The Fuse/Relay center includes a malfunction indicator light (MIL) which will illuminate in the event of an engine fault code. See your GM
Performance Parts dealer to have this code retrieved at the diagnostic link connector in the fuse/relay center (using a Tech2 with GM
Performance Parts Diagnostics selection. Codes can also be retrieved using an aftermarket diagnostic scan tool capable of reading this
configuration.
Note that the MIL will illuminate when the vehicle is keyed-up - this is normal, and it will go out once the engine is started if
fault codes. A redundant MIL wire is included in the wiring harness to allow a light to be mounted inside the passenger compartment. The wire is
located in the wire bundle near the pedal connector and the ignition voltage.
•
The ECM needs to be controlled with a constant 12 volts even during cranking (not pulse width modulated).
•
Two cooling fans can be controlled by the ECM. Control is set to turn on the first 12 V fan at 97 Deg C (207 Deg F) coolant temperature and
the second at 105 Deg C (221 Deg F). The fan control wires are fused/relayed and must be connected to the fans. NOTE: If the wire is not
connected to a fan it will turn on the service engine soon light.
•
The fuel pump is controlled by the FPPM from data provided by the ECM. The control wire supplies a pulse width modulated (PWM) 12V and is
fused/relayed. It should be connected directly to the 12V side of the fuel pump.
•
The Gray fuel pump wire is fuel pump control, or positive. The Yellow with Black stripe is the ground or reference. The solid thin Black wire is for
shielding and should be attached to the fuel pump shielding pin. If no shielding pin is present, leave this wire unterminated (blunt cut) and
taped to the harness. Chevrolet Performance pump P/N 19303293 does NOT have a shielding pin.
•
A tachometer signal is included in the bulkhead connector (see below). This is a 4 pulse/rev output which may correspond to an 8-cylinder setup in
some tachometers or transmission controllers. Note the signal is a low voltage square wave, most tachometers or transmission controllers may
need a pull-up resistor in order to read the signal, similar to a 5000 ohm, ¼ watt resistor– this detail is left to the user. The following circuit has
worked for numerous devices – the resister value may need to be changed if your device does not read this output properly.
LT1 E-ROD Instruction Sheet
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
20MY19
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
03OC19
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
Auxiliary
Devices
-50 amp fused
Revision
Init Rel – Blake Nye
Rev – Blake Nye
PART No.
Rev 03OC19
Auth DR
Title
NA
NA
PART No.
there are no current
19418603
Installation Instructions
LT1 E-ROD
19418603
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