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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
Chevrolet Performance 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 or 2009 CTS LSA
Manual Trans Configuration). Codes can also be retrieved using an
aftermarket diagnostic scan tool capable of reading this configuration.
NOTE: The MIL will illuminate when the vehicle is keyed-up — this
is normal, and it will go out once the engine is started if there are
no current fault codes. A redundant MIL wire is included in the
wiring harness to allow a light to mounted inside the passenger
compartment. The wire is located in the wire bundle near the
pedal connector and the ignition voltage.
• A cooling fan is controlled by the ECM. Control is set to turn on a 12 V
fan at 97 Deg C (207 Deg F) coolant temperature. The fan control wire
is fused/relayed and must be connected directly to your fan.
• The fuel pump is controlled by the ECM. The control wire supplies
12 V and is fused/relayed and should connect to the 12 V side of the
fuel pump.
• A tachometer signal is included in the bulkhead connector (see below).
This is a 2 pulse/rev output which may correspond to a 4-cylinder
setup in some tachometers or transmission controllers. Note the signal
is a low voltage square wave, some 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.
Bulkhead Connector Pin C
Engine Speed – Tach Out
Bulkhead Connector Pin L
Ignition Voltage
NOTE: When connected to the Chevrolet Performance Supermatic
Connect and Cruise Harness the pull up resister is not required
for the Transmission Controller.
• An oil pressure output is included in the bulkhead connector and can
be used for a pressure gauge if desired (see below for scaling). The oil
pressure sensor is required for the system to operate properly. If you
are using the optional oil pressure signal in the bulk head connector,
ensure the harness is plugged into the oil pressure sensor.
• A vehicle speed output is included in the bulkhead connector for use
with auto-scaling speedometers. The vehicle speed sensor connector
in the harness must be attached to a variable reluctance type speed
sensor (typical of most late model GM automatic transmissions) for
this to function.
5.3L Crate Engine Control System
TITLE
Pull High Tach Out
5000Ω
Bulkhead Connector Outputs
Bulk Head Connector Pin L
15326849 Connector
12191818 Female Terminal
15366021 Seal
15305171 Plug
15430903 TPA
15317832 CPA
Load View or Rear View
Position
Circuit
#
2501A
A
-
B
121
C
818
D
432B
E
-
F
2500A
G
331B
H
486B
J
40F
K
5292
L
50B
M
Bulkhead connector outputs - Terminals for the included mating
connector can be acquired at a GM dealership in the Delphi Terminal
Service kit. Terminals are Delphi part number 15326269 (GM part
number 19167018), and wire seals are Delphi part number 15366021
(white seal). At many dealerships these can be found at the Service
Desk.
• GMLAN Communication Link (TAN/BLACK STRIPE [+], TAN [-]) –
This provides the GMLAN communication messages containing engine
operating parameters for potential use in future add on modules – any
current integration of this is left to the user. Can be used with a LAN
dash or an electronic dash readout display.
• Tachometer Signal (WHITE) – This is a 2 pulse/rev output (see
features above).
• Vehicle Speed (BROWN) – This is a non scaled output for use with
auto-scaling speedometers and will not function unless a vehicle
speed sensor (VSS) is connected to the ECM through the VSS wire in
the harness.
• MAP (LT GREEN) – This is an output for use in gauges or for load
indication in transmission controllers (any connection must be to
high-impedance device). The output is a 0-5 Volt signal ranging from
10 – 105 KPa (1.5 – 15.2 psia). Use the ground wire in the bulkhead
connector as the low reference (ground).
19258097
REV 28JN12
PART NO.
Mating Connector
15326854 Connector
15304701 Male Connector
15366021 Seal
15305171 Plug
15430903 TPA
Description
Color
Wire
Gage
22
Tan
GMLAN High Speed (-)
-
Plug
Empty
22
White
Engine Speed
22
Brown
Vehicle Speed - Out
22
Lt. Green
MAP Signal
-
Plug
Empty
22
Tan/Black
GMLAN Low Speed (+)
22
Tan/White
Oil Pressure Signal
22
Purple
Throttle Pos #2 (0.5v - 4.5v)
18
Orange
Battery Power Fuse
18
Pink
Ignition "OnPower
18
Black
Ground
SHEET
4
25
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