Painless Performance 60502 Manuale utente

P/N 60502 & 60505

1994/1995 GM LT1 FUEL INJECTION

WIRE HARNESS INSTALLATION

INSTRUCTIONS

Manual P/N 90517

PAINLESS PERFORMANCE PRODUCTS

2501 Ludelle Street - Fort Worth, Texas 76105-1036 - (817) 244-6898

E-Mail: [email protected] Web: painless@painlessperformance.com

We have attempted to provide you with as accurate instructions

as possible, and are always concerned about corrections or

improvements that can be made. If you have found any errors or

omissions, or if you simply have comments or suggestions

concerning these instructions, please write us at the address on

the cover and let us know about them. Or, better yet, send us a

fax at (817) 244-4024 or e-mail us at

[email protected]. We sincerely appreciate

your business.

Perfect Performance Products, LLC shall in no event be liable in contract or tort (including

negligence) for special, indirect, incidental, or consequential damages, such as but not limited to,

loss of property damage, or any other damages, costs or expenses which might be claimed as the

result of the use or failure of the goods sold hereby, except only the cost of repair or

replacement.

P/N 90517 Painless Wiring Manual

March 16, 2005

TABLE OF CONTENTS

1.0 INTRODUCTION.......................................................................................................................... ii

2.0 ABOUT THESE INSTRUCTIONS............................................................................................... ii

3.0 TOOLS NEEDED.......................................................................................................................... 1

4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES........................................... 1

4.1 TRANSMISSION FUNCTION...................................................................................... 1

4.2 GET TO KNOW THE ENGINE THAT YOU ARE USING........................................... 2

5.0 GENERAL INSTALLATION INSTRUCTIONS.......................................................................... 3

5.1 GROUNDING THE VEHICLE....................................................................................... 3

5.2 ROUGH INSTALLATION............................................................................................... 4

5.3 HARNESS ATTACHMENT........................................................................................... 4

5.4 TERMINAL INSTALLATION INSTRUCTIONS.......................................................... 4

6.0 GM 94 & 95 LT1 SYSTEM WIRE HARNESS INSTALLATION............................................... 5

6.1 CONTENTS OF THE 60502 OR 60505 WIRE HARNESS KIT..................................... 5

6.2 SPECIFIC CIRCUIT CONNECTIONS........................................................................... 5

6.3 ENGINE GROUP INSTALLATION............................................................................... 9

6.4 TAIL SECTION INSTALLATION................................................................................. 13

7.0 TROUBLE-SHOOTING INSTRUCTIONS................................................................................... 13

7.1 THE "CHECK ENGINE" LIGHT................................................................................... 14

7.2 RETRIEVING TROUBLE CODES FROM THE COMPUTER..................................... 14

7.3 WHEN TO CALL "PAINLESS WIRING" TECH LINE................................................ 16

LIST OF FIGURES

Figure 6.1 Diagnostic Link Connector (DLC) & Check Engine Light ............................................. 5

Figure 6.2 Brake Switch Connection ............................................................................................... 6

Figure 6.3 Brake Switch Relay......................................................................................................... 7

Figure 6.4 Gear Indicator Switch ..................................................................................................... 7

Figure 6.5 Air Pump Relay Connector ............................................................................................. 8

Figure 6.6 Canister Purge Solenoid ................................................................................................. 8

Figure 6.7 Air Pump Connection ..................................................................................................... 9

Figure 6.8 Fuel Pump Relay Connector............................................................................................ 9

Figure 6.9 EGR Solenoid ................................................................................................................. 10

Figure 6.10 Knock Sensor .................................................................................................................. 10

Figure 6.11 Oxygen Sensor ................................................................................................................ 11

Figure 6.12 MAP Sensor .................................................................................................................... 11

Figure 6.13 Injectors 1, 3, 5, 7............................................................................................................. 11

Figure 6.14 Injectors 2, 4, 6, 8 ............................................................................................................ 11

Figure 6.15 TPS Sensor ...................................................................................................................... 11

Figure 6.16 IAC................................................................................................................................... 11

Figure 6.17 MAF Sensor .................................................................................................................... 12

Figure 6.18 Distributor Connection..................................................................................................... 12

Figure 6.19 Ignition Module................................................................................................................ 12

Figure 6.20 Coil................................................................................................................................... 12

Figure 6.21 ECT Sensor....................................................................................................................... 12

Figure 6.22 IAT Sensor........................................................................................................................ 12

Figure 6.23 VSS.................................................................................................................................... 13

Figure 6.24 Transmission Connection ................................................................................... .............. 13

Figure 7.1 Fuse Identification.............................................................................................................. 14

LIST OF TABLES

Table 4.1 Compatible Parts.............................................................................................................. 3

Table 6.1 Dash Section Connections................................................................................................ 8

Table 6.2 Engine Section Connections............................................................................................. 10

Table 6.3 Tail Section Connections.................................................................................................. 13

Table 7.1 Diagnostic Trouble Codes................................................................................................ 14 & 15

1.0 INTRODUCTION

You have purchased what we at Painless Performance Products believe to be the most up-to-date and easiest-to-

install automotive fuel injection harness on the market. It is designed for easy installation, even if you have no

electrical experience.

This harness is designed to be a complete wiring system for the fuel injection system on General Motors 1994 and

newer LT1 injected engines and to control the 4L60E transmission. This includes all wiring that is needed by the

computer to run and control the injection system and transmission. A module has been included to bypass the vehicle

anti theft system (VATS) incorporated in the computer. When using this harness on a '96 or '97 engine you must

replace the coil, coil output wire and knock sensor with the parts from a '92 - '95 engine.

NOTE: The use of a 40 pulse Vehicle Speed Sensor, such as the one that comes

standard in the 4L60E transmission, is required when using a 1994 or newer

computer for operation of emission devices. The use of any other style transmission,

such as a 350 or 400 Turbo, which cannot operate a 40-pulse sensor, will require the

use of an earlier style computer. The use of a 4L60E will also require the use of an

electronic speedometer because of the absence of a cable drive in the transmission.

Usually, the computer, relays and fuse block can easily be mounted under the dash. Most of the wiring in the harness

has been pre-terminated to the proper connector and all wire has been GM color-coded. All wiring is TXL, 600 volt,

and 125 degree centigrade with cross-link insulation.

This fuel injection system harness have been divided into three major groups:

ENGINE GROUP Includes wiring for the fuel injectors, distributor, and sensors.

DASH GROUP Includes ignition feed wires, assembly line diagnostic link (DLC) connector,

check engine light, computer wiring and connectors, brake switch wiring, gear

shift indicator wiring, tachometer wiring, air pump, canister purge, VATS and

fuse block.

TAIL GROUP Include VSS wiring, transmission wiring (if applicable) and power wire for fuel

pump.

2.0 ABOUT THESE INSTRUCTIONS

These instructions provide information for the installation of the 60502 LT1 (94 & 95) Fuel Injection Harness Kit.

The contents of these instructions are divided into major Sections, as follows:

1.0 INTRODUCTION

2.0 ABOUT THESE INSTRUCTIONS

3.0 TOOLS NEEDED

4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES

5.0 GENERAL INSTALLATION INSTRUCTIONS

6.0 60502 LT1 (94 & 95) FUEL INJECTION HARNESS KIT

8.0 TROUBLE-SHOOTING INSTRUCTIONS AND TROUBLE CODES

Sections are further divided into Paragraphs and Steps. Throughout, the Figure numbers refer to illustration and

the Table numbers refer to information in table form. These are located in or near the sections or paragraphs to

which they correspond. Always pay careful attention to any notes or any text labeled CAUTION.

3.0 TOOLS NEEDED

In addition to your regular tools, you will need, at least, the following:

Crimping tool NOTE: USE A QUALITY TOOL TO AVOID OVER-CRIMPING.

Wire stripper

Continuity tester CAUTION: DO NOT USE A TEST LIGHT TO TEST THE COMPUTER OR SENSOR

WIRING OR YOU WILL DAMAGE THE COMPUTER.

Electric drill

1 5/8" Hole saw (for the rubber grommet in the firewall)

4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES

The installation of your harness kit will consist of two parts:

~ The physical routing, positioning, and securing of the harness, wire groups, and individual wires and

connectors.

~ The proper electrical connection of the individual circuits.

We cannot tell you how to route the harness in your automobile. That depends a great deal upon the particular make

of the automobile and what extent you want to secure and conceal the harness. We do offer some general guidelines

and routing practices starting in Paragraph 5.3, general installation instructions in Section 5.0, and precise

instruction concerning the electrical connections you will have to make beginning in Section 6.0. To help you begin

thinking through the installation of your wire harness, read the following sections:

4.1 TRANSMISSION FUNCTION

If you are not using the 4L60E transmission, read Paragraph 4.1.1, then skip to Paragraph 4.1.3. If you ARE

going to use 4L60E, then skip Paragraph 4.1.1, and start at paragraph 4.1.2.

4.1.1 If you ARE NOT using a 4L60E transmission, tape off and store the light blue/black and pink

(brake switch) wires in the dash group and the 13-position (transmission) round connector in the

tail section.

4.1.2 If you ARE going to use a 4L60E transmission then you MUST have a two-position vehicle speed

sensor (VSS), and the correct brake switch. These are necessary to make the transmission work

correctly. The brake switch should be closed (electrically connected) when the brakes ARE NOT

being applied and open (not electrically connected) when the brakes ARE being applied. This is

the opposite of a standard brake light switch. If you are using a pressure brake switch, a SPDT

relay must be installed to unlock the converter when the brakes are applied. The vehicle speed

sensor lets the computer know how fast the wheels are turning.

4.1.3 Regardless of whether you use the 4L60E or not, the vehicle speed sensor (VSS) and park/neutral

indicator switch must be used and is needed by the computer so it can command the emissions

control devices on the engine. This part is necessary if you want your car to be street-legal.

NOTE; Emission devices

This harness has provisions for 3 emission devices, which are EGR solenoid, Air Pump relay and a

Canister Purge solenoid. We have rolled up the canister purge solenoid wiring and air pump

wiring in the dash section and may be left there if these items are not to be used. If you

plan on using the canister purge solenoid and air pump you will need to route these wires

out to the engine compartment and install an air pump relay. Secure the wires to the main

harness using the tie wraps supplied.

To keep the check engine light from coming on you will need to plug in a canister purge

solenoid and air pump relay to the wires in the dash section. (The computer looks for

signals from these controls and does not care if the actual devices are installed.)

4.2 YOU SHOULD GET TO KNOW THE PARTICULAR ENGINE YOU ARE

USING:

NOTE: The 94 & 95 LT1 engine has two oxygen sensors, one on the right side and one on the left side

of the engine. This system has four rectangular connectors at the computer. A 16188051

computer is required for proper operation.

4.2.1 PPPI recommends the use of the following parts. See Table 4.1. These will meet all requirements

and are compatible with PPPI harnesses. The numbers given are GM and AC Delco part numbers.

You must use the computer listed on table 4.1 with our harness.

4.2.2 Familiarize yourself with the harness by locating each of the harness groups and by looking at the

connectors on the wire ends.

4.2.3 Decide where and how the computer, fuse block and relays will be mounted. PPPI wire harness

kits are designed to mount either under the dash or in the kick panel on the right side. They must

be no further apart than the wiring will allow (approx. 16 inches).

4.2.4 A good exercise is to lay out the wire harness on the floor beside your vehicle and identify all the

connectors and wires.

4.2.5 You will want to route the harness through and around open areas. Inside edges provide extra

protection from hazards and also provide places for tie wraps, clips and other support.

4.2.6 Route the harness away from sharp edges, exhaust pipes, and the hood, trunk and door hinges.

4.2.7 Plan where harness supports will be located. Use a support approximately every 6 inches unless

the harness routes under the floor carpet.

4.2.8 Allow enough slack in the harness at places where movement could possibly occur (body to frame,

frame to engine, etc.).

4.2.9 The wires should be bundled into harness groups. Use tape, nylon ties or poly split loom.

Table 4-1 Compatible Parts

5.0 GENERAL INSTALLATION INSTRUCTIONS

CAUTION:

~ DO NOT DISCONNECT THE BATTERY OR THE COMPUTER CONNECTORS WHILE THE

IGNITION IS ON.

~ DO NOT SHORT ANY WIRES IN THIS HARNESS TO GROUND (WITH THE EXCEPTION OF

LABELED GROUND WIRES) OR DAMAGE TO THE COMPUTER WILL RESULT.

~ GIVING OR RECEIVING A "JUMP START" MAY DAMAGE THE COMPUTER.

~ DO NOT USE A TEST LIGHT WHEN TESTING COMPUTER SENSORS OR COMPUTER

CIRCUITS. DAMAGE TO THE COMPUTER WILL RESULT!

~ WHEN ROUTING THE WIRES FOR THE VEHICLE SPEED SENSOR (IF USED) MAKE

CERTAIN THAT THEY ARE AT LEAST 12 INCHES AWAY FROM ANY IGNITION WIRING

(SPARK PLUG WIRES, ETC.).

Notes:

~ There is a normal, small current drain on these fuel injected systems.

~ Each connector in this harness is different and will not fit in the wrong place. NEVER FORCE ANY

CONNECTOR.

~ When connecting the plugs to the computer USE EXTREME CARE to make sure none of the pins in

the computer are or become bent.

~ The fuel pump you are using MUST be rated at a minimum of 45 PSI (pounds per square inch).

5.1 GROUNDING THE VEHICLE

A perfectly and beautifully wired automobile will nevertheless have problems if everything is not properly grounded.

Don't go to the effort to installing a quality wire harness only to neglect proper grounding.

Note: The installer of this harness is responsible for all ground wires not provided with this part.

5.1.1 Connect a ground strap or cable (minimum of a 4 Ga. wire) from the negative battery terminal to

the chassis (frame).

5.1.2 Connect a ground strap (minimum of a 4 Ga. wire) from the engine to the chassis (frame). DO

NOT RELY UPON THE MOTOR MOUNTS TO MAKE THIS CONNECTION.

5.1.3 Connect a ground strap from the engine to the body.

LT1 Fuel Injection Harness (94 & 95) Part # 60502 or 60505

Main Computer............................Service#16188051 EGR. Solenoid................................ Delco# 214-396

Brake Switch.....................................GM# 25524845 Gear Indicator Switch..................GM# 15705308 or

Intake Air Temperature.....................GM# 12110319 Delco #D2286A

Ignition Module.............................Delco# D-1986-A MAP Sensor ....................................GM# 16137039

Fuel Pump Relay...GM# 14089936 Delco# 15-8240 Idle Air Control ................................GM# 17113099

Coolant Temperature Sensor ..........GM# 25036979 Knock Sensor ...................................Delco# 213-96

Coil.......................................................Delco# D-573 Air Pump Relay....GM# 14100455 Delco# 15-8426

Oxygen Sensors...GM# 25312184 or Delco# AFS 75 Air Pump......................................Delco# 2604-4885

TPS Sensor.........................................GM# 17106680 MAF Sensor.....................................Delco# 213-252

Canister Purge Solenoid GM# 1997201 Delco# 214-565

NOTE: Components with part numbers other then the ones listed may plug into the 60502 or 60505

harness, but the part numbers MUST match the ones on this list for proper operation. An adapter is

included to adapt the 4-pin square IAC connector to the '94-'96 flat 4-pin connector.

5.2 ROUGH INSTALLATION

CAUTION: DISCONNECT THE POWER FROM YOUR VEHICLE BY REMOVING THE

NEGATIVE BATTERY CABLE FROM THE BATTERY.

Note: Make no wire connections or permanent mounting of any kind at this time.

5.2.1 Position the computer and sensors in their intend locations.

5.2.2 Drill a 1-5/8" hole for the firewall grommet near the computer for the engine group and tail section

to pass through.

5.2.3 Route the engine group and tail section through the hole. Push the grommet (already installed on

the harness) into the hole until it is seated.

5.2.4 Route the dash group over to the driver's side of the car.

5.2.5 Route the fuse block and relays to the place they will be mounted.

5.3 HARNESS ATTACHMENT

Note: Harness routing and shaping will be a time-consuming task. Taking your time will enhance

the beauty of your vehicle. Please take your time and be patient.

5.3.1 Permanently mount your computer. You should mount the fuse block and relays at this time.

5.3.2 Mold harness groups to the contour of the dash, engine, frame, etc. Remember to route harness

away from sharp edges, exhaust pipes, hinges, and moving parts.

5.3.3 Attach harness groups to your automobile with clips or ties starting at the computer and working

your way outward.

Note: Do not tighten tie wraps or mounting devices at this time. Make all harness attachments

LOOSELY.

5.3.4 When used every 1-1/2" or so on the visible areas of the harness, colored plastic wire ties make a

very attractive assembly. Otherwise, a tie installed in other areas every 6" or so will hold the wires

in place securely. REMEMBER TO TAKE YOUR TIME.

5.4 TERMINAL INSTALLATION INSTRUCTION

Note: In the following steps you will be making the circuit connections. Before you start, you

should carefully read Sections 6.0, and continually refer to the wire charts, DOUBLE

CHECKING your length calculations before cutting any wire or making any connections.

These directions are for the wires, which do not have a connector already, installed on them.

5.4.1 Have all tools and connectors handy.

5.4.2 Select the correct terminal for the wire and application.

5.4.3 Determine the correct wire length and cut the wire. Remember to allow enough slack in the

harness and wires at places where movement could occur. DOUBLE CHECK YOUR

CALCULATIONS.

5.4.4 Strip insulation away from wire. Only strip as much insulation off as necessary for the type of

terminal lug you are using.

Note: In the following step, make sure that the terminal is crimped with proper die in the crimping

tool. An improper crimp will not make a good connection. DO NOT OVER-CRIMP.

5.4.5 Crimp the terminal onto the wire.

5.4.6 Connecting the wires and connectors throughout the harness is a simple process. Make sure that

each wire is properly routed and then attached. DO NOT ATTACH THEN ROUTE

AFTERWARD.

5.4.7 When all the wires are attached, tighten the mounts and ties to secure the harness permanently.

5.4.8 Attach the connectors to the computer. BEING VERY CAREFUL NOT TO BEND ANY PINS.

5.4.9 After all connections have been made throughout the harness, connect the battery to the vehicle.

CAUTION: BE SURE THE IGNITION IS OFF WHEN YOU RECONNECT THE BATTERY

OR YOU WILL DAMAGE THE COMPUTER.

6.0 GM 94 & 95 LT1 SYSTEM WIRE HARNESS INSTALLATION INSTRUCTIONS

6.1 CONTENTS OF THE 60502 OR 60505 WIRE HARNESS KIT

Take inventory to see that you have everything you are supposed to have in this kit. If anything is missing, contact

the dealer where you obtained the kit or contact Painless Performance at (817) 244-6898. The kit should contain the

following items:

~ The main wire harness with the connectors already on the ends of most of the wires.

~ Fuel Injection Installation Instructions P/N 90517 (This Booklet).

6.2 SPECIFIC CIRCUIT CONNECTIONS

Note: If you have not already done so, read sections 4.0 and 5.0 of these instructions and think

through the installation of the harness before securing or cutting any wires.

6.2.1 DASH SECTION INSTALLATION

The wires in this group consist of the diagnostic link connector (DLC) (SEE FIGURE 6.1), the check

engine light (pre-mounted into a mounting bracket), and 13 other wires.

Note: You may need to connect the check engine light wires to their mates in the wire harness.

CAUTION: DO NOT MAKE ANY CONNECTIONS WHILE THE COMPUTER IS PLUGGED

INTO THE HARNESS.

Note: Wire color (Example: Blk/Wht) is one wire with a stripe. The second color (the stripe) may

not be bold. Observe all two-color wires closely.

A. Find a suitable location to mount the DLC connector (using the bracket that the light is mounted

in) that will allow access to the front of the connector and still allow you to see the light while

driving.

B. Mount the DLC connector using the bracket containing the check engine light in the place

selected.

C. Locate the pink ignition hot activation wire, labeled "fuse block ignition B+ (18 Ga.) for the fuse

block and attach it a 12V fused power source where there is power

FIGURE 6.1 DLC Connector & Check Engine Light

WHEN THE KEY IS IN THE START AND RUN POSITION. This is the power wire for the fuel

injection harness. If the pink wire is connected correctly, the check engine light will come on when

the ignition is "ON or START".

D. Locate the Orn/Blk and Blk/Wht wires in the dash group. These two wires are for the Park/Neutral

INDICATOR Switch, NOT the Neutral Safety Switch. If you have a GM column then you can

use the combination switch P/N 15679680 and wire it as described in paragraph 2 or 3 below.

The ORN/BLK wire needs to be grounded in "Park and Neutral" and ungrounded in "Drive". This

can also be done with a toggle switch or a switch on the parking brake.

CAUTION: DO NOT CONNECT THESE WIRES USING DIRECTIONS FROM DIFFERENT

PARAGRAPHS. YOU MAY DAMAGE THE COMPUTER.

D.1. If you are NOT using a vehicle speed sensor (VSS) or Park/Neutral Indicator Switch then you will

need to connect these two wires together.

Note: If you do this, the computer will stop controlling the exhaust gas recirculation (EGR)

solenoid. THIS WILL PREVENT THE SYSTEM FROM BEING STREET-LEGAL.

D.2. If you are going to use the recommended switch for the computers benefit ONLY, then you will

wire it as shown in Illustration A.

D.3. The recommended switch is a combination reverse light AND neutral safety switch. You may use

it for these purposes AND the computer signal IF you wire it EXACTLY as shown in

Illustration B.

D.4. You may want to install your own switch. This switch must connect the Orn/Blk wire to ground

only when the car is in PARK OR NEUTRAL. You may or may not want to use the Blk/Wht

wire. The other end of the Blk/Wht wire is already grounded throughout the harness.

E. The single light blue wire is the wire that lets the computer know when the brake is applied. If you

ARE NOT using a 4L60E then you will tape off and store this wire. If you ARE using the 4L60E

transmission then you will have to install an electrical switch described in Paragraph 4.1.2. The pink

wire provides power for this switch.

FIGURE 6.2 Brake Switch Connection

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