2001 LS1 Wiring harness schematic

[RedHeartbeat]

Okay, checked out my wiring harness conversion and found quite a few wires removed and I wonder if this will affect my PCM's ability to function properly.

2001 LS1 5.7L with 4L60E A4 Transmission

Blue connector....

23 - Low Reference
25 - HO2S Low Signal Bank 2 Sensor 2
28 - HO2S Low Signal Bank 1 Sensor 2
32 - CPP Switch Signal ? what is CPP?
65 - HO2S High Signal Bank 2 Sensor 2
68 - HO2S High Signal Bank 1 Sensor 2
70 - Oil Level Switch Signal

Red Connector....

4 - Air Injection Reaction Solenoid Relay - Coil - Control
13 - Cruise Control Engage Signal
34 - Evaporative Canister Purge Solenoid Control
36 - AIR Pump Relay Control
37 - Cruise Control Inhibit Signal
44 - Reverse Lock out Solenoid
45 - Evaporative Canister Vent Solenoid Control
53 - Ignition Retard Signal
54 - Fuel Level Sensor Signal
64- Fuel Tank Pressure Sensor Signal


If you know any of these connectors that will affect drivability in my conversion, let me know. Allen, this data is really focused towards my PCM you are setting up for me. Please remove any feedback that might be affected by these wires being removed from my harness during the conversion.

I paid good money for this conversion. Everyone else gets this data for free.

[farmtruc]

ok, i'll take note of the removed sensors and remove them from the pcm.

thanks for the update,

[Gordfire]

I know that the MIL, (malfunction indicator lamp), applies ground to the check engine light when there are certain DTCs, (diagnostic trouble codes), set.

[Gordfire]

CPP, clutch pedal position, don't think you have to worry about that one.

[honkydaddy]

I'd put the mil control back in.Believe Oscar took that out so your light wouldn't come on.If you don't have that the light won't come on when you have a problem.May not be too important,but I'd like to know when somethings happening.

[RedHeartbeat]

Well, that was a bone headed thing to do. Why would someone take away the only link you have to tell if something is wrong?

[honkydaddy]

Hell if I know

Took all that other stuff out and didn't even have Allen disable them.

Guess it's just quality workmanship

[RedHeartbeat]

Yeah, good luck passing a smog test. you get failed automatically if they hook up your OBD2 and they get errors for missing sensor feedback.

[RedHeartbeat]

Here we go again.....

If you ever thought about doing your own harness conversion......

2001 LS1 5.7L 4L60E four speed automatic

Removed pins and wires from Blue PCM connector....
23, 25, 28, 32, 65, 68 and 70

Removed pins and wires from Red PCM connector....
4, 7, 13, 34, 36, 37, 44, 45, 53, 54 and 64

Bundle these wires together and route into the cab of vehicle.....

Blue 33 - Purple - TCC Brake Switch Signal - to brake switch - normal 12v positive and Zero
Volts when brake pedal is depressed .
Blue 34 - Orange/Black - Neutral Safety Switch
Blue 46 - Brown/White - Malfunction Indicator Light

Red 17 - Green/White - A/C request switch
Red 30 - Dk Blue - Fuel Enable Control - to VATS if not disabled in the PCM
Red 42 - Tan or Tan/Black - TCC Solenoid Valve Control
Red 50 - Green/White - Vehicle Speed Sensor Signal

Six fuse power block....

12V - Red - always "ON" from battery to three fused outlets

1. 30 amp 12V from fuse to terminal 87 for low fan relay
2. 30 amp 12V from fuse to terminal 87 for high fan relay
3. 10 amp 12V from fuse to PCM Blue 20 and 57

12V - Pink - from ignition "ON" switch to three fused outlets

1. 20 amp 12V from fuse to A/C relay terminal 87
2. 15 amp 12V from fuse to PCM Connector Blue 19
3. 15 amp 12V from fuse to Fuel Pump Relay terminal 87

Bosch Type Relay 1.
Low Speed Fan Relay
Terminal 85 connect to PCM Blue 42 - Dark Green
Terminal 30 Connect to Fan positive
Terminal 86 Connect to constant 12V Power Supply
Terminal 87 Connect to Switched 12V Power Supply

Bosch type Relay 2.
High Speed Fan Relay
Terminal 85 connect to PCM Red 33 - Dark Blue
Terminal 30 Connect to Fan positive
Terminal 86 Connect to constant 12V Power Supply
Terminal 87 Connect to Switched 12V Power Supply

Bosch type Relay 3.
Fuel relay
Terminal 85 connect to PCM Red 9 - Dark Green/White
Terminal 30 Connect to fuel pump 12V input
Terminal 86 Connect to Ground - black/white
Terminal 87 Connect to Switched 12V Power Supply

Bosch type Relay 4.
A/C relay
Terminal 85 connect to PCM Red 43 - Green/White - A/C Clutch Relay Control
Terminal 30 Connect to PCM Red 18 - Dark Green - A/C Compressor Clutch Supply Voltage
Terminal 87 Connect to switched 12V Power Supply
Terminal 86 Connect to PCM Blue 19 - Pink - Ignition 1 Voltage

My only concern is Relay 4. I don't see the logic there. It seems to me that Terminal 86 - Blue 19 - should have 12 Volts at the switch unless it is 12 Volts output from the PCM instead of input into the PCM. GM has always used the pink wire as switched power, red as constant 12V and Purple as the main starter solenoid lead.


Oh, and when it's all said and done get Allen to burn you a custom PCM. He'll know this one well by the time it's finally done.

[RedHeartbeat]

Well, just recieved a PCM custom tuned by Allen for my LS1 conversion. ALLEN, YOU THE MAN!!!! All I had to do was plug it in and hit the key. I have been fighting this thing for way too long. Allen has come to the rescue. Don't ever trust Oscar at Dynatech Motorsports to do your LS1 PCM because he doesn't know anything compared to Allen. I can't wait to finish this thing up so I can take it for a spin.