Need diagram for 03 Cavalier. Anyone help? Thanks ~Ed
As far as I know nothing has changed for the ignition system from 2002 for the Chevy Cavalier:
| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|red |+ |ignition harness |
| STARTER|yellow |+ |ignition harness |
| IGNITION|pink |+ |ignition harness |
| ACCESSORY|orange |+ |ignition harness |
| SECOND ACCESSORY|brown |+ |ignition harness |
| POWER LOCK|lt. blue |*2 |either kick panel |
| POWER UNLOCK|white |*2 |either kick panel |
| LOCK MOTOR|gray | |drivers kick panel |
| UNLOCK MOTOR|tan | |drivers kick panel |
| DISARM DEFEAT|tan | |passengers kick panel |
| PARKING LIGHTS +|brown | |harness to rear, dkp |
| HEADLIGHTS|dk. blue |- |headlight switch |
| DOOR TRIGGER|grn/blk & lt. blue |- |*3 |
| TRUNK/HATCH PIN|black |- |trunk light |
|TRNK/HTCH RELEASE|BLACK/ white |+ |BCM *4 |
| TACHOMETER|PURPLE / white | |engine harness *1 |
| BRAKE WIRE|white |+ |stop light switch |
| HORN TRIGGER|black |- |steering column |
| WIPERS| | | |
| LF WINDOW UP/DN|dk. blue - brown |A |LF window motor in door |
| RF WINDOW UP/DN|lt. blue - tan |A |drivers kick panel |
| LR WINDOW UP/DN|dk. green - purple |A |drivers kick panel |
| RR WINDOW UP/DN|lt. green - purple |A |drivers kick panel |
Notes:
NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start *1 The engine harness is found next to the battery, below the radiator hose, just above the transaxle. *2 Non keyless cars, locks are 5wi (type C) and they are mastered from the passenger side switch. Keyless cars, locks are positive trigger (type A). Also found at BCM. *3 The GREEN/ black is located in the lower drivers kick panel. It catches the drivers door only. The light blue is located in the lower passenger kick panel, and catches the passenger door(s). Tap both wires and diode isolate each. Also found at BCM. *4 The BCM is located to the left of the steering column above the kick panel.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
I have a 2003 Cavalier and am trying to install auto start but it starts and then won't stay running..according to one thing it only has one ignition wire and another it has two..obviuosly it must have 2 what is the other ignition wire color?? also it doesn't have passlock like it says everywhere..so i'm confused! any help would be greatly apprciated!! Thank you!!
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Kristin
Most Chevy has a second ignition wire of WHITE. If the car starts but doesn't stay running it is because of the Passlock II system not being bypassed effectively. To test if the car has Passlock, go to the local hardware store and get a key blank cut and try to start the car. If it starts then no Passlock.... if it doesn't start then it has Passlock. The key blank costs $ 1.00 or less.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Well there isn't a chip on the key like most passlock systems..could it still have passlock? also i saw that it hsould be white but there wasn't a white wire at all? any other ideas? Thanks for the response
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Kristin
The 03 cavs are just like the 02's, Passlock 2 needs to be bypassed. There is no chip in the key for passlock 2, pk3 and vats have a "chip" in the key. Passlock sends the r code to the bcm when the key is turned in the cylinder. Need a 555L or pldata to bypass it.
Any help you can give me about bypassing it? like exactly what do i need to do??? Thanks for all your help
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Kristin
I suggest purcahsing a bypass module forthis type of system. Temperature variations can cause resistor chages in the DIY bypass modules that will not allow the car to start. The learning modules that we sell compensates for temperature variants and gives accurate resistor values to the Passlock computer everytime you RS the car.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA