03 Saturn Ion
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=6307
Printed Date: July 21, 2025 at 10:56 AM
Topic: 03 Saturn Ion
Posted By: diabloed
Subject: 03 Saturn Ion
Date Posted: December 05, 2002 at 11:31 PM
Was just wondering if anyone has access or has come across a wiring diagram for a 2003 Saturn Ion?
Replies:
Posted By: securinu
Date Posted: December 06, 2002 at 10:16 AM
Passlock bypass on the Saturn ION The Saturn ION features a PASSLOCK circuit which differs from the traditional Passlock 1 & Passlock 2 circuits in most GM cars. There are 2 Passlock wires located at the ignition switch (White & WHITE/ black). Procedure:
1. Start the vehicle with the key.
2. Cut the WHITE wire and strip back both ends.
3. Use a Multi-Meter set for Ohms, and put one lead to the ECM side of the WHITE wire, and the other end connectto the WHITE/ BLACK (uncut wire).
4. Turn the key to the START position (vehicle will not crank), measure the resistance on your Meter.
5. Using a resistor to match you reading, wire in 2 relays as shown. NOTE: Though this can be done with 1 relay, doing so would cause the following problem: When the vehicle is put in‘Idle mode’ or "Continuous mode", such as is necessary for installation with Manual transmission models, the ‘THEFT’light will come on.
Posted By: securinu
Date Posted: December 06, 2002 at 10:23 AM
12volts constant = red
starter = none on automatic yellow at cluth pedal for manual tranny
ignition 1 =blue
ignition 2 =
ignition 3 =
accessory 1 =brown
accessory 2 =
park lights =brown @ switch +
door pin =lt. green / black - @ driver doorpin
door lock =white - thru 1.5k resistor @driver kick
door unlock =white - one wire same as lock
factory disarm =
horn =black - @ column
tach =white on coil on top of engine
this vehicle has no starter wire for auto trans ,this vehicle will start when the remote starter accessory wire shuts down for crank do not connect your starter wire from the start module to anything...ok is GM is getting really stupid or what now no starter wire???
Posted By: diabloed
Date Posted: December 06, 2002 at 11:37 AM
Thanks alot SECURINU if you don't mid me asking where did you get that info, i have done everything including calling DEI. Also did it say where the ignition wires were? Do they go above the steering column to the top of the dash? Thanks again.
Posted By: securinu
Date Posted: December 06, 2002 at 3:58 PM
all they say is ignition harness , but they all say the 12volt is at a module under the dash not the orange wire at the harness.
Posted By: Chris Luongo
Date Posted: December 08, 2002 at 3:01 PM
securinu, great info! Also, https://www.carsound.com/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=get_topic&f=3&t=001270#000001 here is my post at carsound.com with what little information I found on this car.
Posted By: JWorm
Date Posted: December 11, 2002 at 10:39 PM
securinu, can you post a pic of the relay setup? if you don't have a pic, a description would be fine. Thanks.
Posted By: opj38
Date Posted: December 18, 2002 at 7:07 PM
hey 2003 sunfire with passlock 1, i need a diagram to bypass with a relay and a resistor, please help opj38@hotmail.com
Posted By: Velocity Motors
Date Posted: December 19, 2002 at 1:29 AM
opj38 .... Please post your request on a new posting. Try to avoid posting on another member's post unless you wish to add to what the post was initially for. You will get more responses if you have a header for your request under your own post. BTW: You have a Passlock II system and here is your answer to your post: ( Just clikc here ) Passlock II Bypass Diagram ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: themagicone
Date Posted: January 22, 2003 at 5:05 PM
I like to add these are real blast to drive. If you get a chance take one of these for a spin. Due to the smaller sterring wheel and redesinged stearing and suppension system it handles like a $60,000 sports car.
Posted By: joyride2k
Date Posted: January 22, 2003 at 7:58 PM
Can you post how the relays are supposed to be wired up?
Posted By: themagicone
Date Posted: January 22, 2003 at 8:13 PM
what relays, theres a lot of things that need relays on this post
Posted By: joyride2k
Date Posted: January 23, 2003 at 7:36 AM
#5 in the seond post of this thread.."5. Using a resistor to match you reading, wire in 2 relays as shown."
Posted By: themagicone
Date Posted: January 23, 2003 at 8:40 AM
goto bypasskit.com and buy a pldata unit or any of the passlock bypasses. Saturns are very fussy on the passlock wiring and if you wire it with 2 relays you have the chance it locking up most of the time.
Posted By: joyride2k
Date Posted: January 23, 2003 at 3:45 PM
But as stated before it's passlock "like", and you can't even use a pldata on all cars with passlock 2, ex. malibu. Unless someone has used a data on these?
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