Question about 2004 Saturn ION
My power door locks stopped working. When I press the button, i can hear a clicking sound in my dash below the radio, but the locks will not work. Also my trunk release stopped working at the same time. I could not find a fuse labelled for either the power locks or the trunk release.
The locks don't work from any switch or just the driver's door switch ? The door locks are controlled by the BCM - body control module , that's were the clicking you hear is coming from there are no fuse's that are marked for the locks , fuse's for the BCM .
Door Lock System Components
The power door lock system consists of the following components:
• Driver door lock switch -- Uses a single signal wire for both lock and unlock switch activations
• Front passenger door lock switch -- Uses a single signal wire for both lock and unlock switch activations
• BCM -- Class 2 module which requires programming when replaced
• Reversible door lock actuators in each of the doors
• BCM PWR 15A fuse -- Located in the BCM fuse panel, supplies power for the door lock system
The BCM PWR fuse supplies battery positive voltage to the BCM for the door lock system.
The BCM supplies and monitors a reference voltage to the door lock switch through the door lock switch lock/unlock signal circuit. The door lock switch also receives a constant ground source. If a door lock switch is placed in the lock position, the reference voltage is taken directly to ground and the BCM senses 0.0 volts on the signal circuit. If a door lock switch is placed in the unlock position, the reference voltage is taken to ground through a 15k ohm resister that is internal to the door lock switches and senses approximately 2.9 volts on the signal circuit. This is how the BCM determines what portion of the door lock switch was activated.
The BCM, upon receipt of a door lock switch lock or unlock signal, will switch the appropriate door lock actuator control circuits to battery positive voltage. The opposing side of the door lock actuators are connected to ground internally within the BCM through the other door lock actuator control circuit and the doors will lock or unlock appropriately.
Vehicles without keyless entry have two internal drivers in the BCM to control the door lock actuators. All door lock and all door unlock. Vehicles equipped with keyless entry have three internal drivers in the BCM. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked by itself using the keyless entry transmitter.
Body Control Module (BCM)
Lower center of the I/P, just below the HVAC control assembly
Posted on Mar 04, 2018
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Posted on Jan 02, 2017
SOURCE: 2003 Saturn ION 2 trunk Problem
there is a manual switch that is located near the trunk latch for a safty lockout it might have been switched by accident look to make sure.hope this helps.
Posted on Jun 21, 2009
If only the trunk release is not working, did you check to see if the little lever arm switch on the trunk lid at the latch assembly is switched to enable the release? Mine came switched to the 'Off' position when I bought it and it took me a few days to figure that one out.
Posted on Jun 26, 2009
The remote won't ework because the problem is in the vehicle. Just for test purposes and possible remedy. Remove and clean the negative battery cable. Ensure a clean , tight connection. Then find the body ground. Yhis ground is locted usually at the top rear of the engine. .I's a snall stainless steel strap bolted to the engine and fire wall, This must olsobe clean with a good contack. Might as well clean the + cable and connection on the battery while you are there. Good luck and keep me posted olease. Good Luck, Ned_
Posted on Oct 03, 2009
Testimonial: "Thank you for your prompt response I will try that first thing in the morning and let you know!"
you should hear a click from the solenoid when you apply the brakes. If your brake lights don't work, your shift lock release won't either. There is a bypass method for emergencies in your owner manual. Check fuse for brake lights. And switch on brake pedal
Posted on Nov 08, 2011
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