Question about 1988 Chevrolet Cavalier Z24
My interior/courtesy lights don't come on when I open the door. all the lights have been replaced and the the fuse has been replaced. is there a control or relay that operates these lights? dont no what to do
Will it come on when the passenger door is opened? or at least when you turn the interior light on with the switch on the dash? If not it could be a fuse. If it does then the switch button in the door or door jam is probably the culprit. If it does not.. Then I would suspect a fuse... A broken wire, Or the dome light needs to be replaced.. Meaning the housing itself.. A test light will tell you if you have current to the light or not with the door open... Or find where the wire meets the assembly and test or pierce the wire and see if it has current at the wire... If it has current before the assy but not where the bulbs hot wire comes in then it's the assy. If it has no current before the assemly then check the fuse... then pull the fuse and test the contacts... If none if those contacts light up the test light Then you don't have power to the fuse for that light and your problem is behind the fuse panel or a wire going to the fuse panel... Start at fuse.... If it's good and has power to both sides. Then go to the light assy itself. If it does come on when the passenger door is opened then go to the button in the door jam... If it doesn't check the wires on the back side of the assy. It's a process of elimination... but do it in this order to find it quicker
Posted on Apr 22, 2009
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Posted on Jan 02, 2017
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The interior lamp switch is in the ON position.
The keyless entry transmitter unlocks the doors (illuminated entry).
When the key is removed from the ignition switch with all of the doors closed, the courtesy lights light for approximately 25 seconds before fading out.
Battery positive voltage (B+) is applied at all times through the IP fuse block CTSY LP/PWR MIR fuse 6A via CKT 640 (ORN) through the body control module (MALL) to the courtesy lights via CKT 1732 (ORN). The MALL provides a ground through CKT 156 (WHT) for the courtesy lights under the following conditions:
The MALL receives an input from a door being opened.
The MALL receives an input from the interior lamp being turned ON.
The MALL receives an input from the doors being unlocked using the keyless entry transmitter.
The courtesy lamps then light.
When the courtesy lights are activated by opening and closing a door, the courtesy lights will remain on for approximately 25 seconds before fading out after all of the doors are closed. If the ignition switch is turned to START or RUN within the 25 seconds, the lights immediately begin to fade out. If a door is left open, the MALL removes battery positive voltage (B+) to the courtesy lights after 10 minutes. When the courtesy lights are activated by the interior lamp switch, the lights remain on as long as the interior lamp switch is in the ON position. When the courtesy lights are activated by unlocking the doors using the keyless entry transmitter, the lights remain on for approximately 40 seconds. If the doors are locked using the keyless entry transmitter within the 40 seconds, the lights immediately begin to fade out.
Body Control Module (MALL) Diagnostic Mode
For a detailed explanation of the MALL module diagnostic mode, refer to Body Control Module Cell 51.
What interior light ? Dome , courtesy lights etc....They don't work with switch, keyless entry , door opening ?
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