Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1993 Eagle Vision ESiFACTORY OEM SERVICE PROCEDURE
Test 43E - Courtesy Light/Dash Switch Circuit Open
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
at end of article.
- Close right rear door. Turn courtesy light switch (located next to headlight switch) to on position. If courtesy lights operate by using dash courtesy light switch, system is operational with no trouble found. Perform VERIFICATION PROCEDURE VER-1. If courtesy lights do not operate, go to next step.
- With DRB-II, read courtesy light switch status. If DRB-II displays COURTESY SW: CLOSED, replace Body Controller Module (BCM). Module is located behind right kick panel. Perform VERIFICATION PROCEDURE VER-1. If DRB-II does not display COURTESY SW: CLOSED, go to next step.
- Disconnect headlight switch 8-pin connector from behind switch. Connect a jumper wire between courtesy light switch sense circuit (Yellow/Red wire) and ground circuit (Black wire) on headlight switch 8-pin connector terminals. Using DRB-II, read courtesy light switch status. If DRB-II displays COURTESY SW: CLOSED, replace dash-mounted courtesy light switch. Perform VERIFICATION PROCEDURE VER-1.
- If DRB-II does not display COURTESY SW: CLOSED, disconnect jumper wire used in step 3). Connect jumper wire between chassis ground and headlight switch 8-pin connector courtesy light switch sense circuit (Yellow/Red wire). Using DRB-II, read courtesy light switch status. If DRB-II displays COURTESY SW: CLOSED, repair open circuit in Black (ground) wire. Perform VERIFICATION PROCEDURE VER-1.NOTE: The BCM must be connected while performing step 5). Failure to do so may lead to incorrect circuit/system diagnosis.
- If DRB-II does not display COURTESY SW: CLOSED, disconnect jumper wire used in step 4). Access BCM connectors. Connect jumper wire between chassis ground and BCM Gray connector terminal No. 11, courtesy light switch sense circuit (Yellow/Red wire). Using DRB-II, read courtesy light switch status. If DRB-II displays COURTESY SW: CLOSED, repair open circuit in Yellow/Red wire between dash-mounted courtesy light switch and BCM. Perform VERIFICATION PROCEDURE VER-1. If DRB-II does not display COURTESY SW: CLOSED, replace BCM. Perform VERIFICATION PROCEDURE VER-1.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.