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.
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HOMESERVICE MANUALSSATURN2000LW2 AUTOMATICREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULESSYSTEM TESTSTEST A: SCAN TOOL DOES NOT POWER UP
2000 Saturn LW2 Automatic
Test A: Scan Tool Does Not Power Up
2000 Saturn LW2 AutomaticSECTION Test A: Scan Tool Does Not Power Up
NOTE:
Ensure scan tool operates correctly on a known good vehicle before proceeding.
- Check CD/DLC fuse (15-amp), located in underhood fuse block. See COMPONENT LOCATIONS . If fuse is okay, go to next step. If fuse is blown, replace fuse and check affected circuit for short to ground. See POWER DISTRIBUTION article in WIRING DIAGRAMS. Repair affected circuit as necessary and retest operation.
- Disconnect scan tool from DLC. Connect test light between ground and DLC terminal No. 16 (Orange wire). See Figure. If test light illuminates, go to next step. If test light does not illuminate, repair open or short to ground in Orange wire between DLC terminal No. 16 and CD/DLC fuse. See DATA LINK CONNECTORS article in WIRING DIAGRAMS. After repairs, recheck scan tool operation.
- Connect test light between battery voltage and DLC terminal No. 4 (Black wire). If test light illuminates, go to next step. If test light does not illuminate, repair open in Black wire between DLC terminal No. 4 and instrument panel ground splice pack. See GROUND DISTRIBUTION article in WIRING DIAGRAMS.
- Connect test light between battery voltage and DLC terminal No. 5 (Black/White wire). If test light illuminates, check for poor or loose connection at DLC terminals No. 4 (Black wire), No. 5 (Black/White wire) and No. 16 (Orange wire). Repair as necessary. If test light does not illuminate, repair open in Black/White wire between DLC terminal No. 5 and clean ground. See GROUND DISTRIBUTION article in WIRING DIAGRAMS.
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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.