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 MANUALSSATURN2000LW1 AUTOMATICREPAIR AND DIAGNOSISBODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULESDIAGNOSTIC TESTSDTC B2965: KEY-IN-IGNITION CIRCUIT OPEN
2000 Saturn LW1 Automatic
DTC B2965: Key-In-Ignition Circuit Open
2000 Saturn LW1 AutomaticSECTION DTC B2965: Key-In-Ignition Circuit Open
- Turn ignition on. Using scan tool, select KEY-IN-IGNITION SWITCH. Cycle ignition on and off while observing scan tool display. If scan tool display does not match actual ignition switch position, go to next step. If scan tool display matches actual ignition switch position, problem is intermittent. Check for poor connection to BCM or at ignition switch. See COMPONENT LOCATIONS . Repair as necessary and retest operation.
- Turn ignition off. Gain access to BCM. See COMPONENT LOCATIONS . Disconnect Gray 24-pin BCM connector J2. Connect DVOM between ground and Gray 24-pin BCM connector J2 terminal A11 (Light Green wire). See Figure. If continuity exists with key in ignition switch, go to next step. If continuity does not exist with key in ignition switch, go to step 4.
- Check for poor connection to BCM. Repair as necessary and retest operation. If BCM connection checks okay, replace BCM. See BODY CONTROL MODULE under REMOVAL & INSTALLATION. Retest operation.
- Check for open in Light Green wire between Gray 24-pin BCM connector J2 terminal A11 and ignition switch, open in ignition switch, open in ground circuit or poor connections at ignition switch. See WIRING DIAGRAMS . Repair as necessary and retest operation.
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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.