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 MANUALSLINCOLN2009NAVIGATOR L RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISDTC P1703: - BRAKE SWITCH OUT OF SELF-TEST RANGE
2009 Lincoln Navigator L RWD
DTC P1703: - Brake Switch Out Of Self-Test Range
2009 Lincoln Navigator L RWDSECTION DTC P1703: - Brake Switch Out Of Self-Test Range
DTC P1703: - BRAKE SWITCH OUT OF SELF-TEST RANGE
| Description: | Indicates that during the key on engine off (KOEO) self-test, the brake pedal position (BPP) signal was high, or during the key on engine running (KOER) self-test, the BPP signal did not cycle high and low. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check for correct function of the stoplamps. Using the scan tool, check the BPP PID. The stoplamps and PID should toggle on and off with brake pedal activation. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test FD . | ||
RENDER: 1.0x
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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.