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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 29 (MODULE COMMUNICATIONS NETWORK)DIAGNOSTIC TESTSCOMMUNICATIONS NETWORKINSPECTION AND VERIFICATION
2009 Lincoln Navigator L RWD
Inspection and Verification
2009 Lincoln Navigator L RWDSECTION Inspection and Verification
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern.
- Visually inspect for obvious signs of electrical damage.VISUAL INSPECTION CHART
Electrical - Bussed electrical center (BEC) fuse(s):
- 42 (15A) (no communication with PCM)
- 45 (10A) (no communication with PCM)
- 56 (20A) (no communication with audio control module [ACM], satellite digital audio receiver system [SDARS] module)
- 59 (30A) (no communication with SJB)
- 63 (30A) (no communication with SJB)
- 65 (30A) (no communication with ABS module)
- 67 (30A) (no communication with SJB)
- Smart junction box (SJB) fuse(s):
- 6 (5A) (no communication with ACM)
- 8 (10A) (no communication with instrument cluster [IC], no power to scan tool)
- 16 (5A) (no communication with IC)
- 17 (10A) (no communication with restraints control module [RCM])
- 18 (10A) (no communication with ABS module)
- 19 (5A) (no communication with IC, PCM)
- Data link connector (DLC)
- Wiring harness
- Wiring, terminals or connectors
- Bussed electrical center (BEC) fuse(s):
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
NOTE:
Make sure to use the latest scan tool software release.
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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.