Some 2009-2011 Ford E-Series vans may exhibit a no-start with or without erratic instrument cluster function such as all warning lights illuminated.
1. Remove the driver’s door scuff plate.
2. Unwrap the body electrical harness 14405 and check for corrosion in splice connections S301 and/or S302. Refer to wiring diagram, page 151-23, in the service manual. If corrosion is found, clean, repair and protect the wire harness splice connections. If no corrosion is found, refer to the symptom chart in the workshop manual, section 418-00, for normal diagnostics.