Some 2011 Ford Fiesta vehicles may exhibit a MIL on with DTC U029F set in the PCM, and/or a no-crank condition with no communication with the PCM.
Some 2011 Ford Fiesta vehicles may exhibit a MIL on with DTC U029F set in the PCM, and/or a no-crank condition with no communication with the PCM.
1. Disconnect the battery. 2. Inspect fuse F27 in the battery junction box for a possible open condition. Replace the fuse as required. 3. Remove the rear seat cushion. 4. Determine the vehicle build date. Is the date on or before 3/29/2011?
a. Yes….Install the in-line fuse included with the Natural Vacuum Leak Detection (NVLD) service kit. b. No….Inspect the in-line NVLD fuse. If the fuse is open, replace the 1A fuse and install a new NVLD service kit. If the fuse is closed, install the rear seat cushion and connect the battery. Refer to Powertrain Control/Emissions Diagnosis manual, pinpoint test HZ for normal diagnostics.
5. Install the rear seat cushion. 6. Connect the battery.
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