Real Fixes from SureTrack® provides expert-based knowledge captured from millions of documented repairs and community discussions. Read on to see how SureTrack can help you fix tricky issues that, like this 2015 Ford Transit, are not easily diagnosed with OEM information alone. SureTrack is available at no additional cost within ProDemand®.
Vehicle Model:
2015 Ford Transit-250 Base 3.7L Eng VIN M Eng CD 99M
Complaint:
Starter engages when the key is turned, but engine only cranks for a very short interval. Key must be cycled to crank again for another short interval. No crank signal.
Issue Description:
Scanned all modules; found code in PCM P06E9 – engine starter performance only code found. Removed starter relay and put a starter relay override to enable voltage drop checking while starter cranking the engine, since couldn’t get a true read using the key to crank the engine due to the short interval it cranks using the key.
The voltage drop was 0.7V pulling 170amps. Starter within normal specs, but a decision was made to replace starter – still getting same results from key short crank interval. Reviewing live data, noticed there was no signal being seen from the crank sensor (looking at RPM).
Replaced crank sensor with OEM sensor, rechecked for crank signal – 0 RPM still. Omh tested crank sensor connector back to PCM connector C175E ckp+ (yel/vio) pin #62 and ckp- (grn/wht) pin #63 – both had continuity with no resistance. Also attached a Snap-on Vantage Pro to ckp+ and ckp- to see if AC voltage was being generated and maybe not being processed by the PCM – no AC voltage seen.
Real Fix:
Problem resolved by removing 3 spark plugs from driver’s side cleaning them, putting them back in, and holding accelerator pedal to floor while cranking engine, then waiting 20 seconds before repeating the cranking process with accelerator fully depressed. Engine started; engine run condition improved about five of run time.
Scanned all modules; found unrelated DTC to the no-start condition for the O2 sensor. Looking at data O2 sensor B1S1 was frozen. Cleared all accelerator pedal DTC’s that were captured, rescanned after 30 minutes of run time and several key cycles — DTCs for accelerator didn’t returned.
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