Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
3-6 Symptom Charts
No Diagnostic Trouble Codes (DTCs) Present Symptom
Charts
(Continued)
SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
|---|---|
Auto Start Stop System | GO to Pinpoint Test AA. |
Additional Testing | GO to Pinpoint Test Z. |
Additional Checks: — Some vehicles have a TQ_CNTRL PID available. Check this PID to determine if the PCM is reducing torque. The TQ_CNTRL PID may indicate which component or system, if any, is requesting a torque reduction. — Correct PCM vehicle identification (VID) block information. Refer to Section 2, Flash Electrically Erasable Programmable Read Only Memory (EEPROM) to carry out the Making Changes to the VID Block procedure. — Be aware of engine RPM and speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS or VSS). — Drivelines — Manual transmission or clutch — Charging system — Traction control system (if equipped) — A/C system (for surge with A/C on) — Cruise control system (for surge with cruise control on) | |
Brake Over Accelerator | CHECK for simultaneous brake pedal and accelerator pedal operation inadvertently activating the brake over accelerator feature. CHECK the BRKOVR_ACTION, BRKOVRD_POSS, and DIST_BRKOVRD PIDs for recent simultaneous brake pedal and accelerator pedal operation. ADVISE the customer that simultaneous brake pedal and accelerator pedal operation by the vehicle operator activates the brake over accelerator feature. REFER to Section 1, Powertrain Control Software for additional information. |
Chart 2
— Starting Concerns: Hard Start/Long Crank/Erratic Start/Erratic Crank
NOTE: For Escape/Kuga, Focus, Fusion, MKC, MKZ, and Transit Connect, check the BdyCM CRASH PID status. The CRASH PID status YES indicates a crash event has occurred, and may be the cause of the Hard Start/Long Crank/Erratic Start symptom. If the CRASH PID indicates YES, carry out the BdyCM Electrical Service Function Crash Status Reset to reset the PID status. Verify the Hard Start/Long Crank/Erratic Start symptom still exists before continuing with the following diagnostics.
SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
|---|---|
Battery Condition And Current Draw | REFER to the Workshop Manual Section 414-00, Charging System, Diagnosis And Testing to continue diagnosis. |
Secondary Ignition System | For KA 1.5L TIVCT or Fiesta 1.6L TIVCT, GO to Pinpoint Test JC. For all others, GO to Pinpoint Test JB. |
Fuel Delivery System | GO to Pinpoint Test HC. |
Cold Start System | GO to Pinpoint Test AB. |
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.