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.
Original table alignment retained · Scroll horizontally if needed
HD17 CHECK THE GENERATOR FOR EXCESSIVE ELECTRICAL NOISE
Note: If the generator/regulator is electrically noisy, the noise decreases when the B+ connector is disconnected.
• Ignition ON, engine running.
• Monitor the generator for an audible electric noise.
• Ignition OFF.
• Generator/regulator B+ connector disconnected.
• Ignition ON, engine running.
• With the engine running, determine if the generator is still noisy.
Does the noise remain constant when the B+ connector is disconnected?
Yes | No |
|---|---|
GO to HD18 . | REFER to the Workshop Manual Section 414- 00, Charging System, and DIAGNOSE the generator is noisy symptom. |
HD18 CHECK THE CKP HARNESS FOR INTERMITTENT CONCERNS
Note: Damaged CKP wires or other physical damage to the harness may cause an intermittent short in the CKP circuit.
• Ignition OFF.
• Visually check for damaged CKP wires or other physical damage to the CKP harness.
Is a concern present?
Yes | No |
|---|---|
REPAIR as necessary. Clear the PCM DTCs. REPEAT the self-test. | GO to HD19 . |
HD19 CHECK THE PHYSICAL CONDITION OF THE CRANKSHAFT PULSE WHEEL
Note: DTC P0315 is set when the PCM is unable to learn and correct for the mechanical variations in the crankshaft pulse wheel tooth spacing (the allowable correction tolerances are exceeded).
• Inspect the crankshaft pulse wheel for damaged teeth.
• Inspect the crankshaft pulse wheel for wobble.
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.