Symptom Chart(s): Starting System
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| Condition | Possible Sources | Actions |
|---|---|---|
| The engine does not crank -- without Push-button Start | Refer to Pinpoint Test | GO to Pinpoint Test A |
| The engine does not crank -- with Push-button Start | Refer to Pinpoint Test | GO to Pinpoint Test B |
| The engine cranks slowly | Refer to Pinpoint Test | PERFORM the starter system component test. REFER to Starter Motor - Positive Circuit Test |
| The engine cranks but will not start | Fuses PCM Fuel pump Fuel pump relay Run/start relay Starter Wiring |
Refer to Engine Controls - Symptom Charts (Except Diesel & Hybrid) |
| Unusual starter noise | Refer to Pinpoint Test | GO to Pinpoint Test C |
| The starter spins but the engine does not crank | Starter motor | INSPECT the starter motor mounting and engagement. REPAIR as necessary. |
| Damaged flexplate | INSPECT the flexplate for damaged, missing or worn teeth. REPAIR as necessary. | |
| The starter does not disengage from the flexplate | Starter relay Wiring, terminals or connectors |
REMOVE the starter relay. If the engine stops cranking, INSTALL a new relay. If the engine continues to crank, REPAIR circuit CDC35 (BU/WH) for a short to voltage. |