Chart 3
- Starting Concerns: No Start (Engine Cranks)
NOTE:
Extended cranking because of a no start can load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts. For applications with secondary air injection (AIR) systems, carry out the following after the no start has been repaired: Disconnect the electric AIR pump relay, run the engine
until the surplus fuel is used up, and reconnect the relay (disconnecting the relay may set a continuous memory PCM DTC that needs to be cleared).
| SYSTEM/COMPONENT | REFERENCE ( PINPOINT TEST - GASOLINE MODELS unless noted) |
|---|---|
| Add-on Anti-Theft Devices | Visual. CHECK with the customer. |
| Fuel/Ignition | LS and Thunderbird: GO to B: Fuel Pump Driver Module STEP KB53. |
| All others: GO to PINPOINT TEST A . |
|
| Applications without electronic throttle control - If the engine will start at part throttle: If the engine will not start at closed throttle, but will start and run normally at part throttle, check the idle air control (IAC) system. |
The engine will now start and run normally at part throttle: GO to PINPOINT TEST KE . |
| Exhaust System (restrictions) | GO to F: Catalyst Efficiency Monitor and Exhaust Systems STEP HF8. |
| Base Engine | REFER to ENGINE . |
| Additional Testing | GO to PINPOINT TEST Z . |