Chart 12

Warning Indicators: PTO, MIL, TCIL, Temperature Warning Indicator Lamp or Gauge (applications with CHT sensor only), Check Fuel Cap Indicator Lamp, ETC Indicator Lamp
PTO not working correctly

NOTE:

If the symptom is both a MIL on and exhaust emission test failure, GO directly to CHART 11 .
If the engine is a no start, GO directly to CHART 3 .
If the engine runs rough at idle, GO directly to CHART 1 .

SYSTEM/COMPONENT	REFERENCE ( PINPOINT TEST - GASOLINE MODELS unless noted)
Verify the fuel filler cap is properly tightened.	Visual
Trucks with power take off (PTO) and MIL concern: PTO input to the PCM	E-Series and F-Series: GO to PINPOINT TEST FB .
PTO Indicator never on, always on: PTO circuits	E-Series and F-Series: GO to B: Power Take Off (PTO) STEP FB6
PTO not working correctly: PTO operation	E-Series and F-Series: GO to PINPOINT TEST FB .
MIL always on when the engine is running (no DTCs): MIL circuits	Crown Victoria/Grand Marquis, Explorer Sport Trac, and Ranger: GO to PINPOINT TEST NB .
	All others: REFER to INSTRUMENT CLUSTER .
TCIL always on when the engine is running (no DTCs): TCIL circuits	Crown Victoria/Grand Marquis, Excursion, Explorer Sport Trac, E-Series, and Ranger: GO to B: Transmission Control Switch (TCS)/ Transmission Control Indicator Lamp (TCIL) STEP TB7.
	All others: REFER to INSTRUMENT CLUSTER .
MIL never on: (including the bulb check when the engine is first started): MIL circuits	Crown Victoria/Grand Marquis, Explorer Sport Trac, and Ranger: GO to B: Malfunction Indicator Lamp STEP NB3.
	All others: REFER to INSTRUMENT CLUSTER .
TCIL never on: TCIL circuits	Crown Victoria/Grand Marquis, Excursion, Explorer Sport Trac, and Ranger: GO to B: Transmission Control Switch (TCS)/ Transmission Control Indicator Lamp (TCIL) STEP TB9.
TCIL never on: TCIL circuits	All others: REFER to INSTRUMENT CLUSTER .
Temperature warning indicator lamp or gauge concerns (applications with CHT sensor only): Engine cooling system or lamp circuits	If engine is overheating: REFER to ENGINE COOLING . Be aware that since a PCM DTC was not received, the PCM has not attempted to turn the lamp on.
	If engine operates at normal temperature: GO to L: Cylinder Head Temperature (CHT) Sensor STEP DL28.
Check fuel cap indicator lamp always on or off: Check the fuel indicator lamp circuits	Crown Victoria/Grand Marquis, Explorer Sport Trac, and Ranger: Indicator Lamp Always On, GO to X: Evaporative Emission (EVAP) Monitor and System STEP HX44. Indicator Lamp Always Off, GO to X: Evaporative Emission (EVAP) Monitor and System STEP HX45.
	All others: REFER to INSTRUMENT CLUSTER .
ETC indicator lamp never/always on: ETC indicator lamp circuits	REFER to INSTRUMENT CLUSTER .
Additional Testing	GO to PINPOINT TEST Z .