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HOMESERVICE MANUALSFORD2018FUSION ENERGI TITANIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEMODE 6MODE 6 - 2017-18 FORD - HYBRID ELECTRIC VEHICLESEVAP SYSTEM MONITOR ENGINE OFF COMPONENTS CHECKSNOTES
2018 Ford Fusion Energi Titanium

EVAP System Monitor Engine Off Components Checks: Notes

2018 Ford Fusion Energi TitaniumSECTION Notes

Additional malfunctions that are identified as part of the evaporative system integrity check are as follows:

The Canister Purge Valve (CPV)  output circuit is checked for opens and shorts (P0443)

NOTE: that a stuck closed CPV generates a P04ED, a leaking or stuck open CPV generates a P1450.
CANISTER PURGE VALVE CIRCUIT CHECK OPERATION

DTCs P0443 - Evaporative Emission System Purge Control "A" Circuit
Monitor Execution engine off, continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds to obtain smart driver status
TYPICAL CANISTER PURGE VALVE CIRCUIT CHECK MALFUNCTION THRESHOLDS

P0443: open/shorted

TheEvap Fuel Tank Switching Valve (EVAPSV)  control circuit is checked for opens and shorts (P2418). This component is the TPC (Tank Pressure Control Valve).

NOTE: that a stuck closed TPC generates a P2451; a stuck open TPC generates a P2450.
EVAP SWITCHING VALVE CHECK OPERATION

DTCs P2418 - Evap Switching Valve Circuit
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds to obtain smart driver status
EVAP SWITCHING VALVE CHECK MALFUNCTION THRESHOLDS

P2418 (Evap Switching Valve Circuit): open/shorted

The Evap Fuel Tank Switching Valve (EVAPSW)  control circuit is checked for opens and shorts (P04B0). This component is the RV (Refueling Valve).

NOTE: that a stuck closed RV generates a P04B4; a stuck open RV generates a P2450.
EVAP SWITCHING VALVE CHECK OPERATION

DTCs P04B0 - Refueling Vapor Control Valve Circuit
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds to obtain smart driver status
EVAP SWITCHING VALVE CHECK MALFUNCTION THRESHOLDS

P04B0 (Refueling Valve Circuit): open/shorted

The ELCM Leak Detection Pump Control Circuit  is checked for opens and shorts and functionally.

ELCM PUMP CONTROL CHECK OPERATION

DTCs P2401 - EVAP System Leak Detection Pump Control Circuit Low
P2402 - EVAP System Leak Detection Pump Control Circuit High
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds to obtain smart driver status
TYPICAL ELCM PUMP CONTROL CHECK MALFUNCTION THRESHOLDS

P2401/P2402 - output driver open/shorted
ELCM PUMP CONTROL FUNCTIONAL CHECK OPERATION

DTCs P2401 - EVAP System Leak Detection Pump Control Circuit Low
P2402 - EVAP System Leak Detection Pump Control Circuit High
Monitor Execution during Phase 0 of evap monitor leak check
Monitor Sequence Evap monitor leak detection condition met
Sensors OK Not Applicable
Monitoring Duration 360 seconds in Phase 0, 5 seconds on Phase 1
TYPICAL ELCM PUMP CONTROL FUNCTIONAL CHECK MALFUNCTION THRESHOLDS

P2401: pressure at the end of 360 sec of warm-up time in Phase 0 too low; > -2.0 inH2 O / -498.18 Pa.
P2402: pressure increasing in Phase 1 after pump shut off for 5 sec; > 4.0 inH2 O / 996.35 Pa.
ELCM PUMP CONTROL FLOW CHECK OPERATION

DTCs P043E - EVAP System Leak Detection Reference Orifice Low Flow
P043F - EVAP System Leak Detection Reference Orifice High Flow
Monitor Execution once per key off, after entry conditions have been met during pre-key off drive cycle
Monitor Sequence during Phase 0 of evap monitor leak check
Sensors OK not applicable
Monitoring Duration 60 seconds in Phase 0
TYPICAL ELCM PUMP CONTROL FLOW CHECK MALFUNCTION THRESHOLDS

P043E: stabilized pressure at the end of Phase 0 too low <= -20.2 inH2 O / 5031.6 Pa
P043F: stabilized pressure at the end of Phase 0 too high > -2.8 inH2 O / > -697.45 Pa.

The Evap Leak Detection Pump Vacuum Switching Valve / (Change Over Valve)  control circuit is checked for opens and shorts and functionally.

EVAP VACUUM SWITCHING VALVE CIRCUIT CHECK OPERATION

DTCs P24BE - EVAP Leak Detection Pump Vacuum Switching Valve Control Circuit Low
P24BF - EVAP Leak Detection Pump Vacuum Switching Valve Control Circuit High
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds to obtain smart driver status
EVAP VACUUM SWITCHING VALVE CIRCUIT CHECK MALFUNCTION THRESHOLDS

P24BE/P24BF - output driver open/shorted
EVAP VACUUM SWITCHING VALVE FUNCTIONAL CHECK OPERATION

DTCs P24C0 - EVAP System Leak Detection Pump Vacuum Switching Valve Stuck On
P24C1 - EVAP System Leak Detection Pump Vacuum Switching Valve Performance/Stuck Off
Monitor Execution P24C0 during Phase 0 of evap monitor leak check, P24C1 during Phase 2 of evap monitor leak check
Monitor Sequence Evap monitor leak detection condition met
Sensors OK P0443, P2418, P24BE, P24BF, P2401, P2402, P144B, P04ED, P1450, P24BA, P24BB, P0451, P0452, P0453, P0454, P2610, P0112, P0113, P043E, P043F, P24C0, P24C1, P2450, P2451 P24BC, P2610, P0112, P0113
Monitoring Duration 65 seconds in Phase 0, 2 seconds in Phase 2
EVAP VACUUM SWITCHING VALVE CHECK MALFUNCTION THRESHOLDS

P24C0: rate of change of pressure too low; < 1.2 inH2 O / 174.36 Pa
P24C1: rate of change of pressure too high; > 4.0 inH2 O / 996.35 Pa.

The EVAP System Leak Detection Pump Pressure Sensor  input circuit is checked for opens and shorts, out of range values and noisy readings.

LEAK DETECTION PUMP PRESSURE SENSOR CHECK OPERATION

DTCs P24BA - EVAP System Leak Detection Pump Pressure Sensor Circuit Low
P24BB - EVAP System Leak Detection Pump Pressure Sensor Circuit High
P24B9 - EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance
P24BC - EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent (noisy)
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 20 seconds for electrical malfunctions, 10 seconds for noisy sensor test
TYPICAL LEAK DETECTION PUMP PRESSURE SENSOR CHECK MALFUNCTION THRESHOLDS

P24BA (Circuit low): < 168.96 in H2 0 / 42.08 kPa.
P0453 (Circuit high): > 496.93 in H2 0 / 123.78 kPa.
P24B9 (Reference out of range)
> -1.5 to -5.5 in H2 O (function of BARO) OR
< -17.5 to -21.5 in H2 O (function of BARO)
P24BC (noisy): open circuit, short circuit or > 25.0 in H2 O / 6.227 kPa change between samples, sampled every 100 milliseconds, filtered fault level of 25% will set code in 10 seconds

The Fuel Tank Pressure Sensor  input circuit is checked for out of range values (P0452 short, P0453 open), noisy readings (P0454 noisy) and an offset (P0451 offset). This component is the FTPTHP (Fuel Tank Pressure Transducer - High Pressure). High Pressure Fuel Tank Pressure

High Pressure Fuel Tank Pressure Sensor Transfer Function

Vout = (0.062247 xP_abs+1.492219)
Volts  A/D Counts in PCM  Fuel Tank Pressure, kPa  Fuel Tank Pressure, Inches H 2  O 
0.317 51 -19 -76.28
0.423 102 -17.17 -68.93
1.035 235 -7.35 -29.51
2.054 419 9.03 36.25
3.073 614 25.40 101.97
4.50 921 48.32 193.98
4.616 970 50 200.73
FUEL TANK PRESSURE SENSOR CHECK OPERATION

DTCs P0452 - Fuel Tank Pressure Sensor Circuit Low
P0453 - Fuel Tank Pressure Sensor Circuit High
P0454 - Fuel Tank Pressure Sensor Intermittent/Erratic (noisy)
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 5 seconds for electrical malfunctions, 10 seconds for noisy sensor test
TYPICAL FUEL TANK PRESSURE SENSOR CHECK MALFUNCTION THRESHOLDS

P0452 (High Pressure Fuel Tank Pressure Sensor Circuit Low): < 0.317 volts
P0453 (High Pressure Fuel Tank Pressure Sensor Circuit High): > 4.61. Volts
P0454 (Fuel Tank Pressure Sensor Circuit Noisy): open circuit, short circuit or > 25 in H2 O change between samples, sampled every 100 milliseconds, filtered fault level of 25% will set code in 10 seconds
FUEL TANK PRESSURES SENSOR OFFSET CHECK OPERATION

DTCs P0451(HEV Only) - Fuel Tank Pressure Sensor Range/Performance (offset)
Monitor Execution once per driving cycle
Monitor Sequence No P0443 or P1450, P2402, , P2450, P2451, P2418, P24BF, P24C0 DTCs
Sensors OK not applicable
Monitoring Duration < 1 second
TYPICAL FUEL TANK PRESSURE SENSOR OFFSET CHECK ENTRY CONDITIONS

Entry Condition  Minimum  Maximum 
Ignition key on, engine off, engine rpm   0 rpm
Purge Duty Cycle   0%
Engine Off (Soak) Time 240 min  
Fuel Tank Pressure Sensor Variation During Test   0.5 in H2 O
Battery Voltage 11.0 Volts  
Not a refueling event 
Tank Pressure -17.8 In H2 O 16 In H2 O
TYPICAL FUEL TANK PRESSURE SENSOR OFFSET CHECK MALFUNCTION THRESHOLDS

Fuel tank pressure at key on, engine off is 0.0 in H2 O +/- 1.7 in H2 O

The Fuel Level Input  is checked for out of range values (opens/ shorts). The FLI input is obtained from the serial data link from the instrument cluster. If the FLI signal is open or shorted, the appropriate DTC is set, (P0462 circuit low and P0463 circuit high).

Finally, the Fuel Level Input is checked for noisy readings. If the FLI input changes from an in-range to out-of-range value repeatedly, a P0461 DTC is set.

FUEL LEVEL INPUT CHECK OPERATION

DTCs P0460 - Fuel Level Sensor A Circuit
P0461 - Fuel Level Sensor A Circuit Noisy
P0462 - Fuel Level Sensor A Circuit Low
P0463 - Fuel Level Sensor A Circuit High
Monitor Execution continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration 30 seconds for electrical malfunctions
TYPICAL FUEL LEVEL INPUT CHECK MALFUNCTION THRESHOLDS

P0460 or P0462 (Fuel Level Input Circuit Low): < 5 ohms (< 1 A/D count)
P0460 or P0463 (Fuel Level Input Circuit High): > 200 ohms (>1022 A/D counts)
P0461 (Fuel Level Input Noisy): > 40% change between samples, > 100 occurrences, sampled every 0.100 seconds

The FLI signal is also checked to determine if it is stuck. "Fuel consumed" is continuously calculated based on PCM fuel pulsewidth summation as a percent of fuel tank capacity. (Fuel consumed and fuel gauge reading range are both stored in KAM and reset after a refueling event or DTC storage.) If the there is an insufficient corresponding change in fuel tank level, a P0460 DTC is set.

Different malfunction criteria are applied based on the range in which the fuel level sensor is stuck.

In the range between 6% and 93%, a 17.5% difference between fuel consumed.

In the range below 6%, a 27.5% difference between fuel consumed.

In the range above 93%, a 80.5% difference between fuel consumed.

FUEL LEVEL INPUT STUCK CHECK OPERATION

DTCs P0460 - Fuel Level Input Circuit Stuck
Monitor Execution Continuous
Monitor Sequence None
Sensors OK Not Applicable
Monitoring Duration Between 6 and 93%, monitoring can take from 100 to 120 miles to complete
TYPICAL FUEL LEVEL INPUT STUCK CHECK MALFUNCTION THRESHOLDS

P0460 (Fuel Level Input Stuck):
Fuel level stuck at greater than 93%: > 80.5% difference in calculated fuel tank capacity consumed versus change in fuel level input reading
Fuel level stuck at less than 6%: > 27.5% difference in calculated fuel tank capacity consumed versus change in fuel level input reading
Fuel level stuck between 6% and 93%: > 17.5% difference in calculated fuel tank capacity consumed versus change in fuel level input reading
RENDER: 1.0x

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