Driveability
| System/Symptom | Oasis Number | Chart Number |
| Starting Concerns | Hard Start/Long Crank/Erratic Start/Erratic Crank | | Chart 2 |
| No crank | | Chart 22 |
| No start (engine cranks) | | Chart 3 |
| Unique Idle Concerns | Slow return to idle | | Chart 4 |
| Rolling idle | | Chart 1 |
| Fast idle | | Chart 5 |
| Low/Slow idle | | Chart 6 |
Driveability - Performance While Driving Concerns
| System/Symptom | Oasis Number | Chart Number |
| Stalls/Quits | Idle/Acceleration/Cruise | | Chart 1 |
| Deceleration | | Chart 6 |
| Stall after start | | Chart 1 |
| Runs Rough | | | Chart 1 |
| Misses | | Chart 1 |
| Buck/Jerk | | Chart 1 |
| Hesitation/Stumble | | Chart 1 |
| Surge | | Chart 1 |
| Backfires | | Chart 7 |
| Lack/Loss of Power | | Chart 8 |
| Spark Knock | | Chart 9 |
DRIVEABILITY - PERFORMANCE WHILE DRIVING CONCERNS
Additional Driveability Concerns
| System/Symptom | Oasis Number | Chart Number |
| Diesels/Runs On | | | Chart 5 |
| Poor Fuel Economy | | Chart 10 |
| Emissions Compliance | | Chart 11 |
ADDITIONAL DRIVEABILITY CONCERNS
Electrical
| System/Symptom | Oasis Number | Chart Number |
| Warning Indicators | Malfunction indicator lamp (MIL) | | Chart 12 |
| Transmission control indicator lamp (TCIL) | | Chart 12 |
| Power take off (PTO) | | Chart 12 |
| Temperature warning indicator or gauge (for vehicles equipped with a cylinder head temperature (CHT) sensor only) | | Chart 12 |
| Check fuel cap | | Chart 12 |
| Powertrain malfunction indicator (wrench) | | Chart 12 |
| Instrumentation | Tachometer inoperative | | Chart 14 |
| Speedometer/odometer inoperative | | Chart 14 |
| Boost gauge indicates higher than normal boost | | Chart 14 |
| Fuel gauge inoperative | | Chart 14 |
| System/Symptom | Oasis Number | Chart Number |
| Oil System Concerns | High oil consumption | | Chart 15 |
| Leaks | | Chart 15 |
| Cooling System Concerns | Electric cooling fan does not operate (low, high or variable speed) | | Chart 16 |
| Cooling fan clutch does not operate | | Chart 16 |
| Electric cooling fan always runs | | Chart 17 |
| Exhaust System Concerns | Visible smoke | | Chart 18 |
| Odor (sulfur or rotten egg smell) | | Chart 21 |
| Fuel System Concerns | Odor, engine compartment | | Chart 19 |
| Engine Noise (under hood) | | | Chart 20 |
Driveline
| System/Symptom | Oasis Number | Chart Number |
| Automatic Transmission (A/T) Shift Concerns | Upshift | | Chart 13 |
| Downshift | | Chart 13 |
| Engagement | | Chart 13 |
Power Take Off (PTO)
| System/Symptom | Oasis Number | Chart Number |
| PTO Concerns | Not working correctly | | Chart 12 |
Chart 1
- Stalls/Quits: Idle, Acceleration, Cruise, Stall After Start
- Runs Rough
- Misses
- Buck/Jerk
- Hesitation/Stumble
- Surge
- Unique Idle Concerns: Rolling Idle
Note. For some vehicle applications, the engine may stall if left running while refueling. Advise the customer to turn the engine off while refueling to avoid contamination or damage to the evaporative emission (EVAP) system.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Check the following parameter identifiers (PIDs): DPFEGR (if equipped) (hot idle value within 0.15 volt of the ignition ON, engine OFF value) LONGFT1 or LONGFT2 (value between -20 and +20%) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volt of battery voltage) | DPFEGR PID value not within 0.15 volt of ignition ON, engine OFF value: GO to PINPOINT TEST HH: EXHAUST GAS RECIRCULATION SYSTEM MODULE (ESM) . LONGFT1 or LONGFT2 value low (-): Continue diagnosis. Concentrate checks in areas that would cause the engine to run rich. LONGFT1 or LONGFT2 value high (+): Continue diagnosis. Concentrate checks in areas that would cause the engine to run lean. VPWR not between 10.5 and 17.0 volts: REFER to the appropriate service information article, Charging System and CARRY OUT the Inspection and Verification to continue diagnosis. VPWR between 10.5 and 17.0 volts, but not within 0.5 volt of battery voltage: CHECK the B+ voltage to the powertrain control module (PCM) power relay. CHECK the VPWR circuit between the PCM and the PCM power relay. CHECK the PWR GND circuits. |
| Fuel Injection System | For vehicles that run rough at idle check the INJx_F PIDs (the x indicates the injector number) with the ignition ON, engine running. There is 1 INJx_F PID for each engine cylinder. All INJx_F PIDs must indicate NO FAULT. The INJx_F PIDs indicate a fault (an injector circuit concern is indicated). For Edge 2.0L, Escape 1.6L, Escape 2.0L, Explorer 2.0L, Explorer 3.5L GTDI, F-150 3.5L, Fiesta 1.0L, Fiesta 1.6L GTDI, Flex 3.5L GTDI, Focus, Fusion 1.5L, Fusion 1.6L, Fusion 2.0L, MKS 3.5L, MKT 2.0L, MKT 3.5L, MKZ 2.0L, Taurus 2.0L, Taurus 3.5L GTDI and Transit Connect 1.6L, GO to PINPOINT TEST DI: DIRECT FUEL INJECTION FUEL INJECTOR . For all others, GO to PINPOINT TEST KG: FUEL INJECTOR . |
| Mass Airflow (MAF) Sensor | GO to PINPOINT TEST DC: MASS AIRFLOW (MAF) SENSOR . |
| Manifold Absolute Pressure (MAP) Sensor | For Explorer 3.5L GTDI, F-150 3.5L, Flex 3.5L GTDI, MKS 3.5L, MKT 3.5L and Taurus 3.5L GTDI, GO to PINPOINT TEST DN: PRESSURE AND TEMPERATURE SENSORS . For all others, GO to PINPOINT TEST DM: MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR . |
| Secondary Ignition System | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Exhaust System | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| EVAP System | GO to PINPOINT TEST HX: EVAPORATIVE EMISSION (EVAP) SYSTEM AND MONITOR . |
| Charging System | REFER to the appropriate service information article, Charging System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Universal Heated Oxygen Sensor (HO2S) | GO to PINPOINT TEST DZ: UNIVERSAL HEATED OXYGEN SENSOR (HO2S) . |
| Automatic Transmission | REFER to the appropriate service information article, Automatic Transmission, Diagnosis By Symptom to continue diagnosis. |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Intake Air System | GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
| Auto Stop Start System | GO to PINPOINT TEST AA: AUTO STOP START . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
| Additional Checks: Some vehicles have a TQ_CNTRL PID available. Check this PID to determine if the PCM is reducing torque. The TQ_CNTRL PID may indicate which component or system, if any, is requesting a torque reduction. Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) to carry out the Making Changes to the VID Block procedure. Be aware of engine RPM/speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS, VSS, or OSS). Drivelines Manual transmission or clutch Charging system Traction control system (if equipped) A/C system (for surge with A/C on) Cruise control system (for surge with cruise control on) | REFER to the applicable service information article. |
| Brake Over Accelerator | CHECK for simultaneous brake pedal and accelerator pedal operation inadvertently activating the brake over accelerator feature. CHECK the BRKOVR_ACTION, BRKOVRD_POSS, and DIST_BRKOVRD PIDs for recent simultaneous brake pedal and accelerator pedal operation. ADVISE the customer that simultaneous brake pedal and accelerator pedal operation by the vehicle operator activates the brake over accelerator feature. REFER to POWERTRAIN CONTROL SOFTWARE for additional information. |
Chart 2
- Starting Concerns: Hard Start/Long Crank/Erratic Start/Erratic Crank
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Battery Condition and Current Draw | REFER to the appropriate service information article, Charging System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Secondary Ignition System | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Exhaust System | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| EVAP System | GO to PINPOINT TEST HX: EVAPORATIVE EMISSION (EVAP) SYSTEM AND MONITOR . |
| Intake Air System | GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
| Starting System | REFER to the appropriate service information article, Starting System to diagnose the engine cranks slowly symptom. |
| Mass Airflow (MAF) Sensor | GO to PINPOINT TEST DC: MASS AIRFLOW (MAF) SENSOR . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 3
- Starting Concerns: No Start (Engine Cranks)
Note. An extended crank because of a no start may load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Add On Anti-Theft Devices | Visual. CHECK with the customer. |
| Fuel And Ignition | GO to PINPOINT TEST A: NO START . |
| Exhaust System Restrictions | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 4
- Unique Idle Concerns: Slow Return To Idle
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Vacuum Leaks, Throttle Body | Visual. |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| Intake Air System Leaks | GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
Chart 5
- Unique Idle Concerns: Fast Idle
- Diesels/Runs On
Note. If the vehicle runs normally with the ignition in the OFF position, check for a damaged ignition switch, an IGN START/RUN or ISP-R circuit short to voltage, or a VPWR circuit short to voltage.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Base Engine | Check for air leaks, including correct sealing of intake manifold and components or vacuum lines attached to intake air (such as the PCV or EGR valve or vacuum lines). REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Cooling System | Verify the engine operates at normal temperature. REFER to the appropriate service information article, Engine Cooling or No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index , to diagnose any cooling system concerns that are present. |
| Intake Air System Leaks | GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 6
- Unique Idle Concerns: Low/Slow Idle
- Stalls/Quits: Deceleration
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Automatic Transmission (stalls or quits on deceleration) | REFER to the appropriate service information article, Automatic Transmission to diagnose the torque convertor operation concerns. |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Intake Air System | GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
| Charging System | REFER to the appropriate service information article, Charging System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Universal Heated Oxygen Sensor (HO2S) | GO to PINPOINT TEST Z: INTERMITTENT . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 7
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Secondary Ignition | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Exhaust System | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 8
Note. Verify the symptom is reported under normal driving conditions without excessive engine or vehicle load. Also, be aware of the engine RPM/speed limiting functions of the PCM.
Note. For vehicles equipped with a knock sensor (KS), a lack of power may result when the vehicle is operated with a breakout box installed at the PCM. The KS circuits are not shielded in a breakout box, and KS signal noise may be noticed by the PCM. If this happens, spark timing is retarded and a lack of power may result.
Note. For applications with a KS, a lack of power may result if the engine has developed an abnormal noise. The KS may interpret some abnormal noise as detonation and retard spark timing.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Automatic Transmission Fluid | Visual. |
| Air Cleaner Element | Visual. |
| Check the following PIDS: LONGFT1 or LONGFT2 (value between -20 and +20%) IMTV_F (if equipped): For both ignition ON, engine OFF and ignition ON, engine running with the transmission in PARK/NEUTRAL and the engine RPM greater than 3,000 RPM, the PID should indicate NO FAULT in both situations. | LONGFT1 or LONGFT2 value low (-): Continue diagnosis. Concentrate checks in areas that would cause the engine to run rich. LONGFT1 or LONGFT2 value high (+): Continue diagnosis. Concentrate checks in areas that would cause the engine to run lean. IMTV_F PID indicates a fault: GO to PINPOINT TEST HU: INTAKE AIR SYSTEMS . |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Secondary Ignition | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Mass Airflow (MAF) Sensor | GO to PINPOINT TEST DC: MASS AIRFLOW (MAF) SENSOR . |
| Exhaust System | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Variable Camshaft Timing (VCT) System | GO to PINPOINT TEST HK: VARIABLE CAMSHAFT TIMING (VCT) . |
| Accelerator Pedal Position (APP) Sensor | GO to PINPOINT TEST DK: ACCELERATOR PEDAL POSITION (APP) SENSOR . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Automatic Transmission | REFER to the appropriate service information article, Automatic Transmission, Shift Point Road Test to continue diagnosis. |
| Brake System Drag or Binding | REFER to the appropriate service information article, Brake System. |
| Supercharger Bypass System | GO to PINPOINT TEST KJ: SUPERCHARGER BYPASS CONTROL . |
| Turbocharger System | GO to PINPOINT TEST HN: TURBOCHARGER SYSTEM . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
| Additional Checks: Some vehicles have a TQ_CNTRL PID available. Check this PID to determine if the PCM is reducing torque. The TQ_CNTRL PID may indicate which component or system, if any, is requesting a torque reduction. Customer driving habits Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) to carry out the Making Changes to the VID Block procedure. Clutch (M/T) Charging system Engine RPM or speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS, VSS or OSS) | Visual. REFER to the applicable service information article. |
| Brake Over Accelerator | CHECK for simultaneous brake pedal and accelerator pedal operation inadvertently activating the brake over accelerator feature. CHECK the BRKOVR_ACTION, BRKOVRD_POSS, and DIST_BRKOVRD PIDs for recent simultaneous brake pedal and accelerator pedal operation. ADVISE the customer that simultaneous brake pedal and accelerator pedal operation by the vehicle operator activates the brake over accelerator feature. REFER to POWERTRAIN CONTROL SOFTWARE for additional information. |
Chart 9
Note. Carbon build up in the combustion chamber and on the back of valves can be a contributing factor for engine spark knock concerns. Remove carbon deposits prior to any component replacements.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Cooling System | Verify the engine operates at normal temperature. REFER to the appropriate service information article, Engine Cooling, The Engine Overheats or No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index to diagnose any cooling system concerns that are present. Verify correct coolant level and coolant concentration. REFER to the appropriate service information article, Engine Cooling, Cooling System Draining, Filling and Bleeding for correct coolant concentrations and fill procedures. |
| Mass Airflow (MAF) Sensor | GO to PINPOINT TEST DC: MASS AIRFLOW (MAF) SENSOR . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Secondary Ignition System | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| Engine Oil Quality | Visual. |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 10
Note. Driving styles may have a significant influence on fuel economy. Verify the concern before starting an in-depth diagnosis. If available, use the integrated diagnostic system (IDS) fuel economy test to verify a concern is present. The following external factors may contribute to poor fuel economy
- stop and go driving
- incorrect tire pressure and size
- vehicle loads (such as trailer towing)
- extended winter warm-up conditions
- high speed driving
- incorrect axle ratio
- road or weather conditions
- aftermarket add ons
- short run operations
- customer expectations
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Check the following PIDs: LONGFT1 or LONGFT2 (value between -20 and +20%) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volt of battery voltage) | LONGFT1 or LONGFT2 value low (-): Continue diagnosis. Concentrate checks in areas that would cause the engine to run rich. LONGFT1 or LONGFT2 value high (+): Continue diagnosis. Concentrate checks in areas that would cause the engine to run lean. VPWR not between 10.5 and 17.0 volts: REFER to the appropriate service information article, Charging System and CARRY OUT the Inspection and Verification to continue diagnosis. VPWR between 10.5 and 17.0 volts, but not within 0.5 volt of battery voltage: CHECK the B+ voltage to the PCM power relay. CHECK the VPWR circuit between the PCM and the PCM power relay. CHECK the PWR GND circuits. |
| Cooling System | Verify the engine operates at normal temperature. REFER to the appropriate service information article, Engine Cooling, Symptom Chart to diagnose any cooling system concerns that are present. |
| Transmission Fluid Level | Visual. |
| Secondary Ignition System | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Exhaust System | GO to PINPOINT TEST HF: CATALYST EFFICIENCY MONITOR AND EXHAUST SYSTEMS . |
| Variable Camshaft Timing (VCT) System | GO to PINPOINT TEST HK: VARIABLE CAMSHAFT TIMING (VCT) . |
| Automatic Transmission | REFER to the appropriate service information article, Automatic Transmission, Diagnosis By Symptom to continue diagnosis. |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| Grille Shutter | REFER to the appropriate service information article, Front End Body Panels, to continue diagnosis. |
| Additional Checks | Check for base engine or intake air system concerns. Check for a contaminated MAF sensor. REFER to the applicable service information article. Check for correct PCM VID block information. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) to CARRY OUT the Making Changes to the VID Block procedure. |
| Auto Stop Start System | GO to PINPOINT TEST AA: AUTO STOP START . |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 11
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Emissions Related Systems | GO to PINPOINT TEST EM: EMISSION COMPLIANCE . |
Chart 12
- Warning Indicators: Check Fuel Cap, Malfunction Indicator Lamp (MIL), Power Take Off (PTO), Temperature Warning Indicator or Gauge (applications with cylinder head temperature [CHT] sensor only), Transmission Control Indicator Lamp (TCIL), Powertrain Malfunction Indicator (Wrench)
- PTO Concerns: 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 (Section 5 Pinpoint Test unless noted) |
| Check Fuel Cap | Verify the fuel filler cap is correctly tightened or the capless fuel tank filler pipe is correctly sealed. REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, to diagnose the check fuel message. |
| MIL Always on when the engine is running (no DTCs present) Never on (including during indicator prove out) | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, and CARRY OUT the Inspection and Verification to continue diagnosis. |
| PTO | GO to PINPOINT TEST FB: POWER TAKE OFF (PTO) . |
| Temperature Warning Indicator or Gauge (applications with CHT sensor only) | For an engine that is overheating, REFER to the appropriate service information article, Engine Cooling to diagnose the engine overheating symptom. Be aware that since a PCM DTC is not present, the PCM is not attempting to activate the indicator. For an engine operating at normal temperature, GO to PINPOINT TEST DL: CYLINDER HEAD TEMPERATURE (CHT) SENSOR . |
| TCIL Always on when the engine is running (no DTCs present) Never on | REFER to the appropriate service information article, Automatic Transmission, External Controls. |
| Powertrain Malfunction Indicator (Wrench) | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, to diagnose the wrench indicator is never/always on or to diagnose the POWERTRAIN MALFUNCTION warning is inoperative. |
| Additional Testing | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 13
- Automatic Transmission (A/T) Shift Concerns: Upshift, Downshift, Engagement
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Transmission | REFER to the appropriate service information article, Automatic Transmission, Diagnosis and Testing to continue diagnosis. |
| Additional Tests | GO to PINPOINT TEST Z: INTERMITTENT . |
Chart 14
- Instrumentation: Tachometer Inoperative, Speedometer/Odometer Inoperative, Boost Gauge Indicates Higher Than Normal Boost, Fuel Gauge Inoperative
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Tachometer Inoperative | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, to diagnose the incorrect tachometer indication. |
| Speedometer/Odometer Inoperative | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, to diagnose the inoperative speedometer/odometer. |
| Boost Gauge | For supercharger bypass control concerns, GO to PINPOINT TEST KJ: SUPERCHARGER BYPASS CONTROL . For charge air cooler (CAC) system concerns, GO to PINPOINT TEST KP: CHARGE AIR COOLER (CAC) . |
| Fuel Gauge Inoperative | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes, to diagnose the incorrect fuel gauge indication. |
| Instrumentation | REFER to the appropriate service information article, Instrumentation, Message Center, and Warning Chimes. |
Chart 15
- Oil System Concerns: High Oil Consumption, Leaks
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM . |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Additional Checks | Check for external oil leaks and correct oil viscosity. Check the turbocharger system for oil leaks. |
Chart 16
- Cooling System Concerns: Electric Cooling Fan Does Not Operate (Low, High or Variable Speed), Cooling Fan Clutch Does Not Operate
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Electric Cooling Fan | For Edge, Escape, Fiesta 1.6L GTDI, Focus, MKX, and Transit Connect, GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN MOTOR . For all others, GO to PINPOINT TEST KF: FAN CONTROL RELAYS . |
| Cooling Fan Clutch | GO to PINPOINT TEST HV: ELECTRIC COOLING FAN CLUTCH . |
| Cooling System | REFER to the appropriate service information article, Engine Cooling to diagnose the cooling system concern. |
Chart 17
- Cooling System Concerns: Electric Cooling Fan Always Runs
Note. This chart is only intended to diagnose an electric cooling fan that always runs with a cool engine and the A/C and defroster off.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Cooling Fan | For Edge, Escape, Fiesta 1.6L GTDI, Focus, MKX, and Transit Connect, GO to PINPOINT TEST KN: VARIABLE SPEED ELECTRIC COOLING FAN MOTOR . For all others, GO to PINPOINT TEST KF: FAN CONTROL RELAYS . |
| Cooling System | REFER to the appropriate service information article, Engine Cooling, The Engine Overheats to diagnose the cooling system concern. |
Chart 18
- Exhaust System Concerns: Visible Smoke
Note. Black smoke indicates a rich fuel mixture, blue smoke indicates burning oil, and white smoke indicates water in the combustion chamber.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Base Engine | REFER to the appropriate service information article, Engine System and CARRY OUT the Inspection and Verification to continue diagnosis. |
| Fuel Delivery System Black smoke | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Ignition System Black smoke | For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, GO to PINPOINT TEST JB: SECONDARY IGNITION (COP) . |
| Positive Crankcase Ventilation (PCV) System Blue smoke | REFER to the appropriate service information article, Engine System for a description of the Oil Consumption Test. |
| Turbocharger System Blue smoke | REFER to the appropriate service information article, Fuel Charging and Controls - Turbocharger for the Oil Consumption Test. |
Chart 19
- Fuel System Concerns: Odor, Engine Compartment
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| EVAP System | Visual. |
| Fuel Delivery System | Visual. GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
Chart 20
- Engine Noise (under hood)
Note. Attempt to identify the source of the noise. If the noise is from a source other than those listed below, refer to NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX (for noise such as spark knock) or the applicable service information to continue diagnosis.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Secondary Ignition System | CHECK for a snap noise that may be due to secondary ignition arcing. For Fiesta 1.6L TIVCT, GO to PINPOINT TEST JC: SECONDARY IGNITION (COIL PACK) . For all others, CHECK the condition of the spark plug boots. |
| Turbocharger System | REFER to the appropriate Fuel Charging and Controls - Turbocharger article to diagnose the turbocharger noise. |
Chart 21
- Exhaust System Concerns: Odor (Sulfur or Rotten Egg Smell)
Note. A slight sulfur smell may be normal. Catalysts with less than 8,000-16,000 kilometers (5,000-10,000 miles), either from a new vehicle or new catalyst, are likely to have a sulfur smell due to the highly active state of new catalysts. Installing a new catalyst may actually make the symptom worse.
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Fuel Delivery System | GO to PINPOINT TEST HC: FUEL DELIVERY SYSTEM . |
| Fuel Source | TALK with the customer. Sulfur content can vary in different fuels. SUGGEST trying a different fuel source. |
Chart 22
- Starting Concerns: No Crank
| SYSTEM/COMPONENT | REFERENCE (Section 5 Pinpoint Test unless noted) |
| Add-on Anti-Theft Devices | Visual. CHECK with the customer. |
| Anti-Theft | REFER to the appropriate Anti-Theft article to diagnose the vehicle does not start symptom. |
| Base Engine Starting system | REFER to the appropriate Starting System article to diagnose the engine does not crank symptom. |