QT1 CARRY OUT THE NETWORK TEST
| WARNING | TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE HYBRID SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH. |
- Carry out all the safety steps required to run the vehicle tests.
- Complete the preliminary checks looking for obvious concerns that may relate to the symptom. Check items such as those listed: fuses electrical circuits and connectors vacuum lines (leaks, routing) air intake system (leaks, restrictions) fuel quality (octane, contamination, winter/summer blend) engine cooling system (engine operating at correct temperature) motor electronics cooling system
- Access any related OASIS or TSB information.
- Carry out the network test.
Note. If the scan tool being used does not support the network test, an alternative method is to attempt communication with each module on the controller area network (CAN) link.
Does the network test pass?
QT2 CARRY OUT THE PCM AND TCM QUICK TEST
Note. If unable to access the diagnostic trouble codes (DTCs), GO to PINPOINT TEST QA . For additional information on retrieving malfunction indicator lamp (MIL) and non-MIL DTCs, refer to QUICK TEST .
Note. Do not carry out consecutive quick tests without turning the ignition to OFF position for a minimum of 15 seconds.
- Complete the PCM quick test to access any DTCs. Note any key on engine off (KOEO), key on engine running (KOER) (if engine runs) and continuous memory (MIL and non-MIL) DTCs.
- Complete the TCM quick test to access any DTCs. Note any KOEO and continuous memory DTCs.
Are any PCM or TCM DTCs present?
| Yes | No |
|---|
| If DTC P0106, P1A0C, P2195 or P2279 is retrieved and the engine runs rough or backfires, CHECK the positive crankcase ventilation (PCV) system for damage, leaks, cracks or a disconnected PCV valve or hose. REPAIR as necessary. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS for direction to REPAIR any DTCs after noting the following: REPAIR DTCs in the following order (for each mode, begin diagnosis with the first DTC output). Any PCM KOEO DTCs Any PCM KOER DTCs Any TCM KOEO DTCs Any PCM continuous memory DTCs (RETRIEVE any available freeze frame data and disregard any identical/related continuous DTCs or DTCs already repaired). Any TCM continuous memory DTCs (RETRIEVE any available freeze frame data and disregard any identical/related continuous DTCs or DTCs already repaired). | GO to NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX for direction to the correct symptom chart in No Diagnostic Trouble Codes (DTCs) Present Symptom Charts . NOTE: If the symptom is not listed, REFER to the applicable Workshop Manual or GO to PINPOINT TEST Z (for intermittent PCM or TCM system diagnostics). |
| NOTE |
|---|
| If the symptom is not listed, REFER to the applicable Workshop Manual or GO to PINPOINT TEST Z (for intermittent PCM or TCM system diagnostics). |
No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index
| System/Symptom | Oasis Number | Chart Number |
|---|
| Engine/Vehicle Starting Concerns | No start/Vehicle disabled | 601300 | Chart Number: 2 |
| No start/Normal crank | 603300 | Chart Number: 3 |
| Unique Idle Concerns | Rolling idle | 618400 | Chart Number: 1 |
SYMPTOM CHART - DRIVEABILITY
| System/Symptom | Oasis Number | Chart Number |
|---|
| Stalls/Quits | Idle, Acceleration, Cruise | 607x00 | Chart Number: 1 |
| Engine Runs Rough | 608x00 | Chart Number: 1 |
| Engine Misses | 609x00 | Chart Number: 1 |
| Buck/Jerk | 610x00 | Chart Number: 1 |
| Hesitation/Stumble | 611x00 | Chart Number: 1 |
| Surge | 612x00 | Chart Number: 1 |
| Engine Backfires | 613x00 | Chart Number: 4 |
| Lack/Loss of Power | 614x00 | Chart Number: 5 |
| Engine Spark Knock | 615x00 | Chart Number: 6 |
SYMPTOM CHART - DRIVEABILITY (PERFORMANCE WHILE DRIVING CONCERNS)
Note. OASIS identifiers (the x means any number (1-9) can be used) xxx4xx=during idle, xxx5xx=during acceleration, xxx6xx=during cruise, xxx7xx=during deceleration.
| System/Symptom | Oasis Number | Chart Number |
|---|
| Poor Fuel Economy | 622000 | Chart Number: 7 |
| Emissions Compliance | 623000 | Chart Number: 8 |
SYMPTOM CHART - ADDITIONAL DRIVEABILITY CONCERNS
| System/Symptom | Oasis Number | Chart Number |
|---|
| Warning Indicators | Malfunction indicator lamp (MIL) | 698298 | Chart Number: 9 |
| Hazard indicator lamp | 206000 | Chart Number: 9 |
| Powertrain malfunction indicator (wrench) lamp | 206000 | Chart Number: 9 |
| Temperature warning indicator lamp | 206000 | Chart Number: 9 |
| Check fuel cap indicator lamp | 206000 | Chart Number: 9 |
SYMPTOM CHART - ELECTRICAL
| System/Symptom | Oasis Number | Chart Number |
|---|
| Oil System Concerns | High oil consumption | 401000 | Chart Number: 10 |
| Leaks | 401000 | Chart Number: 10 |
| Cooling System Concerns | Electric engine cooling fan(s) does not operate (low, medium or high speed) | 402000 | Chart Number: 11 |
| Electric engine cooling fan(s) always runs | 402000 | Chart Number: 12 |
| Exhaust System Concerns | Visible smoke | 403000 | Chart Number: 13 |
| Odor (sulfur or rotten egg smell) | 403000 | Chart Number: 16 |
| Fuel System Concerns | Fuel odor, engine compartment | 404000 | Chart Number: 14 |
| Engine Noise (Under Hood) | 497000 | Chart Number: 15 |
Chart 1
- Engine Runs Rough
- Engine Misses
- Stalls/Quits: Idle, Acceleration, Cruise
- Buck/Jerk
- Hesitation/Stumble
- Surge
- Unique Idle Concerns: Rolling Idle
Note. The engine may stall if left running while refueling, or it may restart if the ignition is not cycled to ACC or OFF position before 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 ( ENGINE CONTROLS - PINPOINT TESTS -- ESCAPE HYBRID & MARINER HYBRID unless noted) |
|---|
| Check the following parameter identification (PID)s: LONGFT1 (value between - 20 and +20) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volt of battery voltage) | LONGFT1 value low (-): Continue diagnosis. Concentrate checks in areas that cause the engine to run rich. LONGFT1 value high (+): Continue diagnosis. Concentrate checks in areas that cause the engine to run lean. VPWR not between 10.5 and 17.0 volts: Refer to the CHARGING SYSTEM -- ESCAPE, ESCAPE HYBRID, MARINER & MARINER HYBRID . VPWR between 10.5 and 17.0 volts, but not within 0.5 volt of battery voltage: CHECK B(+) supply 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. |
| Mass Air Flow (MAF) Sensor | GO to PINPOINT TEST DC . |
| Secondary Ignition System | GO to PINPOINT TEST JB . |
| Fuel Delivery System | GO to PINPOINT TEST HC . |
| Exhaust System | GO to PINPOINT TEST HF . |
| Positive Crankcase Ventilation (PCV) System | GO to PINPOINT TEST HG . |
| Evaporative Emissions (EVAP) System | CHECK for EVAP system blockages (engine stalls) or leaks (other symptoms). GO to PINPOINT TEST HX . |
| Heated Oxygen Sensor (HO2S) | GO to PINPOINT TEST DZ . |
| Base Engine | REFER to the appropriate Engine article . |
| Intake Air System | GO to PINPOINT TEST HU . |
| Additional Testing | GO to PINPOINT TEST Z . |
| Additional Checks: Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Be aware of the engine RPM/speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS). Driveline and electronically controlled continuously variable transaxle (CVT) Cruise control system (for surge with cruise control on) | REFER to the appropriate service information |
| Brake Over Accelerator | For brake over accelerator feature activation, 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
- Engine/Vehicle Starting Concerns: No Start/Vehicle Disabled
Chart 3
- Engine/Vehicle Starting Concerns: No Start/Normal Crank
Chart 4
Chart 5
Note. Verify the symptom is reported under normal driving conditions without excessive engine/vehicle load. Also, be aware of the engine RPM/speed limiting functions of the PCM.
Chart 6
Chart 7
Note. Since driving styles can have a significant influence on fuel economy, verify the concern before starting an in-depth diagnosis.
Note. Excessive temperatures in the high voltage traction battery will cause the engine to run longer than normal to cool the high voltage traction battery and will result in reduced fuel economy. The high voltage traction battery cooling system should be checked for proper operation if there is no obvious cause for the additional cooling request. The following external factors may also contribute to poor fuel economy conditions
- stop/go driving
- incorrect tire pressure/size
- vehicle loads (such as trailer towing)
- extended winter warm-up conditions
- high speed driving
- regenerative braking disabled
- high voltage traction battery temperatures
- incorrect axle ratio
- road/weather conditions
- aftermarket add-ons
- short run operations
- customer expectations
Chart 8
Chart 9
- Warning Indicators: Malfunction Indicator Lamp (MIL), Hazard Indicator Lamp, Powertrain Malfunction Indicator (Wrench) Lamp, Temperature Warning Indicator Lamp, Check Fuel Cap Indicator Lamp
Note. If the symptom is both MIL ON and exhaust emission test failure, GO directly to CHART 8 . If the vehicle is disabled, GO directly to CHART 2 . If the engine is a no start, GO directly to CHART 3 . If the engine runs rough at idle, GO directly to CHART 1 .
Chart 10
- Oil System Concerns: High Oil Consumption, Leaks
Chart 11
- Cooling System Concerns: Electric Engine Cooling Fan(s) Does Not Operate (Low, Medium or High Speed)
Chart 12
- Cooling System Concerns: Electric Engine Cooling Fan(s) Always Runs
Note. This chart is intended to only diagnose an electric engine cooling fan that always runs with a cool engine and the A/C and defroster off.
Chart 13
- 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.
Chart 14
- Fuel System Concerns: Fuel Odor, Engine Compartment
Chart 15
- Engine Noise (Under Hood)
Chart 16
- 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) (new vehicle or 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.
