Home/Mercury/Mariner/Mercury Mariner II (2007-2010)/Repair manual/Testing & Diagnostics/Engine Controls - Symptom Charts - (Hybrid): Other

Contents

Wiring diagrams Section: Testing & Diagnostics

Engine Controls - Pinpoint Tests (Except Diesel & Hybrid)

Engine Controls - Description and Operation (Except Diesel & Hybrid): Overview
Engine Controls - Description and Operation (Except Diesel & Hybrid): Adjustments
Engine Controls - Description and Operation (Except Diesel & Hybrid): Diagnosis
Engine Controls - Description and Operation (Except Diesel & Hybrid): Overhaul
Engine Controls - Description and Operation (Except Diesel & Hybrid): Component Locations
Engine Controls - Description and Operation (Except Diesel & Hybrid): Application

Engine Controls - Powertrain DTC Charts and Descriptions (Except Diesel & Hybrid)

Engine Controls - Pinpoint Tests - (Hybrid)

All sections

Engine Controls - Symptom Charts - (Hybrid): Other Mercury Mariner II

Testing & Diagnostics ~511 words

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 key 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 EVAP system.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test 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 GENERATOR AND REGULATOR . 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	Refer to PINPOINT TEST DC .
Secondary Ignition System	Refer to PINPOINT TEST JB .
Fuel Delivery System	Refer to PINPOINT TEST HC .
Exhaust System	Refer to PINPOINT TEST HF .
Positive Crankcase Ventilation (PCV) System	Refer to PINPOINT TEST HG .
Evaporative Emissions (EVAP) System	CHECK for EVAP system blockages (engine stalls) or leaks (other symptoms). REFER to the EVAPORATIVE EMISSIONS - HYBRID .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Intake Air System	Refer to PINPOINT TEST HU .
Additional Testing	Refer 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) A/C system (for surge with A/C on) Speed control system (for surge with speed control on)	REFER to the applicable part in the Workshop article.

Chart 2

Engine/Vehicle Starting Concerns: No Start/Vehicle Disabled

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Ignition switch inputs to the PCM, power and ground to the modules, the traction battery contractor status, and the vehicle mode.	Refer to PINPOINT TEST AA .

Chart 3

Engine/Vehicle Starting Concerns: No Start/Normal Crank

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Add-on Anti-Theft Devices	Visual. CHECK with the customer.
Fuel/Ignition	Refer to PINPOINT TEST A .
Exhaust System (restrictions)	Refer to PINPOINT TEST HF .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Additional Testing	Refer to PINPOINT TEST Z .

Chart 4

Engine Backfires

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Secondary Ignition	Refer to PINPOINT TEST JB .
Fuel Delivery System	Refer to PINPOINT TEST HC .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Exhaust System	Refer to PINPOINT TEST HF .
Additional Testing	Refer to PINPOINT TEST Z .

Chart 5

Lack/Loss of Power

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.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Air Cleaner Element	Visual
Check the following PIDs: LONGFT1 (value between -20 and +20)	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.
Fuel Delivery System	Refer to PINPOINT TEST HC .
Secondary Ignition System	Refer to PINPOINT TEST JB .
Mass Air Flow (MAF) Sensor	Refer to PINPOINT TEST DC .
Exhaust System	Refer to PINPOINT TEST HF .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Transaxle	REFER to the AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - HYBRID .
Motor Electronics Cooling System	REFER to the TRANSAXLE/TRANSMISSION COOLING - HYBRID .
Brake System (brake drag or binding)	REFER to the BRAKE SYSTEM - GENERAL INFORMATION .
Additional Testing	Refer to PINPOINT TEST Z .
Additional Checks: Customer driving habits Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Engine RPM/speed limiting functions of the PCM (look for an incorrect high vehicle speed signal from the ABS module).	Visual. REFER to the applicable part in the Workshop article.

Chart 6

Engine Spark Knock

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Verify the engine operates at the normal temperature.	Visual. REFER to the ENGINE COOLING - HYBRID , to diagnose any cooling system concerns that are present.
Verify correct coolant level and coolant concentration.	REFER to the ENGINE COOLING - HYBRID , for proper fill concentrations and fill procedures.
Mass Air Flow (MAF) Sensor	Refer to PINPOINT TEST DC .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Fuel Delivery System	Refer to PINPOINT TEST HC .
Secondary Ignition System	Refer to PINPOINT TEST JB .
PCV System	Refer to PINPOINT TEST HG .
Engine Oil Quality	Visual
Knock Sensor	Refer to PINPOINT TEST DG .
Additional Testing	Refer to PINPOINT TEST Z .

Chart 7

Poor Fuel Economy

Note. Since driving styles can have a significant influence on fuel economy, verify the concern before starting an in-depth diagnosis. Also, the following external factors may contribute to poor fuel economy conditions

stop/go driving
improper 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

improper axle ratio
road/weather conditions
aftermarket add-ons
short run operations
customer expectations

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Transaxle Fluid Level	Visual. REFER to the AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - HYBRID .
Check the following PIDs: 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 GENERATOR AND REGULATOR - General Information. VPWR between 10.5 and 17.0 volts, but not within 0.5 of battery voltage: CHECK the B+ supply to the power relay. CHECK the VPWR circuit between the PCM and the power relay. CHECK the PWR GND circuits.
Verify the engine operates at normal temperature.	Visual. REFER to the ENGINE COOLING - HYBRID , to diagnose any cooling system concerns that are present.
Secondary Ignition System	Refer to PINPOINT TEST JB .
Fuel System	Refer to PINPOINT TEST HC .
Exhaust System	Refer to PINPOINT TEST HF .
Automatic Transaxle	REFER to the AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - HYBRID .
PCV System	Refer to PINPOINT TEST HG .
Additional Checks: Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Brake drag Base engine concerns Incorrect PCV valve Contaminated MAF sensor Intake air system	REFER to the applicable part in the Workshop article.
Additional Testing	Refer to PINPOINT TEST Z .

Chart 8

Emissions Compliance

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Emissions Related Systems	Refer to PINPOINT TEST EM .

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.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Verify the fuel filler cap is properly tightened.	Visual
Instrument Cluster	REFER to the INSTRUMENT PANEL AND CONSOLE .
Additional Testing	Refer to PINPOINT TEST Z .

Chart 10

Oil System Concerns: High Oil Consumption, Leaks

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
PCV System	Refer to PINPOINT TEST HG .
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Additional Checks External leaks Proper dipstick Proper oil viscosity	Visual

Chart 11

Cooling System Concerns: Electric Engine Cooling Fan(s) Does Not Operate (Low, Medium or High Speed)

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Electric Cooling Fan Components	Refer to PINPOINT TEST KF .
Cooling System	REFER to the ENGINE COOLING - HYBRID .
Motor Electronics Cooling System	REFER to the TRANSAXLE/TRANSMISSION COOLING - HYBRID .

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.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Electric Cooling Fan Components/ACPSW	Refer to PINPOINT TEST KF .
Cooling System	REFER to the ENGINE COOLING - HYBRID .
Motor Electronics Cooling System	REFER to the TRANSAXLE/TRANSMISSION COOLING - HYBRID .

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.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Base Engine	REFER to the ENGINE SYSTEM - GENERAL INFORMATION .
Fuel Delivery System Black Smoke	Refer to PINPOINT TEST HC .
Ignition System Black Smoke	Refer to PINPOINT TEST JB .
PCV System Blue Smoke	Refer to PINPOINT TEST HG .

Chart 14

Fuel System Concerns: Fuel Odor, Engine Compartment

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
EVAP System	CHECK for EVAP system leaks. REFER to the EVAPORATIVE EMISSIONS - HYBRID .
Fuel System	Visual. REFER to the FUEL TANK AND LINES - HYBRID .

Chart 15

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 Workshop article part.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Secondary Ignition System Snap noise that may be due to secondary ignition arcing.	CHECK the condition of the coil-on-plug (COP) spark plug boots.

Chart 16

Climate Control: Lack of A/C Cooling, A/C Not Functioning, A/C Always On, A/C Compressor Runs Continuously

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
A/C System	If sent here from a Workshop article with a WACF PID indicating a fault (or YES), GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS and follow the direction for KOEO DTC P0645. For all others, REFER to the CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS - HYBRID .

Chart 17

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.

SYSTEM/COMPONENT	REFERENCE (Section 5 Pinpoint Test unless noted)
Check for any driveability or exhaust smoke symptoms	GO to No Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index for direction to repair other symptoms.
Fuel Delivery System	Refer to PINPOINT TEST HC .
EVAP System	CHECK for EVAP system leaks. REFER to the EVAPORATIVE EMISSIONS - HYBRID .
Fuel Source	Talk with the customer. Since sulfur content can vary in different fuels, suggest trying a different fuel source.