Engine (Diagnostics) (H6DO): Diagnosis Subaru Outback BP

INSPECTION

Before performing diagnostics, check the following items which might affect engine problems

MODE $01 (CURRENT POWERTRAIN DIAGNOSTIC DATA)

Refers to data denoting the current operating condition of analog input/output, digital input/output and/or the powertrain system.

A list of the support data and PID (Parameter Identification) codes are shown in the following table.

Scheme 1730

Note. Refer to OBD-II general scan tool manufacturer's instruction manual to access generic OBD-II PIDs (MODE $01).

MODE $03 (EMISSION-RELATED POWERTRAIN DIAGNOSTIC TROUBLE CODE)

Refer to Read Diagnostic Trouble Code for information about data denoting emission-related powertrain diagnostic trouble codes. Refer to READ DIAGNOSTIC TROUBLE CODE .

MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)

Refers to the mode used to clear or reset emission-related diagnostic information (OBD-II trouble diagnostic information).

Note. Refer to OBD-II general scan tool manufacturer's instruction manual to clear or reset emission-related diagnostic information (MODE $04).

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1. Prepare Subaru Select Monitor kit. Refer to «PREPARATION TOOL»(ref-208390-S12047937222005120700000) , General Description.
2. Connect diagnosis cable to Subaru Select Monitor.
3. Insert cartridge into Subaru Select Monitor. Refer to «PREPARATION TOOL»(ref-208390-S12047937222005120700000) , General Description.
4. Connect Subaru Select Monitor to data link connector. Data link connector located in the lower portion of the instrument panel (on the driver's side). Connect diagnosis cable to data link connector. CAUTION: Do not connect scan tools except for Subaru Select Monitor and OBD-II general scan tool.
5. Turn ignition switch to ON (engine OFF) and Subaru Select Monitor switch to ON.
6. Using Subaru Select Monitor, call up diagnostic trouble code(s) and various data, then record them.

READ DIAGNOSTIC TROUBLE CODE (DTC) FOR ENGINE (NORMAL MODE)

Refer to Read Diagnostic Trouble Code for information about how to indicate DTC. Refer to READ DIAGNOSTIC TROUBLE CODE .

READ DIAGNOSTIC TROUBLE CODE (DTC) FOR ENGINE (OBD MODE)

Refer to Read Diagnostic Trouble Code for information about how to indicate DTC . Refer to READ DIAGNOSTIC TROUBLE CODE .

OBD-II GENERAL SCAN TOOL

Refers to data denoting emission-related powertrain diagnostic trouble codes.

For details concerning diagnostic trouble codes, refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .

Note. Refer to OBD-II general scan tool manufacturer's instruction manual to access emission-related powertrain diagnostic trouble codes (MODE $03).

For clear memory procedures using the OBD-II general scan tool, refer to the OBD-II General Scan Tool Instruction Manual.

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1. Prepare Subaru Select Monitor kit. Refer to «PREPARATION TOOL»(ref-208390-S12047937222005120700000) , General Description.
2. Connect diagnosis cable to Subaru Select Monitor.
3. Insert cartridge into Subaru Select Monitor. Refer to «PREPARATION TOOL»(ref-208390-S12047937222005120700000) , General Description.
4. Connect test mode connector at the lower portion of instrument panel (on the driver's side).
5. Connect Subaru Select Monitor to data link connector. Data link connector is located in the lower portion of the instrument panel (on the driver's side). Connect diagnosis cable to data link connector. CAUTION: Do not connect scan tools except for Subaru Select Monitor and OBD-II general scan tool.
6. Turn ignition switch to ON (engine OFF) and Subaru Select Monitor switch to ON.
7. On the << Main Menu >> display screen, select the {2. Each System Check} and press the [YES] key.
8. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
9. Press the [YES] key after displayed the information of engine type.
10. On the << Engine Diagnosis >> display screen, select the {System Operation Check Mode} and press the [YES] key.
11. On the << System Operation Check Mode >> display screen, select the {Actuator ON/OFF Operation} and press the [YES] key.
12. Select the desired compulsory actuator on the << Actuator ON/OFF Operation >> display screen and press the [YES] key.
13. Pressing the [NO] key completes the compulsory operation check mode. The display will then return to the << Actuator ON/OFF Operation >> screen.

1. A list of the support data is shown in the following table.

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Note. The following parts will be displayed but not functional because they are not installed on the vehicle.

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1. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.

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1. When ignition switch is turned to ON (engine off), the CHECK ENGINE malfunction indicator lamp (MIL) in the combination meter illuminates. NOTE: If the MIL does not illuminate, perform diagnostics of the CHECK ENGINE light circuit or the combination meter circuit. Refer to «CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT COME ON.»(ref-208390-S20129120572005120700000) , Engine Malfunction Indicator Lamp (MIL).
2. After starting the engine, the MIL goes out. If it does not, either the engine or the emission control system is malfunctioning.
3. If the diagnosis system senses a misfire which could damage the catalyzer, the MIL will blink at a cycle of 1 Hz.
4. When ignition switch is turned to ON (engine off) or to "START" with the test mode connector connected, the MIL blinks at a cycle of 3 Hz.

Scheme 1746

DTC DETECTING CONDITION

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode. Refer to «CLEAR MEMORY MODE»(ref-208390-S19543680252005120700000) and Inspection Mode. Refer to «INSPECTION MODE»(ref-208390-S37988818422005120700000) .

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

TROUBLE SYMPTOM

1. Erroneous idling

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling
2. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Hard to start
2. Erroneous idling
3. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Hard to start
2. Erroneous idling
3. Poor driving performance

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling
2. Engine stalls.
3. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Engine stalls.
3. Poor driving performance

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Engine stalls.
3. Poor driving performance

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Engine does not return to idle.

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Thermostat remains open.

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Scheme 1800

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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DIAGNOSTIC PROCEDURE

Note. For diagnostic procedure, refer to . DTC P0137: O2 SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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Note. For the diagnostic procedure, refer to DTC P0171: SYSTEM TOO LEAN (BANK 1) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling
2. Engine stalls.
3. Poor driving performance

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Note. For the diagnostic procedure, refer to DTC P0174: SYSTEM TOO LEAN (BANK 2) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling
2. Engine stalls.
3. Poor driving performance

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Note. or the diagnostic procedure, refer to DTC P0306: CYLINDER 6 MISFIRE DETECTED , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0306: CYLINDER 6 MISFIRE DETECTED , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0306: CYLINDER 6 MISFIRE DETECTED , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0306: CYLINDER 6 MISFIRE DETECTED , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0306: CYLINDER 6 MISFIRE DETECTED , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault Detected simultaneously at fault occurrence (A misfire which could damage catalyst occurs.)

1. Engine stalls.
2. Erroneous idling
3. Rough driving

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Poor driving performance
2. Knocking occurs.

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Poor driving performance
2. Knocking occurs.

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Scheme 1840

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Poor driving performance
2. Knocking occurs.

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Poor driving performance
2. Knocking occurs.

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Engine stalls.
2. Failure of engine to start

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Scheme 1846

1. DTC DETECTING CONDITION: Tow consecutive driving cycles with fault

1. Engine stalls.
2. Failure of engine to start.

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Scheme 1848

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Engine stalls.
2. Failure of engine to start

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Scheme 1850

1. DTC DETECTING CONDITION: Tow consecutive driving cycles with fault

1. Engine stalls.
2. Failure of engine to start

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Poor driving performance on low engine speed
2. Erroneous idling
3. Poor driving performance.

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Engine stalls.
2. Idle mixture is out of specifications.

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Gasoline smell
2. There is a hole of more than 1.0 mm (0.04 in) dia. in evaporation system or fuel tank.

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Gasoline smell
2. There is a hole of more than 0.5 mm (0.020 in) dia. in evaporation system or fuel tank.

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Scheme 1876

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Gasoline smell
2. Fuel filler cap loose or missing

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Occurrence of noise
2. Overheating

Note. If the vehicle, with the engine idling, is placed very close to a wall or another vehicle, preventing normal cooling function, the OBD system may detect malfunction.

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Note. For the diagnostic procedure, refer to DTC P0503: VEHICLE SPEED SENSOR INTERMITTENT/ERRATIC/HIGH , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Engine is difficult to start.
2. Engine does not start.
3. Erroneous idling
4. Engine stalls.

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Scheme 1901

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Engine does not return to normal idle speed.

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Scheme 1903

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Engine stalls.
3. Engine breathing

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Scheme 1905

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Erroneous idling
2. Engine stalls.
3. Engine breathing

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Scheme 1907

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Failure of engine to start

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Scheme 1909

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Engine does not return to normal idle speed.

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Scheme 1913

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Engine does not start.
2. Engine stalls.

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Scheme 1915

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Radiator fan does not operate properly.
2. Overheating

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Radiator fan does not operate properly.
2. Overheating

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Scheme 1924

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Note. For the diagnostic procedure, refer to DTC P0734: GEAR 4 INCORRECT RATIO , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0734: GEAR 4 INCORRECT RATIO , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

Note. For the diagnostic procedure, refer to DTC P0734: GEAR 4 INCORRECT RATIO , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Shift point too high or too low; engine brake not effective in "3" range; excessive shift shock; excessive tight corner "braking"

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. No lock-up (after engine warm-up)
2. No shift or excessive tight corner "braking"

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Erroneous idling

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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DTC DETECTING CONDITION

1. Detected simultaneously at fault occurrence

Scheme 1943

1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

Scheme 1944

DTC ON DISPLAY TITLE

Note. For the diagnostic procedure, refer to DTC P1153: O2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK 1 SENSOR 1) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Note. For the diagnostic procedure, refer to DTC P1155: O2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK 2 SENSOR 1) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).

1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

1. Improper fuel supply

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Failure of engine to start

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1. DTC DETECTING CONDITION: Detected simultaneously at fault occurrence

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Excessive shift shock

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

1. Excessive shift shock

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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1. DTC DETECTING CONDITION: Two consecutive driving cycles with fault

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Note. Malfunction of parts other than those listed is also possible. Refer to ENGINE TROUBLE IN GENERAL .

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