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

AUTOMATIC TRANSMISSION

When trouble code about automatic transmission is shown on display, carry out the following basic check. After that, carry out the replacement or repair work.

1. ATF level check. Refer to «AUTOMATIC TRANSMISSION FLUID»(ref-208395-S35776238372005120700000) .
2. Differential gear oil level check. Refer to «DIFFERENTIAL GEAR OIL»(ref-208395-S12578962472005120700000) .
3. ATF leak check. Refer to «AUTOMATIC TRANSMISSION FLUID»(ref-208395-S35776238372005120700000) .
4. Differential gear oil leak check. Refer to «DIFFERENTIAL GEAR OIL»(ref-208395-S12578962472005120700000) .
5. Stall test. Refer to «STALL TEST»(ref-208395-S11949561822005120700000) .
6. Line pressure test. Refer to «LINE PRESSURE TEST»(ref-208395-S40911946302005120700000) .
7. Transfer clutch pressure test. Refer to «TRANSFER CLUTCH PRESSURE TEST»(ref-208395-S31220221542005120700000) .
8. Time lag test. Refer to «TIME LAG TEST»(ref-208395-S14924596762005120700000) .
9. Road test. Refer to «ROAD TEST»(ref-208395-S41651055592005120700000) .
10. Shift characteristics. Refer to «TRANSFER CLUTCH PRESSURE TEST»(ref-208395-S31220221542005120700000) .

CHECK LIST NO. 1

Check the following items when problem has occurred.

Note. Use copies of this page for interviewing customers.

Scheme 1989

CHECK LIST NO. 2

Check the following items about the vehicle's state when MIL turns on.

Note. Use copies of this page for interviewing customers.

Scheme 1990

Scheme 1991

Scheme 1992

Scheme 1993

1. Airbag system wiring harness is routed near the engine control module (ECM), main relay and fuel pump relay. CAUTION: All Airbag system wiring harness and connectors are colored yellow. Do not use electrical test equipment on these circuit. Be careful not to damage Airbag system wiring harness when servicing the engine control module (ECM), transmission control module (TCM), main relay and fuel pump relay.
2. Never connect the battery in reverse polarity. The ECM will be destroyed instantly. The fuel injector and other part will be damaged in just a few minutes more.
3. Do not disconnect the battery terminals while the engine is running. A large counter electromotive force will be generated in the alternator, and this voltage may damage electronic parts such as ECM, etc.
4. Before disconnecting the connectors of each sensor and the ECM, be sure to turn OFF the ignition switch.
5. Poor contact has been identified as a primary cause of this problem. To measure the voltage and/or resistance of individual sensors or all electrical control modules at the harness side connector, use a tapered pin with a diameter of less than 0.64 mm (0.025 in). Do not insert the pin more than 5 mm (0.20 in) into the part.
6. Before removing ECM from the located position, disconnect two cables on battery. Otherwise, the ECM may be damaged. CAUTION: When replacing ECM, be careful not to use the wrong spec. ECM to avoid any damage on fuel injection system.
7. The connectors to each sensor in the engine compartment and the harness connectors on the engine side and body side are all designed to be waterproof. However, it is still necessary to take care not to allow water to get into the connectors when washing the vehicle, or when servicing the vehicle on a rainy day.
8. Use ECM mounting stud bolts at the body head grounding point when measuring voltage and resistance inside the passenger compartment.
9. Use engine grounding terminal or engine proper as the grounding point to the body when measuring voltage and resistance in the engine compartment.
10. Use TCM mounting stud bolts at the body head grounding point when measuring voltage and resistance inside the passenger compartment.
11. Every MFI-related part is a precision part. Do not drop them.
12. Observe the following cautions when installing a radio in MFI equipped models. CAUTION: The antenna must be kept as far apart as possible from the control unit. (The ECM is located under the steering column, inside of the instrument panel lower trim panel.) The antenna feeder must be placed as far apart as possible from the ECM and MFI harness. Carefully adjust the antenna for correct matching. When mounting a large power type radio, pay special attention to the three items above mentioned. Incorrect installation of the radio may affect the operation of the ECM.
13. Before disconnecting the fuel hose, disconnect the fuel pump connector and crank the engine for more than five seconds to release pressure in the fuel system. If engine starts during this operation, run it until it stops.
14. Problems in the electronic-controlled automatic transmission may be caused by failure of the engine, the electronic control system, the transmission proper, or by a combination of these. These three causes must be distinguished clearly when performing diagnostics.
15. Diagnostics should be conducted by rotating with simple, easy operations and proceeding to complicated, difficult operations. The most important thing in diagnostics is to understand the customer's complaint, and distinguish between the three causes.
16. In AT vehicles, do not continue the stall for more than five seconds at a time (from closed throttle, fully open throttle to stall engine speed).
17. On ABS vehicle, when performing driving test in jacked-up or lifted-up position, sometimes the warning light may be lit, but this is not a malfunction of the system. The reason for this is the speed difference between the front and rear wheels. After diagnosis of engine control system, perform the ABS memory clearance procedure of self-diagnosis system.

BATTERY

1. Measure battery voltage and specific gravity of electrolyte. Standard voltage: 12 V Specific gravity: Above 1.260
2. Check the condition of the main and other fuses, and harnesses and connectors. Also check for proper grounding.

ENGINE GROUNDING

Make sure the engine grounding terminal is properly connected to the engine.

Scheme 1994

ENGINE AND EMISSION CONTROL SYSTEM

1. The Multipoint Fuel Injection (MFI) system is a system that supplies the optimum air-fuel mixture to the engine for all the various operating conditions through the use of the latest electronic technology. With this system fuel, which is pressurized at a constant pressure, is injected into the intake air passage of the cylinder head. The injection quantity of fuel is controlled by an intermittent injection system where the electro-magnetic injection valve (fuel injector) opens only for a short period of time, depending on the quantity of air required for one cycle of operation. In actual operation, the injection quantity is determined by the duration of an electric pulse applied to the fuel injector and this permission simple, yet highly precise metering of the fuel.
2. Further, all the operating conditions of the engine are converted into electric signals, and this results in additional features of the system, such as large improved adaptability, easier addition of compensating element, etc. The MFI system also has the following features: Reduced emission of harmful exhaust gases. Reduced in fuel consumption. Increased engine output. Superior acceleration and deceleration. Superior startability and warm-up performance in cold weather since compensation is made for coolant and intake air temperature.

AUTOMATIC TRANSMISSION AND ELECTRONIC-HYDRAULIC CONTROL SYSTEM

The electronic-hydraulic control system consists of various sensors and switches, a transmission control module (TCM) and the hydraulic controller including solenoid valves. The system controls the transmission proper including shift control, lock-up control, overrunning clutch control, line pressure control and shift timing control. It also controls the AWD transfer clutch. In other words, the system detects various operating conditions from various input signals and sends output signals to shift solenoids 1, 2 and low clutch timing solenoid and 2-4 brake timing solenoid, line pressure duty solenoid, lock-up duty solenoid, transfer duty solenoid and 2-4 brake duty solenoid (a total of eight solenoids).

Scheme 1995

1. MODULE

Scheme 1996

1. SENSOR

Scheme 1997

Scheme 1998

Scheme 1999

Scheme 2000

1. SOLENOID VALVE, EMISSION CONTROL SYSTEM PARTS AND IGNITION SYSTEM PARTS

Scheme 2001

Scheme 2002

Scheme 2003

Scheme 2004

Scheme 2005

Scheme 2006

Scheme 2007

1. MODULE
2. SENSOR
3. SOLENOID VALVE AND SWITCH

Scheme 2008

Scheme 2009

Scheme 2010

Scheme 2011

Scheme 2012

MEASUREMENT

Measure input/output signal voltage.

Scheme 2013

Scheme 2014

Measuring condition

1. After warm-up the engine.
2. Gear position is in "N" or "P" position.
3. A/C is turned OFF.
4. All accessory switches are turned OFF.

Scheme 2015

Scheme 2016

Scheme 2017

NOTE

1. This connector is used both for OBD-II general scan tools and the Subaru Select Monitor.
2. Terminal No. 4 to No. 6 of the data link connector is used for the Subaru Select Monitor signal.

Scheme 2018

Scheme 2019

1. Prepare a general scan tool (OBD-II general scan tool) required by SAE J1978.
2. Open the cover and connect the OBD-II general scan tool to the data link connector (A) located in the lower portion of the instrument panel (on the driver's side).
3. Using the OBD-II general scan tool, call up diagnostic trouble code(s) and freeze frame data. OBD-II general scan tool functions consist of: MODE $01: Current powertrain diagnostic data MODE $02: Powertrain freeze frame data MODE $03: Emission-related powertrain diagnostic trouble codes MODE $04: Clear/Reset emission-related diagnostic information Read out data according to repair procedures. (For detailed operation procedures, refer to the OBD-II General Scan Tool Operation Manual .)

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

MODE $02 (POWERTRAIN FREEZE FRAME DATA)

Refers to data denoting the operating condition when trouble is sensed by the on-board diagnosis system. A list of the support data and PID (Parameter Identification) codes are shown in the following table.

Scheme 2020

Note. Refer to OBD-II general scan tool manufacturer's instruction manual to access freeze frame data (MODE $02).

READ CURRENT DATA FOR ENGINE (NORMAL MODE)

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {Current Data Display & Save} and press the [YES] key.
5. On the << Data Display Menu >> display screen, select the {Data Display} and press the [YES] key.
6. Using the scroll key, move the display screen up or down until the desired data is shown.

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

Scheme 2021

Scheme 2022

Note. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL . For select monitor display details, refer to the following.

Engine Load

1. Display: 0 - 100%

The engine load is displayed. The ECM calculates the engine load via the engine speed and signals from the pressure sensor. The engine load increases when the engine speed and absolute pressure of the intake manifold increase.

Coolant Temp.

1. Display: -40 to 215°C (-40 to 419°F)

The coolant temperature transmitted from the engine coolant temperature sensor is displayed.

A/F Correction #1, #2 and #3

1. Display: - 100 to 99%

Using the signal from the front oxygen (A/F) sensor, the correction value of the fuel supply amount regulated by the ECM is indicated. When the A/F is lean and when displayed value becomes 0 % or more, ECM increases the fuel. When the A/F is rich and when displayed value becomes 0 % or less, ECM decreases the fuel.

A/F Learning #1, #2 and #3

1. Display: - 100 to 99.2%

The ECM calculates the long-term fuel trim value from the short-term fuel trim value. The long-term fuel trim value means the correction value of long-term fuel supply amount. If the displayed value is less than 0 %, the fuel system is in rich status and the ECM restricts the fuel supply (by shortening the injector pulse). If the displayed value is more than 0 %, the fuel system is in lean status and the ECM increases the fuel supply (by extending the injector pulse).

Mani Absolute Pressure

1. Display: 0 - 254.9 kPa (0 - 1,912.5 mmHg, 0 - 75.3 inHg)

The pressure in the intake manifold is displayed. The ECM detects the pressure in the intake tube via the signal from the pressure sensor. The ECM calculates the air mass required for the engine.

Engine Speed

1. Display: 0 - 16,383 rpm

The engine speed transmitted from the crankshaft position sensor is detected.

Vehicle Speed

1. Display: 0 - 255 km/h (0 - 158 MPH)

The vehicle speed transmitted from the vehicle speed sensor is displayed.

Ignition Timing

1. Display: -64 to 63.5 deg.

The advanced ignition timing value is displayed. The ECM calculates the advanced ignition timing value using engine coolant temperature, engine speed, and engine load.

Intake Air Temp.

1. Display: 40 - 215°C (104 - 419°F)

The intake air temperature is displayed. The ECM detects the intake air temperature via the signal from the intake air temperature sensor, and corrects the ignition timing and fuel supply amount.

Rear O2 Sensor

1. Display: 0 - 327.7 Volt

The ECM corrects air-fuel ratio by the signal sent from O2 sensor. Also, the signal is used for catalyst degradation diagnosis.

Battery Voltage

1. Display: 0 - 20.4 V

The battery voltage is displayed.

Throttle Sensor Voltage

1. Display: 0 - 5 V

The throttle angle is displayed in voltage. When the throttle is fully-closed, the displayed voltage value is approx. 0.5 V. When it is fully-open, the voltage is approx. 4 V or more.

Fuel Injection #1 and #2 Pulse

1. Display: 0 - 65.3 msec (0 - 214.2 ft/sec)

The injector valve opening time is displayed. The longer the injector valve opening time, the more the fuel is supplied. The higher the engine load, the longer the injector valve opening time becomes.

Knocking Correction

1. Display: -64 to 63.5 deg.

The ECM controls the ignition timing via the signal from the knock sensor.

Atmosphere Pressure

1. Display: 0 - 254.9 kPa (0 - 1,912.5 mmHg, 0 - 75.3 inHg)

The atmospheric pressure is displayed. The ECM detects the atmospheric pressure via the signal from the atmosphere sensor.

Mani. Relative Pressure

1. Display: -128 - 128 kPa (-952 - 952 mmHg, -37.5 - 37.5 inHg)

A value calculated by subtracting the absolute pressure in the intake tube from the atmospheric pressure is displayed. A larger load leads to a larger value.

Fuel Tank Pressure

1. Display: -3.2 - 3.2 kPa (-24 - 24 mmHg, -0.94 - 0.94 inHg) The pressure in the fuel tank is displayed.

Fuel Temp.

1. Display: -40 to 215°C

The fuel temperature is displayed. The ECM detects the fuel temperature via the signal from the fuel temperature sensor. This signal is used for the evaporation diagnosis.

Front O2 Heater #1, #2 Current

1. Display: 0 - 25.5 A

The heater current of the A/F sensor is displayed. A larger current value leads to increased heat generation.

Fuel Level

1. Display: 0 - 5V

The float inside the fuel tank is a variable resistor which varies the resistance based on fuel level. The ECM then averages this voltage and the signal voltage from the fuel tank in order to determine fuel level. The scan tool displays close to 0.7 volts for an empty tank, and close to 5 volts for a full tank.

CPC Valve Duty Ratio

1. Display: 0 - 100%

The purge control solenoid valve is regulated by the ECM. The displayed value of 0 % indicates that the purge amount is 0, and 100 % indicates that the purge amount becomes the maximum.

A/F sensor #1, #2

1. Display: 0 - 2

The air surplus ratio output from the front oxygen (A/F) sensor is displayed. Air overflow ratio = 1.0 is regarded as a stoichiometric A/F ratio. A value above 1.0 indicates A/F lean range, and below 1.0 indicates A/F rich range.

A/F Correction #3

1. Display

The correction value of fuel supply amount regulated by the ECM via the signal from the rear oxygen sensor is displayed.

A/F Sensor #1, #2 Current

1. Display: -16 - 15.9 mA

A value of 0 mA is regarded as a stoichiometric A/F ratio. A negative value indicates A/F rich range, and positive value indicates A/F lean range.

A/F Sensor #1, #2 Resistance

1. Display: 0 - 255 ohms

The resistance value of the front oxygen (A/F) sensor is displayed. At idle after warm-up, the resistance value shows 27 to 32 ohm.

ISC Valve Duty Ratio

1. Display: 0 - 127.5%

The duty value of the idle air control solenoid valve is displayed. This value is regulated by the ECM. The displayed value of 0 % indicates that the air bypass circuit is closed, and 100 % indicates that it is fully-open.

No of EGR Steps

1. Display: 0 - 255 step

The number of the EGR valve steps is displayed. The EGR valve is driven by the stepping motor, and the number of steps is regulated by the ECM. A value of 0 steps indicates that the EGR ratio is 0%.

Rear O2 Heater Voltage

1. Display: 0 - 5.1 V

The heater voltage value of the rear oxygen sensor is displayed. The heater current duty-controlled by driving range regulates heater temperature.

A/F Heater Current 1, 2

1. Display: 0 - 25.5 A

The heater voltage value of the front oxygen (A/F) sensor is displayed. To stabilize the output, the heater current is regulated to keep heater temperature to the specified value.

AT Vehicle ID Signal

1. Display: ON or OFF

AT and MT vehicles are identified. For AT vehicles, ON is displayed, and for MT ones, OFF is displayed.

Neutral Position Switch

1. Display: ON or OFF

When the shift lever stays in the neutral position, ON is displayed. When in other positions, OFF is displayed.

Idle Switch Signal

1. Display: ON or OFF

When the accelerator pedal is released fully, ON displayed. When depressed fully, OFF is displayed.

P/S Switch

1. Display: ON or OFF

When the steering wheel is turned fully, ON is displayed. When returned, OFF is displayed. This signal is used for idle control or other controls.

A/C Switch

1. Display: ON or OFF

When the A/C switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Starter Switch

1. Display: ON or OFF

When the vehicle is cranking, ON is displayed. When not cranking, OFF is displayed.

Rear O2 Rich Signal

1. Display: ON or OFF

When the A/F ratio is rich, ON is displayed. When lean, OFF is displayed.

Knocking Signal

1. Display: ON or OFF

When knocking occurs and the ignition timing is tarded, ON is displayed. At any other time, OFF is displayed.

Crankshaft Position Sig.

1. Display: ON or OFF

When a crankshaft signal exists, ON is displayed. At any other time (at engine stall), OFF is displayed.

Camshaft Position Sig.

1. Display: ON or OFF

When a camshaft signal exists, ON is displayed. At any other time (at engine stall), OFF is displayed.

Rear Defogger SW

1. Display: ON or OFF

When the rear defogger switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Blower Fan SW

1. Display: ON or OFF

When the blower fan switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

Light Switch

1. Display: ON or OFF

When the light switch is turned ON, ON is displayed. When turned OFF, OFF is displayed. This signal is used for idle control or other controls.

A/C Lock Signal

1. Display: ON or OFF

Whether or not the A/C compressor is active is detected. When it is active, ON is displayed. When inactive, OFF is displayed.

A/C Mid Pressure Switch

1. Display: ON or OFF

The status of the A/C compressor is detected. When the A/C compressor voltage is high, ON is displayed. When low, OFF is displayed.

A/C Compressor Signal

1. Display: ON or OFF

When the A/C clutch is engaged, ON is displayed. When disengaged, OFF is displayed.

Radiator Fan Relay #1, #2, #3

1. Display: ON or OFF

When the radiator fan relay is ON (radiator operates), ON is displayed. When OFF (radiator stops), OFF is displayed.

Fuel Pump Relay

1. Display: ON or OFF

When the radiator fan relay is ON (fuel pump operates), ON is displayed. When OFF (fuel pump stops), OFF is displayed.

PCV Solenoid Valve

1. Display: ON or OFF

The status of the pressure control solenoid valve is displayed. When the pressure control solenoid valve is closed, OFF is displayed. When open, ON is displayed. During an evaporation leak diagnosis, the pressure control solenoid valve is only open when vacuum in the intake tube is taken into the fuel tank.

Vent Solenoid Valve

1. Display: ON or OFF

The status of the drain valve is displayed. When the drain valve is closed, ON is displayed. When open, OFF is displayed. Except during an evaporation leak diagnosis, the drain valve is always open.

Torque Control Signal #1, #2

1. Display: ON or OFF

When a torque down signal exists, ON is displayed. When it doesn't, OFF is displayed.

Torque Permission Signal

1. Display: ON or OFF

The signal which notifies whether or not torque down is possible is displayed. This signal is transmitted from the ECU in response to a torque down signal from the TCU. When torque down is prohibited, ON is displayed. When permitted, OFF is displayed.

Variable Intake Air Sol.

1. Display: ON or OFF

The status of the induction control valve is displayed. When the valve is closed for the control to improve low- and mid-speed range, ON is displayed. When open, OFF is displayed.

READ CURRENT DATA FOR ENGINE. (OBD MODE)

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {OBD System} and press the [YES] key.
5. On the << OBD Menu >> display screen, select the {Current Data Display & Save} and press the [YES] key.
6. On the << Data Display Menu >> display screen, select the {Data Display} and press the [YES] key.
7. Using the scroll key, move the display screen up or down until the desired data is shown.

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

Scheme 2023

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

READ FREEZE FRAME DATA FOR ENGINE. (OBD MODE)

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {OBD System} and press the [YES] key.
5. On the << OBD Menu >> display screen, select the {Freeze Frame Data} and press the [YES] key.

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

Scheme 2024

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

READ CURRENT DATA FOR AT.

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Transmission Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of transmission type.
4. On the << Transmission Diagnosis >> display screen, select the {Current Data Display & Save} and press the [YES] key.
5. On the << Data Display Menu >> display screen, select the {Data Display} and press the [YES] key.
6. Using the scroll key, move the display screen up or down until the desired data is shown.

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

Scheme 2025

Note. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For select monitor display details, refer to the following.

Front Wheel Speed

1. Display: 0 - 255 km/h (0 - 158 MPH)

The front wheel speed is displayed. This signal is used for the shift control, lock-up control, line pressure control, and transfer control.

ATF Temp.

1. Display: -40 to 215°C (-40 to 419°F)

The ATF temperature via the signal from the ATF temperature sensor is displayed.

Gear Position

1. Display

The present gear position is displayed. The gear position is calculated from the engine speed and torque converter turbine speed.

Line Pressure Duty Ratio

1. Display: 0 - 123%

The duty value of the line pressure duty solenoid is displayed. The line pressure duty solenoid is regulated by the TCM, adjusting the line pressure to the optimum value depending on driving conditions.

Lock Up Duty Ratio

1. Display: 0 - 123%

The duty value of the lock-up duty solenoid is displayed. The lock-up duty solenoid is regulated by the TCM. Because the lock-up duty solenoid controls the lock-up control valve, the lock-up clutch engages and disengages smoothly.

Transfer Duty Ratio

1. Display: 0 - 123%

The duty value of the transfer duty solenoid is displayed. The transfer duty solenoid is regulated by the TCM, adjusting the transfer clutch oil pressure and controlling the driving force of the rear wheels.

Turbine Revolution Speed

1. Display: 0 - 8,160 rpm

The input shaft speed detected by the torque converter speed sensor is displayed. This signal is used to control the line pressure and 2 - 4 brake pressure control timing during shifting.

Throttle Sensor Power

1. Display: 0 - 256 V

The supply voltage to the throttle sensor is displayed. This signal is used for the throttle sensor output correction.

Brake Clutch Duty Ratio

1. Display: 0 - 123%

The duty value of the 2 - 4 brake duty solenoid. The 2 - 4 brake duty solenoid is regulated by the TCM, adjusting the 2 - 4 brake pressure during shifting and relieving from harsh shifting.

Rear Wheel Speed

1. Display: 0 - 255 km/h (0 - 158 MPH)

The rear wheel speed is displayed. This signal is used to control the transfer. If the front vehicle speed sensor is malfunctioning, this signal is used as a substitute.

Cruise Control Signal

1. Display: ON or OFF

When the cruise control switch is ON, ON is displayed. When OFF, OFF is displayed.

ABS Signal

1. Display: ON or OFF

When the ABS function is active, ON is displayed. When inactive, OFF is displayed.

Stop Light Signal

1. Display: ON or OFF

When the brake pedal is depressed, ON is displayed. When released, OFF is displayed.

1st, 2nd, 3rd, D, R, Range Signal

1. Display: ON or OFF

When the switch for each range is ON, ON is displayed.

2-4 Brake Timing Sol.

1. Display: ON or OFF

When the 2-4 brake timing solenoid is ON, ON displayed. When OFF, OFF is displayed. The 2-4 brake timing solenoid is regulated by the TCM, controlling the release timing of the 2-4 brake.

Low Clutch Timing Sol.

1. Display: ON or OFF

When the low clutch timing solenoid is ON, ON is displayed. When OFF, OFF is displayed. The low clutch timing solenoid is regulated by the TCM, controlling the release timing of the low clutch.

Shift Solenoid #1, #2

1. Display: ON or OFF

When the solenoid valve is ON, ON is displayed. When OFF, OFF is displayed. By combining No. 1 and No. 2 solenoids, the shifting mechanism is controlled.

P Range

1. Display: ON or OFF

When the shift lever stays in P range, ON is displayed. When not in P range, OFF is displayed.

N Range

1. Display: ON or OFF

When the shift lever stays in N range, ON is displayed. When not in N range, OFF is displayed.

Torque Control Signal #1, #2

1. Display: ON or OFF

When the torque down signal exists, ON is displayed. When it does not exist, OFF is displayed.

Torque Permission Signal

1. Display: ON or OFF

The signal which notifies whether or not torque down is possible is displayed. This signal is transmitted from the ECU in response to a torque down signal from the TCU. When torque down is prohibited, ON is displayed. When permitted, OFF is displayed.

SUBARU SELECT MONITOR (NORMAL MODE)

1. On the << Main Menu >> display screen, select the {Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {Diagnostic Code(s) Display} and press the [YES] key.
5. On the << Diagnostic Code(s) Display >> display screen, select the {Current Diagnostic Code(s)} or {History Diagnostic Code(s)} and press the [YES] key.

Note. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For detailed concerning diagnostic trouble codes, refer to the List of Diagnostic Trouble Code (DTC) . Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .

SUBARU SELECT MONITOR (OBD MODE)

1. On the << Main Menu >> display screen, select the {2. Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {OBD System} and press the [YES] key.
5. On the << OBD Menu >> display screen, select the {Diagnosis Code(s) Display} and press the [YES] key.
6. Make sure that a diagnostic trouble code (DTC) is shown on the display screen.

Note. For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. For detailed concerning diagnostic trouble codes, refer to the List of Diagnostic Trouble Code (DTC). Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .

PREPARATION FOR THE DRIVE CYCLE.

1. Make sure that fuel remains approx. half amount [20 to 40 ell (5.3 - 10.6 US gal, 4.4 - 8.8 lmp gal)], and battery voltage is 12 V or more.
2. After performing diagnostics and cleaning the memory, check for any remaining unresolved trouble data. Refer to «CLEAR MEMORY MODE»(ref-208390-S19543680252005120700000) .
3. Separate test mode connector.

Note. Except for water temperature specified items at starting, diagnosis is carried out after engine warm up. Carry out diagnosis which is marked* on DTC twice, Then, after finishing 1st diagnosis, stop engine and do the second time at the same condition.

Scheme 2026

IDLE FOR 10 MINUTES

Note. Before diagnosis, drive vehicle at 4 km/h (6 MPH) or more.

Scheme 2027

Scheme 2028

Scheme 2029

1. On the << Main Menu >> display screen, select the {2. Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {Clear Memory} and press the [YES] key.
5. When the 'Done' and 'Turn Ignition Switch OFF' are shown on the display screen, turn the Subaru Select Monitor and ignition switch to OFF.

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

1. On the << Main Menu >> display screen, select the {2. Each System Check} and press the [YES] key.
2. On the << System Selection Menu >> display screen, select the {Engine Control System} and press the [YES] key.
3. Press the [YES] key after displayed the information of engine type.
4. On the << Engine Diagnosis >> display screen, select the {OBD System} and press the [YES] key.
5. On the << OBD Menu >> display screen, select the {4. Diagnosis Code(s) Cleared} and press the [YES] key.
6. When the `Clear Diagnostic Code?' is shown on the display screen, press the [YES] key.
7. Turn Subaru Select Monitor and ignition switch to OFF.

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

CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT COME ON

1. DIAGNOSIS: The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
2. TROUBLE SYMPTOM: When ignition switch is turned ON (engine OFF), MIL does not come on.
3. WIRING DIAGRAM

Scheme 2030

Scheme 2031

Scheme 2032

CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT GO OFF

1. DIAGNOSIS: The CHECK ENGINE malfunction indicator lamp (MIL) circuit is shorted.
2. TROUBLE SYMPTOM: Although MIL comes on when engine runs, trouble code is not shown on Subaru select monitor or OBD-II general scan tool display.
3. WIRING DIAGRAM

Scheme 2033

Scheme 2034

CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT BLINK AT A CYCLE OF 3 HZ

1. DIAGNOSIS: The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted. Test mode connector circuit is open.
2. TROUBLE SYMPTOM: When inspection mode, MIL does not blink at a cycle of 3 Hz.
3. WIRING DIAGRAM

Scheme 2035

Scheme 2036

CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) REMAINS BLINKING AT A CYCLE OF 3 HZ

1. DIAGNOSIS: Test mode connector circuit is shorted.
2. TROUBLE SYMPTOM: MIL blinks at a cycle of 3 Hz when ignition switch is turned to ON.
3. WIRING DIAGRAM

Scheme 2037

Scheme 2038

Scheme 2039

STARTER MOTOR CIRCUIT

1. WIRING DIAGRAM

Scheme 2040

Scheme 2041

Scheme 2042

CONTROL MODULE POWER SUPPLY AND GROUND LINE

1. WIRING DIAGRAM

Scheme 2043

Scheme 2044

Scheme 2045

IGNITION CONTROL SYSTEM

1. WIRING DIAGRAM

Scheme 2046

Scheme 2047

Scheme 2048

FUEL PUMP CIRCUIT

1. WIRING DIAGRAM

Scheme 2049

Scheme 2050

FUEL INJECTOR CIRCUIT

1. WIRING DIAGRAM

Scheme 2051

Scheme 2052

Scheme 2053

LIST

List of Diagnostic Trouble Code (DTC)

Note. Check general diagnostics table with non-conformity symptom for automatic transmission. Refer to BASIC DIAGNOSTIC PROCEDURE .