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Engine Controls - Engine (Diagnostics) (H4SO - 2.5L SOHC): Diagnosis Subaru Outback BR

Testing & Diagnostics 25 illustrations ~3843 words

INSPECTION

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

MODE $01: (CURRENT POWERTRAIN DIAGNOSTIC DATA)

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

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

PIDDataUnit of measure
$01Number of emission-related powertrain DTC, and malfunction indicator light status and diagnosis support information
$03Fuel system control status
$04Calculated engine load value%
$05Engine coolant temperature°C
$06Short term fuel trim%
$07Long term fuel trim%
$0BIntake manifold absolute pressureKPa
$0CEngine speedRPM
$0DVehicle speedMPH
$0EIgnition timing advance°
$0FIntake air temperature°C
$10Intake air amountG/s
$11Throttle valve opening angle%
$13Air fuel ratio sensor
$15Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (Bank 1 Sensor 2)V and %
$1CSupporting OBD system
$1FElapsed time after starting the engineSec
$21Driving distance after the malfunction indicator light illuminatesMiles
$24A/F value and A/F sensor output voltage (Bank 1 Sensor 1)And V
$2CTarget EGR%
$2DEGR deviation%
$2EEvaporative purge%
$2FFuel level%
$30Number of warm ups after DTC clear
$31Driving distance after DTC clearMiles
$32Fuel tank pressurePa
$33Atmospheric pressureKPa
$34A/F value and A/F sensor current (Bank 1 Sensor 1)And mA
$3CCatalytic temperature #1°C
$41Diagnosis monitoring per drive cycle
$42ECM power voltageV
$43Absolute load%
$44A/F target lambda
$45Relative throttle opening angle%
$46Ambient temperature°C
$47Absolute throttle opening angle 2%
$49Absolute acceleration opening angle 1%
$4AAbsolute acceleration opening angle 2%
$4CTarget throttle opening angle%
$4DEngine operating time while malfunction indicator light is illuminatingMin
$4EElapsed time after DTC clearMin
$51Fuel used
$5ARelative acceleration opening angle%
$65Neutral status

PID DATA REFERENCE CHART

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

MODE $03 (EMISSION-RELATED POWERTRAIN DTC)

Refer to "List of Diagnostic Trouble Code (DTC)" for information about data denoting emission-related powertrain DTC. Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .

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

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

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

GENERAL SCAN TOOL

Refer to data denoting emission-related powertrain DTC.

For details concerning DTC, refer to "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .

Note. Refer to general scan tool manufacturer's instruction manual to access powertrain DTC (MODE $03).

  1. After performing the diagnostics and clearing the memory, check that no DTC remains. Ref. to «MODE $04 (CLEAR/RESET EMISSION-RELATED DIAGNOSTIC INFORMATION)»(ref-371914-S18926690342010091900000) , OPERATION, General Scan Tool.
  2. Warm up the engine.
  3. Install the delivery (test) mode fuse (A) of the main fuse box.
  4. Connect the general scan tool to the data link connector located in the lower portion of the instrument panel (on the driver's side). CAUTION: Do not connect any scan tools except Subaru Select Monitor or general scan tool.
  5. Start the engine. NOTE: Make sure the select lever is placed in "P" position before starting. (CVT model) Depress the clutch pedal when starting engine. (MT model)
  6. Turn the neutral position switch to ON operating select lever or shift lever.
  7. Depress the brake pedal to turn the brake switch ON. (CVT model)
  8. Keep the engine speed in 2,500 - 3,000 RPM range for 40 seconds.
  9. Place the select lever or shift lever in "D" position (CVT model) or "1st gear" (MT model) and drive the vehicle at 5 to 10 km/h (3 to 6 MPH). NOTE: For AWD model, release the parking brake. The speed difference between front and rear wheels may illuminate the ABS warning light, but this does not indicate a malfunction. When engine control system diagnosis is finished, perform the VDC memory clearance procedure of self-diagnosis system. Ref. to «CLEAR MEMORY MODE»(ref-371926-S09999057382010091900000) .
  10. Using the general scan tool, check for DTC and record the result(s). NOTE: For detailed operation procedures, refer to the general scan tool operation manual. For details concerning DTC, refer to "List of Diagnostic Trouble Code (DTC)". Ref. to «LIST OF DIAGNOSTIC TROUBLE CODE (DTC)»(ref-371914-S32414380772010091900000) .

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

Note. Initial diagnosis of electronic throttle control is performed after memory clearance. For this reason, start the engine after 10 seconds or more have elapsed since the ignition switch was turned to ON.

DIAGNOSIS

The malfunction indicator light circuit is open or shorted.

TROUBLE SYMPTOM

When the ignition switch is turned to ON (engine OFF), malfunction indicator light does not illuminate.

Scheme 1

Scheme 1: WIRING DIAGRAM
Scheme 1: WIRING DIAGRAM
StepCheckYesNo
1 CHECK OUTPUT SIGNAL OF ECM. Turn the ignition switch to ON. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B135) No. 33 (+) - Chassis ground (-)Is the voltage 10 V or more?Go to step 5 .Go to step 2 .
2 CHECK HARNESS BETWEEN ECM AND COMBINATION METER CONNECTOR. Turn the ignition switch to OFF. Remove the combination meter. Ref. to COMBINATION METER . Disconnect the connector from ECM and combination meter. Measure the resistance of harness between ECM and combination meter connector. Connector & terminal (B135) No. 33 - (i10) No. 6Is the resistance less than 1 ohms?Go to step 3 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and combination meter connector Poor contact of coupling connector
3 CHECK FOR POOR CONTACT. Check for poor contact of combination meter connector.Is there poor contact of combination meter connector?Repair the poor contact of combination meter connector.Go to step 4 .
4 CHECK HARNESS BETWEEN COMBINATION METER AND IGNITION SWITCH CONNECTOR. Turn the ignition switch to ON. Measure the voltage between combination meter connector and chassis ground. Connector & terminal (i10) No. 19 (+) - Chassis ground (-)Is the voltage 10 V or more?Replace the meter case assembly of combination meter. Ref. to COMBINATION METER .Check the following item and repair if necessary. NOTE: Blown-out of fuse (F/B No. 5) Open circuit or short circuit to ground in harness of power supply circuit
5 CHECK FOR POOR CONTACT. Check for poor connection by shaking or pulling ECM harness.Does the malfunction indicator light illuminate?Repair the poor contact of ECM connector.Go to step 6 .
6 CHECK ECM CONNECTOR. Check the connection of ECM connector.Is the ECM connector correctly connected?Replace the ECM. Ref. to ENGINE CONTROL MODULE (ECM) .Repair the connection of ECM connector.
NOTE
In this case, repair the following item: Open circuit in harness between ECM and combination meter connector Poor contact of coupling connector
NOTE
Blown-out of fuse (F/B No. 5) Open circuit or short circuit to ground in harness of power supply circuit

DIAGNOSTIC PROCEDURE

The malfunction indicator light circuit is shorted.

Although malfunction indicator light comes on when the engine runs, DTC is not shown on the Subaru Select Monitor display.

  1. The malfunction indicator light circuit is open or shorted.
  2. The delivery (test) mode fuse circuit is open.

Malfunction indicator light does not blink during Inspection Mode.

The delivery (test) mode fuse circuit is shorted.

Malfunction indicator light blinks when delivery (test) mode fuse is not connected.

DTC DETECTING CONDITION

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0026 INTAKE VALVE CONTROL SOLENOID CIRCUIT RANGE/PERFORMANCE (BANK 1)»(ref-371929-S34659050602010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 2

Scheme 2: WIRING DIAGRAM
Scheme 2: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH RH CONNECTOR. Warm up the engine. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and variable valve lift diagnosis oil pressure switch RH. Measure the resistance of harness between ECM and variable valve lift diagnosis oil pressure switch RH connector. Connector & terminal (B137) No. 14 - (E71) No. 1Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and variable valve lift diagnosis oil pressure switch RH connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH RH CONNECTOR. Measure the resistance between the variable valve lift diagnosis oil pressure switch RH connector and engine ground. Connector & terminal (E71) No. 1 - Engine groundIs the resistance 1 Mohms, or more?Go to step 3 .Repair the short circuit to ground in harness between ECM and variable valve lift diagnosis oil pressure switch RH connector.
3 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH RH CONNECTOR. Turn the ignition switch to ON. Measure the voltage between the variable valve lift diagnosis oil pressure switch RH connector and engine ground. Connector & terminal (E71) No. 1 (+) - Engine ground (-)Is the voltage 10 V or more?Repair the short circuit to power supply in harness between ECM and variable valve lift diagnosis oil pressure switch RH connector.Go to step 4 .
4 CHECK DTC. Perform the Clear Memory Mode. After idling the engine, check the DTC. NOTE: For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .Is DTC displayed?Replace the oil switching solenoid valve RH. Ref. to OIL SWITCHING SOLENOID VALVE . After replacement, go to the next step. Go to step 5 .End.
5 CHECK DTC. Perform the Clear Memory Mode. After idling the engine, check the DTC. NOTE: For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .Is DTC displayed?Check for oil routing.End.
NOTE
In this case, repair the following item: Open circuit in harness between ECM and variable valve lift diagnosis oil pressure switch RH connector Poor contact of coupling connector
NOTE
For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .
NOTE
For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0028 INTAKE VALVE CONTROL SOLENOID CIRCUIT RANGE/PERFORMANCE (BANK 2)»(ref-371929-S26706079152010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 3

Scheme 3: WIRING DIAGRAM
Scheme 3: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH LH CONNECTOR. Warm up the engine. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and variable valve lift diagnosis oil pressure switch LH. Measure the resistance of harness between ECM and variable valve lift diagnosis oil pressure switch LH connector. Connector & terminal (B137) No. 13 - (E72) No. 1Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and variable valve lift diagnosis oil pressure switch LH connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH LH CONNECTOR. Measure the resistance between the variable valve lift diagnosis oil pressure switch LH connector and engine ground. Connector & terminal (E72) No. 1 - Engine groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit to ground in harness between ECM and variable valve lift diagnosis oil pressure switch LH connector.
3 CHECK HARNESS BETWEEN ECM AND VARIABLE VALVE LIFT DIAGNOSIS OIL PRESSURE SWITCH LH CONNECTOR. Turn the ignition switch to ON. Measure the voltage between the variable valve lift diagnosis oil pressure switch LH connector and engine ground. Connector & terminal (E72) No. 1 (+) - Engine ground (-)Is the voltage 10 V or more?Repair the short circuit to power supply in harness between ECM and variable valve lift diagnosis oil pressure switch LH connector.Go to step 4 .
4 CHECK DTC. Perform the Clear Memory Mode. After idling the engine, check the DTC. NOTE: For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .Is DTC displayed?Replace the oil switching solenoid valve LH. Ref. to OIL SWITCHING SOLENOID VALVE . After replacement, go to the next step. Go to step 5 .End.
5 CHECK DTC. Perform the Clear Memory Mode. After idling the engine, check the DTC. NOTE: For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .Is DTC displayed?Check for oil routing.End.
NOTE
In this case, repair the following item: Open circuit in harness between ECM and variable valve lift diagnosis oil pressure switch LH connector Poor contact of coupling connector
NOTE
For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .
NOTE
For detailed procedures, refer to "Clear Memory Mode". Ref. to CLEAR MEMORY MODE .

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0030 HO2S HEATER CONTROL CIRCUIT (BANK 1 SENSOR 1)»(ref-371929-S29435751782010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 4

Scheme 4: WIRING DIAGRAM
Scheme 4: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND FRONT OXYGEN (A/F) SENSOR CONNECTOR. Start and warm up the engine. Turn the ignition switch to OFF. Disconnect the connectors from ECM and front oxygen (A/F) sensor. Measure the resistance of harness between ECM and front oxygen (A/F) sensor connector. Connector & terminal (B136) No. 5 - (E24) No. 3: (B136) No. 6 - (E24) No. 3: (B136) No. 18 - (E24) No. 2: (B136) No. 19 - (E24) No. 1Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and front oxygen (A/F) sensor connector Poor contact of coupling connector
2 CHECK FRONT OXYGEN (A/F) SENSOR. Measure the resistance between front oxygen (A/F) sensor connector terminals. Terminals No. 3 - No. 4Is the resistance 2 - 3 ohms?Go to step 3 .Replace the front oxygen (A/F) sensor. Ref. to FRONT OXYGEN (A/F) SENSOR .
3 CHECK FOR POOR CONTACT. Check for poor contact of ECM and front oxygen (A/F) sensor connector.Is there poor contact of ECM or front oxygen (A/F) sensor connector?Repair the poor contact of ECM or front oxygen (A/F) sensor connector.Replace the front oxygen (A/F) sensor. Ref. to FRONT OXYGEN (A/F) SENSOR .
NOTE
In this case, repair the following item: Open circuit in harness between ECM and front oxygen (A/F) sensor connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0031 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 1)»(ref-371929-S08908700252010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0032 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)»(ref-371929-S38637932092010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0037 HO2S HEATER CONTROL CIRCUIT LOW (BANK 1 SENSOR 2)»(ref-371929-S25981700062010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 5

Scheme 5: WIRING DIAGRAM
Scheme 5: WIRING DIAGRAM
StepCheckYesNo
1 CHECK POWER SUPPLY TO REAR OXYGEN SENSOR. Turn the ignition switch to OFF. Disconnect the connector from rear oxygen sensor. Turn the ignition switch to ON. Measure the voltage between rear oxygen sensor connector and engine ground. Connector & terminal E250 No. 2 (+) - Engine ground (-)Is the voltage 10 V or more?Go to step 2 .Repair the power supply line. NOTE: In this case, repair the following item: Open circuit in harness between A/F, oxygen sensor relay connector and rear oxygen sensor connector Poor contact of A/F, oxygen sensor relay connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND REAR OXYGEN SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between the ECM and oxygen sensor connector. Connector & terminal (B135) No. 6 - E250 No. 1Is the resistance less than 1 ohms?Go to step 3 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and rear oxygen sensor connector Poor contact of coupling connector
3 CHECK GROUND CIRCUIT FOR ECM. Measure the resistance of harness between ECM and chassis ground. Connector & terminal (B134) No. 3 - Chassis ground: (B134) No. 4 - Chassis ground: (B134) No. 6 - Chassis ground: (B137) No. 1 - Chassis ground: (B137) No. 3 - Chassis groundIs the resistance less than 5 ohms?Go to step 4 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit of harness between ECM and engine ground Poor contact of ECM connector Poor contact of coupling connector
4 CHECK REAR OXYGEN SENSOR. Measure the resistance between rear oxygen sensor connector terminals. Terminals No. 2 - No. 1Is the resistance 5 - 7 ohms?Repair the poor contact of ECM connector.Replace the rear oxygen sensor. Ref. to REAR OXYGEN SENSOR .
NOTE
In this case, repair the following item: Open circuit in harness between A/F, oxygen sensor relay connector and rear oxygen sensor connector Poor contact of A/F, oxygen sensor relay connector Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit in harness between ECM and rear oxygen sensor connector Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit of harness between ECM and engine ground Poor contact of ECM connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0038 HO2S HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 2)»(ref-371929-S29359075502010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0068 MAP/MAF - THROTTLE POSITION CORRELATION»(ref-371929-S16296774492010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 6

Scheme 6: WIRING DIAGRAM
Scheme 6: WIRING DIAGRAM
StepCheckYesNo
1 CHECK AIR INTAKE SYSTEM.Are there holes, loose bolts or disconnection of hose on air intake system?Repair the air intake system.Go to step 2 .
2 CHECK MANIFOLD ABSOLUTE PRESSURE SENSOR. Start the engine and warm up engine until coolant temperature is higher than 75°C (167°F). For CVT models, set the select lever to "P" range or "N" range, and for MT models, place the shift lever in the neutral position. Turn the A/C switch to OFF. Turn all the accessory switches to OFF. Read the data of intake manifold pressure sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.Is the measured value 73.3 - 106.6 kPa (550 - 800 mmHg, 21.65 - 31.50 inHg) when the ignition is turned ON, and 20.0 - 46.7 kPa (150 - 350 mmHg, 5.91 - 13.78 inHg) during idling?Go to step 3 .Replace the manifold absolute pressure sensor. Ref. to MANIFOLD ABSOLUTE PRESSURE SENSOR .
3 CHECK THROTTLE OPENING ANGLE. Read the data of throttle position signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.Is the measured value less than 5% when throttle is fully closed?Go to step 4 .Replace the electronic throttle control. Ref. to THROTTLE BODY .
4 CHECK THROTTLE OPENING ANGLE.Is the measured value 85% or more when throttle is fully open?Replace the manifold absolute pressure sensor. Ref. to MANIFOLD ABSOLUTE PRESSURE SENSOR .Replace the electronic throttle control. Ref. to THROTTLE BODY .
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the General Scan Tool Instruction Manual.

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0076 INTAKE VALVE CONTROL SOLENOID CIRCUIT LOW (BANK 1)»(ref-371929-S22871503532010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 7

Scheme 7: WIRING DIAGRAM
Scheme 7: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND OIL SWITCHING SOLENOID VALVE RH CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and oil switching solenoid valve RH. Measure the resistance of harness between ECM and oil switching solenoid valve RH. Connector & terminal (B134) No. 7 - (E69) No. 1: (B134) No. 15 - (E69) No. 2Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and oil switching solenoid valve RH connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND OIL SWITCHING SOLENOID VALVE RH CONNECTOR. Measure the resistance between ECM and chassis ground. Connector & terminal (B134) No. 7 - Chassis ground: (B134) No. 15 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit to ground in harness between ECM and oil switching solenoid valve RH connector.
3 CHECK OIL SWITCHING SOLENOID VALVE RH. Measure the resistance between oil switching solenoid valve RH terminals. Terminals No. 1 - No. 2Is the resistance 6 - 12 ohms?Repair the poor contact of ECM and oil switching solenoid valve RH connector.Replace the oil switching solenoid valve RH. Ref. to OIL SWITCHING SOLENOID VALVE .
NOTE
In this case, repair the following item: Open circuit in harness between ECM and oil switching solenoid valve RH connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0077 INTAKE VALVE CONTROL SOLENOID CIRCUIT HIGH (BANK 1)»(ref-371929-S12557038772010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0082 INTAKE VALVE CONTROL SOLENOID CIRCUIT LOW (BANK 2)»(ref-371929-S21296637152010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 8

Scheme 8: WIRING DIAGRAM
Scheme 8: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND OIL SWITCHING SOLENOID VALVE LH CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and oil switching solenoid valve LH. Measure the resistance between ECM and oil switching solenoid valve LH. Connector & terminal (B134) No. 5 - (E70) No. 1: (B134) No. 14 - (E70) No. 2Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and oil switching solenoid valve LH connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND OIL SWITCHING SOLENOID VALVE LH CONNECTOR. Measure the resistance between ECM and chassis ground. Connector & terminal (B134) No. 5 - Chassis ground: (B134) No. 14 - Chassis groundIs the resistance 1 Mohms or more?Go to step 3 .Repair the short circuit to ground in harness between ECM and oil switching solenoid valve LH connector.
3 CHECK OIL SWITCHING SOLENOID VALVE LH. Measure the resistance between oil switching solenoid valve LH terminals. Terminals No. 1 - No. 2Is the resistance 6 - 12 ohms?Repair the poor contact of ECM and oil switching solenoid valve LH connector.Replace the oil switching solenoid valve LH. Ref. to OIL SWITCHING SOLENOID VALVE .
NOTE
In this case, repair the following item: Open circuit in harness between ECM and oil switching solenoid valve LH connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0083 INTAKE VALVE CONTROL SOLENOID CIRCUIT HIGH (BANK 2)»(ref-371929-S26055234612010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0101 MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFORMANCE»(ref-371929-S35484802322010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 9

Scheme 9: WIRING DIAGRAM
Scheme 9: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the mass air flow and intake air temperature sensor. Ref. to MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0102 MASS OR VOLUME AIR FLOW CIRCUIT LOW INPUT»(ref-371929-S23888638572010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0103 MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUT»(ref-371929-S33102461452010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0107 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE CIRCUIT LOW INPUT»(ref-371929-S10652344952010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0108 MANIFOLD ABSOLUTE PRESSURE/BAROMETRIC PRESSURE CIRCUIT HIGH INPUT»(ref-371929-S33207408422010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0111 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE»(ref-371929-S35133766042010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0112 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT LOW»(ref-371929-S11292453362010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0113 INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT HIGH»(ref-371929-S32697152672010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW»(ref-371929-S18936890372010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 10

Scheme 10: WIRING DIAGRAM
Scheme 10: WIRING DIAGRAM
StepCheckYesNo
1 CHECK CURRENT DATA. Start the engine. Read the data of engine coolant temperature sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.Is the temperature 150°C (302°F) or more?Go to step 2 .Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2 CHECK HARNESS BETWEEN ECM AND ENGINE COOLANT TEMPERATURE SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from ECM and engine coolant temperature sensor. Measure the resistance between ECM and chassis ground. Connector & terminal (B137) No. 22 - Chassis groundIs the resistance 1 Mohms or more?Replace the engine coolant temperature sensor. Ref. to ENGINE COOLANT TEMPERATURE SENSOR .Repair short circuit in harness to ground between ECM and engine coolant temperature sensor connector.
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.
NOTE
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0118 ENGINE COOLANT TEMPERATURE CIRCUIT HIGH»(ref-371929-S14481347672010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW»(ref-371929-S14038929372010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 11

Scheme 11: WIRING DIAGRAM
Scheme 11: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and electronic throttle control. Measure the resistance between ECM and chassis ground. Connector & terminal (B134) No. 19 - Chassis ground: (B134) No. 18 - Chassis ground: (B134) No. 18 - (B136) No. 4Is the resistance 1 Mohms or more?Go to step 2 .Repair the ground short circuit of harness between ECM and electronic throttle control connector.
2 CHECK SHORT CIRCUIT INSIDE THE ECM. Connect the connector to ECM. Measure the resistance between electronic throttle control connector and engine ground. Connector & terminal (E57) No. 6 - Engine groundIs the resistance 1 Mohms or more?Replace the electronic throttle control. Ref. to THROTTLE BODY .Repair the ground short circuit of harness between ECM and electronic throttle control connector. Replace the ECM if defective. Ref. to ENGINE CONTROL MODULE (ECM) .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH»(ref-371929-S08028130442010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0125 INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL»(ref-371929-S02005314832010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Engine does not return to idle.

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK TIRE SIZE.Is the tire size as specified and the same size as three other wheels?Go to step 2 .Replace the tire.
2 CHECK ENGINE COOLANT. Check the following items: Amount of engine coolant Engine coolant freeze Contamination of engine coolantIs the engine coolant normal?Go to step 3 .Fill or replace the engine coolant. Ref. to REPLACEMENT , Engine Coolant.
3 CHECK THERMOSTAT.Does the thermostat remain opened?Replace the thermostat. Ref. to THERMOSTAT .Replace the engine coolant temperature sensor. Ref. to ENGINE COOLANT TEMPERATURE SENSOR .

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0126 INSUFFICIENT ENGINE COOLANT TEMPERATURE FOR STABLE OPERATION»(ref-371929-S11696475382010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 12

Scheme 12: WIRING DIAGRAM
Scheme 12: WIRING DIAGRAM
StepCheckYesNo
1 CHECK ENGINE COOLANT TEMPERATURE SENSOR. Measure the resistance between engine coolant temperature sensor terminals when the engine coolant is cold and after warmed up. Terminals No. 1 - No. 2Is the resistance of engine coolant temperature sensor different between when engine coolant is cold and after warmed up?Repair the poor contact of ECM connector.Replace the engine coolant temperature sensor. Ref. to ENGINE COOLANT TEMPERATURE SENSOR .

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0128 COOLANT THERMOSTAT (ENGINE COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE)»(ref-371929-S10621347672010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Thermostat remains open.

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK ENGINE COOLANT.Is the engine coolant amount normal?Go to step 2 .Refill the engine coolant. Ref. to ENGINE COOLANT .
2 CHECK RADIATOR FAN. Start the engine. Check the radiator fan operation.Does the radiator fan continuously rotate for 3 minutes or more during idling?Repair radiator fan circuit. Ref. to RADIATOR MAIN FAN AND FAN MOTOR . and Ref. to RADIATOR SUB FAN AND FAN MOTOR .Replace the thermostat. Ref. to THERMOSTAT .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0131 O2 SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 1)»(ref-371929-S17918525602010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0132 O2 SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 1)»(ref-371929-S04143168712010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0133 O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)»(ref-371929-S34899696872010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0134 O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SENSOR 1)»(ref-371929-S18747460792010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0137 O2 SENSOR CIRCUIT LOW VOLTAGE (BANK 1 SENSOR 2)»(ref-371929-S21596008612010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0138 O2 SENSOR CIRCUIT HIGH VOLTAGE (BANK 1 SENSOR 2)»(ref-371929-S30065830752010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0139 O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 2)»(ref-371929-S03935951652010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0140 O2 SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 1 SENSOR 2)»(ref-371929-S03343582442010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0172 SYSTEM TOO RICH (BANK 1)»(ref-371929-S25239132282010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Engine stalls.
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK EXHAUST SYSTEM.Are there holes or loose bolts on exhaust system?Repair the exhaust system.Go to step 2 .
2 CHECK AIR INTAKE SYSTEM.Are there holes, loose bolts or disconnection of hose on air intake system?Repair the air intake system.Go to step 3 .
3 CHECK FUEL PRESSURE. WARNING: Place "NO OPEN FLAMES" signs near the working area. CAUTION: Be careful not to spill fuel. Measure the fuel pressure. Ref. to INSPECTION , Fuel Pressure. CAUTION: Release fuel pressure before removing the fuel pressure gauge.Is the measured value 339.5 - 360.5 kPa (3.5 - 3.7 kg/cm 2 , 49 - 52 psi)?Go to step 4 .Repair the following item. Fuel pressure is too high: Clogged fuel line or bent hose Fuel pressure is too low: Improper fuel pump discharge Clogged fuel line
4 CHECK ENGINE COOLANT TEMPERATURE SENSOR. Start the engine and warm up completely. Read the data of engine coolant temperature sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.Is the temperature 75°C (167°F) or more?Go to step 5 .Replace the engine coolant temperature sensor. Ref. to ENGINE COOLANT TEMPERATURE SENSOR .
5 CHECK MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR. Start the engine and warm up engine until coolant temperature is higher than 75°C (167°F). For CVT models, set the select lever to "P" range or "N" range, and for MT models, place the shift lever in the neutral position. Turn the A/C switch to OFF. Turn all the accessory switches to OFF. Read the data of mass air flow and intake air temperature sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.Is the measured value 2.0 - 5.0 g/s (0.26 - 0.66 lb/m)?Go to step 6 .Replace the mass air flow and intake air temperature sensor. Ref. to MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR .
6 CHECK MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR. Start the engine and warm up engine until coolant temperature is higher than 70°C (158°F). For CVT models, set the select lever to "P" range or "N" range, and for MT models, place the shift lever in the neutral position. Turn the A/C switch to OFF. Turn all the accessory switches to OFF. Open the front hood. Measure the ambient temperature. Read the data of mass air flow and intake air temperature sensor signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.Subtract ambient temperature from intake air temperature. Is the obtained value -10-50°C (-18 -90°F)?Repair the poor contact of ECM connector.Check the mass air flow and intake air temperature sensor. Ref. to MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR .
WARNING
Place "NO OPEN FLAMES" signs near the working area.
CAUTION
Be careful not to spill fuel.
CAUTION
Release fuel pressure before removing the fuel pressure gauge.
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0181 FUEL TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE»(ref-371929-S19687422682010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 13

Scheme 13: WIRING DIAGRAM
Scheme 13: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the fuel temperature sensor. Ref. to FUEL TEMPERATURE SENSOR .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0182 FUEL TEMPERATURE SENSOR "A" CIRCUIT LOW INPUT»(ref-371929-S03113184312010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0183 FUEL TEMPERATURE SENSOR "A" CIRCUIT HIGH INPUT»(ref-371929-S15482831582010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0196 ENGINE OIL TEMPERATURE SENSOR CIRCUIT RANGE/PERFORMANCE»(ref-371929-S17385954982010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 14

Scheme 14: WIRING DIAGRAM
Scheme 14: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the oil temperature sensor. Ref. to OIL TEMPERATURE SENSOR .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0197 ENGINE OIL TEMPERATURE SENSOR LOW»(ref-371929-S11187570382010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0198 ENGINE OIL TEMPERATURE SENSOR HIGH»(ref-371929-S22440111172010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start
  2. Improper idling
  3. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW»(ref-371929-S40086968632010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH»(ref-371929-S15040169602010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. Immediately at fault recognition (A misfire which could damage catalyst occurs.)
  3. GENERAL DESCRIPTION Ref. to «DTC P0304 CYLINDER 4 MISFIRE DETECTED»(ref-371929-S41796286062010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls
  2. Improper idling
  3. Rough driving
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW (BANK 1 OR SINGLE SENSOR)»(ref-371929-S29468663612010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Poor driving performance
  2. Knocking occurs.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 15

Scheme 15: WIRING DIAGRAM
Scheme 15: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND KNOCK SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between ECM connectors. Connector & terminal (B137) No. 2 - (B134) No. 29Is the resistance 600 kohms or more?Go to step 2 .Repair the poor contact of ECM connector.
2 CHECK KNOCK SENSOR. Disconnect the connector from knock sensor. Measure the resistance between knock sensor terminals. Terminals No. 1 - No. 2Is the resistance 600 kohms or more?Replace the knock sensor. Ref. to KNOCK SENSOR .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and knock sensor connector Poor contact of knock sensor connector Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit in harness between ECM and knock sensor connector Poor contact of knock sensor connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH (BANK 1 OR SINGLE SENSOR)»(ref-371929-S14578229522010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Poor driving performance
  2. Knocking occurs.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0335 CRANKSHAFT POSITION SENSOR "A" CIRCUIT»(ref-371929-S01114345422010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls.
  2. Failure of engine to start
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 16

Scheme 16: WIRING DIAGRAM
Scheme 16: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INSTALLATION CONDITION OF CRANKSHAFT POSITION SENSOR.Is the crankshaft position sensor installation bolt tightened securely?Go to step 2 .Tighten the crankshaft position sensor installation bolt securely. Ref. to CRANKSHAFT POSITION SENSOR .
2 CHECK CRANKSHAFT POSITION SENSOR. Turn the ignition switch to OFF. Remove the crankshaft position sensor. Measure the resistance between terminals of crankshaft position sensor connector. Terminals No. 1 - No. 2Is the resistance between 1 and 4 kohms?Go to step 3 .Replace the crankshaft position sensor. Ref. to CRANKSHAFT POSITION SENSOR .
3 CHECK HARNESS BETWEEN ECM AND CRANKSHAFT POSITION SENSOR CONNECTOR. Disconnect the connector from ECM. Measure the resistance of harness between ECM and crankshaft position sensor connector. Connector & terminal (B137) No. 17 - (E10) No. 1: (B137) No. 25 - (E10) No. 2Is the resistance less than 1 ohms?Repair the poor contact of ECM and crankshaft position sensor connector.Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and crankshaft position sensor connector Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit in harness between ECM and crankshaft position sensor connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0336 CRANKSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE»(ref-371929-S01174618722010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls
  2. Failure of engine to start
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0340 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR)»(ref-371929-S09311716082010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls.
  2. Failure of engine to start
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 17

Scheme 17: WIRING DIAGRAM
Scheme 17: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND CAMSHAFT POSITION SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM and camshaft position sensor. Measure the resistance of harness between ECM and camshaft position sensor connector. Connector & terminal (B137) No. 24 - (E15) No. 1: (B137) No. 30 - (E15) No. 2Is the resistance less than 1 ohms?Go to step 2 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and camshaft position sensor connector Poor contact of ECM connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND CAMSHAFT POSITION SENSOR CONNECTOR. Measure the resistance between camshaft position sensor connector and engine ground. Connector & terminal (E15) No. 1 - Engine groundIs the resistance 1 Mohms or more?Go to step 3 .Repair short circuit to ground in harness between ECM and camshaft position sensor connector. NOTE: The harness between both connectors are shielded. Remove the shield and repair the ground short circuit of the harness circuit.
3 CHECK INSTALLATION CONDITION OF CAMSHAFT POSITION SENSOR.Is the camshaft position sensor installation bolt tightened securely?Go to step 4 .Tighten the camshaft position sensor installation bolt securely. Ref. to CAMSHAFT POSITION SENSOR .
4 CHECK CAMSHAFT POSITION SENSOR. Remove the camshaft position sensor. Measure the resistance between terminals of camshaft position sensor connector. Terminals No. 1 - No. 2Is the resistance between 1 and 4kohms?Repair the poor contact of ECM or camshaft position sensor connector.Replace the camshaft position sensor. Ref. to CAMSHAFT POSITION SENSOR .
NOTE
In this case, repair the following item: Open circuit in harness between ECM and camshaft position sensor connector Poor contact of ECM connector Poor contact of coupling connector
NOTE
The harness between both connectors are shielded. Remove the shield and repair the ground short circuit of the harness circuit.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0341 CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR)»(ref-371929-S34119298112010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls
  2. Failure of engine to start
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0400 EXHAUST GAS RECIRCULATION FLOW»(ref-371929-S06271975952010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Movement performance problem when engine is low speed.
  2. Improper idling
  3. Movement performance problem
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 18

Scheme 18: WIRING DIAGRAM
Scheme 18: WIRING DIAGRAM
StepCheckYesNo
1 CHECK CURRENT DATA. Start the engine. Read data of intake manifold absolute pressure signal using Subaru Select Monitor or general scan tool. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.Is the measured value 53.3 kPa (400 mmHg, 15.75 inHg) or more?Make sure that the EGR valve, manifold absolute pressure sensor and throttle body are installed securely.Go to step 2 .
2 CHECK EGR VALVE. Remove the EGR valve.Are there any holes, clogged lines or foreign matters in the EGR system?Repair the EGR system.Replace the EGR valve. Ref. to EGR VALVE .
NOTE
Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". Ref. to SUBARU SELECT MONITOR . General scan tool For detailed operation procedures, refer to the general scan tool operation manual.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)»(ref-371929-S23804356072010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine stalls.
  2. Idle mixture is out of specifications.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK)»(ref-371929-S11862023182010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Fuel odor
  2. There is a hole of more than 1.0 mm (0.04 in) dia. in evaporation system or fuel tank.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 19

Scheme 19: WIRING DIAGRAM
Scheme 19: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUEL FILLER CAP. Turn the ignition switch to OFF. Check the fuel filler cap. NOTE: The DTC is stored in memory if fuel filler cap is or was loose or if the cap chain has caught while tightening.Is the fuel filler cap tightened securely?Go to step 2 .Tighten fuel filler cap securely.
2 CHECK FUEL FILLER CAP.Is the fuel filler cap genuine?Go to step 3 .Replace with a genuine fuel filler cap.
3 CHECK FUEL FILLER PIPE GASKET.Is there any damage to the seal between fuel filler cap and fuel filler pipe?Repair or replace the fuel filler cap and fuel filler pipe. Ref. to FUEL FILLER PIPE .Go to step 4 .
4 CHECK DRAIN VALVE. Install the delivery (test) mode fuse. Turn the ignition switch to ON. Operate the drain valve using the Subaru Select Monitor. NOTE: Drain valve operation can be executed using Subaru Select Monitor. For detailed procedures, refer to "SYSTEM OPERATION CHECK MODE". Ref. to SYSTEM OPERATION CHECK MODE .Does the drain valve operate?Go to step 5 .Replace the drain valve. Ref. to DRAIN VALVE .
5 CHECK PURGE CONTROL SOLENOID VALVE. Operate the purge control solenoid valve using the Subaru Select Monitor. NOTE: Purge control solenoid valve operation can be executed using Subaru Select Monitor. For detailed procedures, refer to "SYSTEM OPERATION CHECK MODE". Ref. to SYSTEM OPERATION CHECK MODE .Does the purge control solenoid valve operate?Go to step 6 .Replace the purge control solenoid valve. Ref. to PURGE CONTROL SOLENOID VALVE .
6 CHECK EVAPORATIVE EMISSION CONTROL SYSTEM LINE. Turn the ignition switch to OFF. Check the delivery (test) mode fuse is removed.Is there any hole of more than 1.0 mm (0.04 in) dia. on evaporation line?Repair or replace the evaporation line. Ref. to FUEL DELIVERY AND EVAPORATION LINES .Go to step 7 .
7 CHECK CANISTER.Is the canister damaged or is there a hole of more than 1.0 mm (0.04 in) dia. in it?Repair or replace the canister. Ref. to CANISTER .Go to step 8 .
8 CHECK FUEL TANK. Remove the fuel tank. Ref. to FUEL TANK .Is the fuel tank damaged or is there any hole of more than 1.0 mm (0.04 in) dia. in it?Repair or replace the fuel tank. Ref. to FUEL TANK .Go to step 9 .
9 CHECK ANY OTHER MECHANICAL TROUBLE IN EVAPORATIVE EMISSION CONTROL SYSTEM.Is there any hole of more than 1.0 mm (0.04 in) dia, crack, clogging, or disconnections, bend, misconnection of hoses or pipes in evaporative emission control system?Repair or replace the hoses or pipes.Repair the poor contact of ECM connector.
NOTE
The DTC is stored in memory if fuel filler cap is or was loose or if the cap chain has caught while tightening.
NOTE
Drain valve operation can be executed using Subaru Select Monitor. For detailed procedures, refer to "SYSTEM OPERATION CHECK MODE". Ref. to SYSTEM OPERATION CHECK MODE .
NOTE
Purge control solenoid valve operation can be executed using Subaru Select Monitor. For detailed procedures, refer to "SYSTEM OPERATION CHECK MODE". Ref. to SYSTEM OPERATION CHECK MODE .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0447 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT OPEN»(ref-371929-S08047401822010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0448 EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL CIRCUIT SHORTED»(ref-371929-S18098626852010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 20

Scheme 20: WIRING DIAGRAM
Scheme 20: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND DRAIN VALVE CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and drain valve. Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B135) No. 4 (+) - Chassis ground (-)Is the voltage 10 V or more?Repair the short circuit to power in the harness between ECM and drain valve connector.Go to step 2 .
2 CHECK DRAIN VALVE. Turn the ignition switch to OFF. Measure the resistance between drain valve terminals. Terminals No. 1 - No. 2Is the resistance less than 1 ohms?Replace the drain valve. Ref. to DRAIN VALVE .Repair the poor contact of ECM connector.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0451 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR»(ref-371929-S06932605252010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 21

Scheme 21: WIRING DIAGRAM
Scheme 21: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FUEL FILLER CAP. Turn the ignition switch to OFF. Open the fuel flap.Is the fuel filler cap tightened securely?Go to step 2 .Tighten fuel filler cap securely.
2 CHECK PRESSURE VACUUM LINE. NOTE: Check the following items. Disconnection, leakage and clogging of the vacuum hoses and pipes between fuel tank pressure sensor and fuel tank Disconnection, leakage and clogging of air ventilation hoses and pipes between fuel filler pipe and fuel tankIs there any fault in pressure/vacuum line?Repair or replace the hoses and pipes.Replace the fuel tank pressure sensor. Ref. to FUEL TANK PRESSURE SENSOR .
NOTE
Check the following items. Disconnection, leakage and clogging of the vacuum hoses and pipes between fuel tank pressure sensor and fuel tank Disconnection, leakage and clogging of air ventilation hoses and pipes between fuel filler pipe and fuel tank

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0452 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR LOW INPUT»(ref-371929-S13031029762010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0453 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR HIGH INPUT»(ref-371929-S07680335692010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0456 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (VERY SMALL LEAK)»(ref-371929-S37668865422010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Fuel odor
  2. There is a hole of more than 0.5 mm (0.020 in) dia. in evaporation system or fuel tank.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0457 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (FUEL CAP LOOSE/OFF)»(ref-371929-S26829389902010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Fuel odor
  2. Fuel filler cap loose or lost
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0458 EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE CIRCUIT LOW»(ref-371929-S37153664272010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0459 EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE CIRCUIT HIGH»(ref-371929-S29862304422010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0461 FUEL LEVEL SENSOR "A" CIRCUIT RANGE/PERFORMANCE»(ref-371929-S27030567182010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the fuel level sensor and fuel sub level sensor. Ref. to FUEL LEVEL SENSOR . Ref. to FUEL SUB LEVEL SENSOR .

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0463 FUEL LEVEL SENSOR "A" CIRCUIT HIGH»(ref-371929-S24521493742010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is DTC P0462 or P0463 displayed on the Subaru Select Monitor?Check the combination meter. Ref. to CHECK FUEL LEVEL SENSOR , INSPECTION, Combination Meter System.Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
NOTE
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0464 FUEL LEVEL SENSOR CIRCUIT INTERMITTENT»(ref-371929-S27750457422010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is DTC P0464 displayed on the display?Check the combination meter. Ref. to CHECK FUEL LEVEL SENSOR , INSPECTION, Combination Meter System.Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
NOTE
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0500 VEHICLE SPEED SENSOR "A"»(ref-371929-S23049410122010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK DTC OF VDC. Check DTC of VDC.Is DTC of VDC displayed?Perform the diagnosis according to DTC. Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Repair the poor contact of ECM connector.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0506 IDLE AIR CONTROL SYSTEM RPM LOWER THAN EXPECTED»(ref-371929-S23495381442010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Hard to start the engine.
  2. Engine does not start.
  3. Improper idling
  4. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0507 IDLE AIR CONTROL SYSTEM RPM HIGHER THAN EXPECTED»(ref-371929-S03523255962010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Engine keeps running at higher speed than specified idle speed.

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0512 STARTER REQUEST CIRCUIT»(ref-371929-S29304008532010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Failure of engine to start

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR»(ref-371929-S16693549522010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine does not start.
  2. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P0607 THROTTLE CONTROL SYSTEM CIRCUIT RANGE/PERFORMANCE»(ref-371929-S34175978372010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 22

Scheme 22: WIRING DIAGRAM
Scheme 22: WIRING DIAGRAM
StepCheckYesNo
1 CHECK INPUT VOLTAGE OF ECM. Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B136) No. 1 (+) - Chassis ground (-): (B137) No. 7 (+) - Chassis ground (-)Is the voltage 10 - 13 V?Go to step 2 .Repair the open or ground short circuit of power supply circuit.
2 CHECK INPUT VOLTAGE OF ECM. Start the engine. Measure the voltage between ECM and chassis ground. Connector & terminal (B136) No. 1 (+) - Chassis ground (-): (B137) No. 7 (+) - Chassis ground (-)Is the voltage 13 -15 V?Go to step 3 .Repair the open or ground short circuit of power supply circuit.
3 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from the ECM and electronic throttle control. Measure the resistance of harness between ECM and electronic throttle control connector. Connector & terminal (B134) No. 19 - (E57) No. 5: (B134) No. 29 - (E57) No. 3Is the resistance less than 1 ohms?Go to step 4 .Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM and electronic throttle control connector Poor contact of coupling connector
4 CHECK ECM GROUND HARNESS. Connect all connectors. Turn the ignition switch to ON. Measure the voltage between ECM and chassis ground. Connector & terminal (B134) No. 3 (+) - Chassis ground (-): (B134) No. 4 (+) - Chassis ground (-): (B134) No. 6 (+) - Chassis ground (-): (B137) No. 1 (+) - Chassis ground (-): (B137) No. 3 (+) - Chassis ground (-)Is the voltage less than 1 V?Repair the poor contact of ECM connector.Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in ground circuit Retightening of engine ground terminals Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit in harness between ECM and electronic throttle control connector Poor contact of coupling connector
NOTE
In this case, repair the following item: Open circuit in ground circuit Retightening of engine ground terminals Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW (AT MODEL)»(ref-371929-S41684467632010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 23

Scheme 23: WIRING DIAGRAM
Scheme 23: WIRING DIAGRAM
StepCheckYesNo
1 CHECK SELECT CABLE.Is there any fault In select cable?Repair or adjust the select cable. Ref. to SELECT CABLE .Go to step 2 .
2 CHECK INPUT SIGNAL OF ECM. Turn the ignition switch to ON. Place the select lever in other than "P" range and "N" range. Measure the voltage between ECM and chassis ground. Connector & terminal (B136) No. 35 (+) - Chassis ground (-)Is the voltage 10 V or more?Repair the poor contact of ECM connector.Go to step 3 .
3 CHECK HARNESS BETWEEN ECM AND TRANSMISSION HARNESS CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from ECM and transmission harness connector (T3). Measure the resistance between ECM and chassis ground. Connector & terminal (B136) No. 35 - Chassis groundIs the resistance 1 Mohms or more?Go to step 4 .Repair the ground short circuit of harness between ECM and transmission harness connector.
4 CHECK TRANSMISSION HARNESS CONNECTOR. Disconnect the connector from inhibitor switch. Measure the resistance between transmission harness connector and engine ground. Connector & terminal (T3) No. 12 - Engine groundIs the resistance 1 Mohms or more?Replace the inhibitor switch. Ref. to INHIBITOR SWITCH .Repair the ground short circuit of harness between transmission harness connector and inhibitor switch connector.

DIAGNOSTIC PROCEDURE

  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0851 NEUTRAL SWITCH INPUT CIRCUIT LOW (MT MODEL)»(ref-371929-S39751717552010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0852 PARK/NEUTRAL SWITCH INPUT CIRCUIT HIGH (AT MODEL)»(ref-371929-S38015397102010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P0852 NEUTRAL SWITCH INPUT CIRCUIT HIGH (MT MODEL)»(ref-371929-S12151739802010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper idling

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P1152 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (LOW) (BANK 1 SENSOR 1)»(ref-371929-S09414400892010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P1153 O2 SENSOR CIRCUIT RANGE/PERFORMANCE (HIGH) (BANK 1 SENSOR 1)»(ref-371929-S24488893662010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P1443 VENT CONTROL SOLENOID VALVE FUNCTION PROBLEM»(ref-371929-S32461415992010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.

Improper fuel supply

CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P1492 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT)»(ref-371929-S33118503552010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1494 EGR SOLENOID VALVE SIGNAL #2 CIRCUIT MALFUNCTION (LOW INPUT)»(ref-371929-S01383516852010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1496 EGR SOLENOID VALVE SIGNAL #3 CIRCUIT MALFUNCTION (LOW INPUT)»(ref-371929-S02373106692010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1498 EGR SOLENOID VALVE SIGNAL #4 CIRCUIT MALFUNCTION (LOW INPUT)»(ref-371929-S04493116872010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine breathing
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P1493 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (HIGH INPUT)»(ref-371929-S15611872322010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1495 EGR SOLENOID VALVE SIGNAL #2 CIRCUIT MALFUNCTION (HIGH INPUT)»(ref-371929-S03611169482010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1497 EGR SOLENOID VALVE SIGNAL #3 CIRCUIT MALFUNCTION (HIGH INPUT)»(ref-371929-S19723786272010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria. Ref. to «DTC P1499 EGR SOLENOID VALVE SIGNAL #4 CIRCUIT MALFUNCTION (HIGH INPUT)»(ref-371929-S12879050072010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine breathing
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT»(ref-371929-S21860338752010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 24

Scheme 24: WIRING DIAGRAM
Scheme 24: WIRING DIAGRAM
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check DTC using "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Go to step 2 .
2 CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR. Turn the ignition switch to OFF. Remove the starter relay. Disconnect the connectors from ECM and starter motor. Measure the resistance of harness between ECM and starter relay connector. Connector & terminal (B136) No. 16 - (B493) No. 3: NOTE: For CVT model, place the select lever in "P" range or "N" range.Is the resistance less than 1 ohms?Go to step 3 .NOTE: Check the following item and repair or replace if necessary. Open circuit of harness between ECM and starter relay connector Poor contact of coupling connector
3 CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR. Measure the resistance between ECM and chassis ground. Connector & terminal (B136) No. 16 - Chassis groundIs the resistance 1 Mohms or more?Repair the poor contact of ECM connector.Repair the short circuit to ground in harness between ECM and starter relay connector.
NOTE
For CVT model, place the select lever in "P" range or "N" range.
NOTE
Check the following item and repair or replace if necessary. Open circuit of harness between ECM and starter relay connector Poor contact of coupling connector

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION»(ref-371929-S40514792792010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P1602 CONTROL MODULE PROGRAMMING ERROR»(ref-371929-S29658458072010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Engine keeps running at higher speed than specified idle speed.
  2. Engine keeps running at a lower speed than the specified idle speed.
  3. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 1)»(ref-371929-S23376895572010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P2097 POST CATALYST FUEL TRIM SYSTEM TOO RICH (BANK 1)»(ref-371929-S30935334522010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2101 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE»(ref-371929-S04858081912010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW»(ref-371929-S40894085942010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
  3. Engine stalls.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH»(ref-371929-S17792724852010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT LOW INPUT»(ref-371929-S35628367132010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.

Scheme 25

Scheme 25: WIRING DIAGRAM
Scheme 25: WIRING DIAGRAM
StepCheckYesNo
1 CHECK HARNESS BETWEEN ECM AND ACCELERATOR PEDAL POSITION SENSOR CONNECTOR. Turn the ignition switch to OFF. Disconnect the connectors from ECM and accelerator pedal position sensor. Measure the resistance between ECM and chassis ground. Connector & terminal (B135) No. 21 - Chassis ground: (B135) No. 23 - Chassis ground: (B135) No. 23 - (B136) No. 4Is the resistance 1 Mohms or more?Go to step 2 .Repair the short circuit to ground in harness between ECM and accelerator pedal position sensor connector.
2 CHECK SHORT CIRCUIT INSIDE THE ECM. Connect the connector to ECM. Measure the resistance between accelerator pedal position sensor connector and chassis ground. Connector & terminal (B315) No. 6 - Chassis groundIs the resistance 1 Mohms or more?Replace the accelerator pedal. Ref. to ACCELERATOR PEDAL .Repair the short circuit to ground in harness between ECM and accelerator pedal position sensor connector. Replace the ECM if defective. Ref. to ENGINE CONTROL MODULE (ECM) .

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT HIGH INPUT»(ref-371929-S35112000682010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2127 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT LOW INPUT»(ref-371929-S04997373912010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2128 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT HIGH INPUT»(ref-371929-S39965791512010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION»(ref-371929-S36307049352010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2138 THROTTLE/PEDAL POSITION SENSOR/SWITCH "D"/"E" VOLTAGE CORRELATION»(ref-371929-S27002050042010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
  1. Improper idling
  2. Poor driving performance
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
  1. Detected when two consecutive driving cycles with fault occur.
  2. GENERAL DESCRIPTION Ref. to «DTC P2227 BAROMETRIC PRESSURE CIRCUIT RANGE/PERFORMANCE»(ref-371929-S42696727762010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check DTC using "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the ECM. Ref. to ENGINE CONTROL MODULE (ECM) . NOTE: The barometric pressure sensor is built into the ECM.
NOTE
The barometric pressure sensor is built into the ECM.

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2228 BAROMETRIC PRESSURE CIRCUIT LOW»(ref-371929-S06821333052010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Mode, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check DTC using "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the ECM. Ref. to ENGINE CONTROL MODULE (ECM) . NOTE: The barometric pressure sensor is built into the ECM.
NOTE
The barometric pressure sensor is built into the ECM.

DIAGNOSTIC PROCEDURE

  1. Immediately at fault recognition
  2. GENERAL DESCRIPTION Ref. to «DTC P2229 BAROMETRIC PRESSURE CIRCUIT HIGH»(ref-371929-S10727080052010091900000) , Diagnostic Trouble Code (DTC) Detecting Criteria.
CAUTIONAfter servicing or replacing faulty parts, perform Clear Memory Mode Ref. to OPERATION , Clear Memory Modes, and Inspection Mode Ref. to PROCEDURE , Inspection Mode.
StepCheckYesNo
1 CHECK FOR ANY OTHER DTC ON DISPLAY.Is any other DTC displayed?Check DTC using "List of Diagnostic Trouble Code (DTC)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .Replace the ECM. Ref. to ENGINE CONTROL MODULE (ECM) . NOTE: The barometric pressure sensor is built into the ECM.
NOTE
The barometric pressure sensor is built into the ECM.

DIAGNOSTIC PROCEDURE

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