Subaru Legacy (2005 year). Manual - part 187

EN(H4SO 2.5)(diag)-33

ENGINE (DIAGNOSTICS)

Inspection Mode

11.Inspection Mode

A: PROCEDURE

Perform the diagnosis shown in the following DTC table.
When performing the diagnosis not listed in “List of Diagnostic Trouble Code (DTC)”, refer the item on the
drive cycle. <Ref. to EN(H4SO 2.5)(diag)-38, Drive Cycle.>

NOTE:
KA and KS model is the same as 2.0 L model. Refer to EN(H4SO 2.0) section.

DTC

Item

Condition

P0031

HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

—

P0032

HO2S Heater Control Circuit High (Bank 1 Sensor 1)

—

P0037

HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

—

P0038

HO2S Heater Control Circuit High (Bank 1 Sensor 2)

—

P0102

Mass or Volume Air Flow Circuit Low Input

—

P0103

Mass or Volume Air Flow Circuit High Input

—

P0107

Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

—

P0108

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

—

P0112

Intake Air Temperature Sensor 1 Circuit Low

—

P0113

Intake Air Temperature Sensor 1 Circuit High

—

P0117

Engine Coolant Temperature Circuit Low

—

P0118

Engine Coolant Temperature Circuit High

—

P0122

Throttle/Pedal Position Sensor/Switch “A” Circuit Low

—

P0123

Throttle/Pedal Position Sensor/Switch “A” Circuit High

—

P0131

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

—

P0132

O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)

—

P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

—

P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

—

P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

—

P0171

System Too Lean (Bank 1)

—

P0172

System Too Rich (Bank 1)

—

P0222

Throttle/Pedal Position Sensor/Switch “B” Circuit Low

—

P0223

Throttle/Pedal Position Sensor/Switch “B” Circuit High

—

P0327

Knock Sensor 1 Circuit Low (Bank 1 or Single Sensor)

—

P0328

Knock Sensor 1 Circuit High (Bank 1 or Single Sensor)

—

P0335

Crankshaft Position Sensor “A” Circuit

—

P0340

Camshaft Position Sensor “A” Circuit (Bank 1 or Single Sensor)

—

P0400

Exhaust gas recirculation flow

—

P0458

Evaporative Emission System Purge Control Valve Circuit Low

—

P0462

Fuel Level Sensor “A” Circuit Low

—

P0463

Fuel Level Sensor “A” Circuit High

—

P0500

Vehicle Speed Sensor “A”

—

P0512

Starter Request Circuit

—

P0513

Incorrect Immobilizer Key

—

P0519

Idle Air Control System performance

—

P0600

Serial Communication Link

—

P0604

Internal Control Module Random Access Memory (RAM) Error

—

P0605

Internal Control Module Read Only Memory (ROM) Error

—

P0607

Control Module Performance

—

P0638

Throttle Actuator Control Range/Performance (Bank 1)

—

P0691

Fan 1 Control Circuit Low

—

P0692

Fan 1 Control Circuit High

—

P0851

Park/Neutral Position Switch Input Circuit Low

—

EN(H4SO 2.5)(diag)-34

ENGINE (DIAGNOSTICS)

Inspection Mode

P0852

Park/Neutral Position Switch Input Circuit High

—

P1152

O2 Sensor Circuit Range/Performance (Low) (Bank1 Sensor1)

—

P1153

O2 Sensor Circuit Range/Performance (High) (Bank1 Sensor1)

—

P1160

Return Spring Failure

—

P1492

EGR Solenoid Valve Signal #1 Circuit Malfunction (Low Input)

—

P1493

EGR Solenoid Valve Signal #1 Circuit Malfunction (High Input)

—

P1494

EGR Solenoid Valve Signal #2 Circuit Malfunction (Low Input)

—

P1495

EGR Solenoid Valve Signal #2 Circuit Malfunction (High Input)

—

P1496

EGR Solenoid Valve Signal #3 Circuit Malfunction (Low Input)

—

P1497

EGR Solenoid Valve Signal #3 Circuit Malfunction (High Input)

—

P1498

EGR Solenoid Valve Signal #4 Circuit Malfunction (Low Input)

—

P1499

EGR Solenoid Valve Signal #4 Circuit Malfunction (High Input)

—

P1518

Starter Switch Circuit Low Input

—

P1560

Back-up Voltage Circuit Malfunction

—

P1570

Antenna

—

P1571

Reference Code Incompatibility

—

P1572

IMM Circuit Failure

—

P1574

Key Communication Failure

—

P1576

EGI Control Module EEPROM

—

P1577

IMM Control Module EEPROM

—

P1578

Meter Failure

—

P2004

Intake Manifold Runner Control Stuck Open (Bank 1)

Engine coolant temperature at 

engine start is 

−5 — 5°C (−41 — 

41

°F)

P2005

Intake Manifold Runner Control Stuck Open (Bank 2)

Engine coolant temperature at 

engine start is 

−5 — 5°C (−41 — 

41

°F)

P2006

Intake Manifold Runner Control Stuck Closed (Bank 1)

—

P2007

Intake Manifold Runner Control Stuck Closed (Bank 2)

—

P2008

Intake Manifold Runner Control Circuit / Open (Bank 1)

—

P2009

Intake Manifold Runner Control Circuit Low (Bank 1)

—

P2011

Intake Manifold Runner Control Circuit / Open (Bank 2)

—

P2012

Intake Manifold Runner Control Circuit Low (Bank 2)

—

P2016

Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 1)

—

P2017

Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 1)

—

P2021

Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 2)

—

P2022

Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2)

—

P2101

Throttle Actuator Control Motor Circuit Range/Performance

—

P2102

Throttle Actuator Control Motor Circuit Low

—

P2103

Throttle Actuator Control Motor Circuit High

—

P2109

Throttle/Pedal Position Sensor A Minimum Stop Performance

—

P2122

Throttle/Pedal Position Sensor/Switch “D” Circuit Low Input

—

P2123

Throttle/Pedal Position Sensor/Switch “D” Circuit High Input

—

P2127

Throttle/Pedal Position Sensor/Switch “E” Circuit Low Input

—

P2128

Throttle/Pedal Position Sensor/Switch “E” Circuit High Input

—

P2135

Throttle/Pedal Position Sensor/Switch “A”/“B” Voltage Correlation

—

P2138

Throttle/Pedal Position Sensor/Switch “D”/“E” Voltage Correlation

—

P2503

Charging System Voltage Low

—

DTC

Item

Condition

EN(H4SO 2.5)(diag)-35

ENGINE (DIAGNOSTICS)

Inspection Mode

1. PREPARATION FOR THE INSPECTION 
MODE

1) Check that the battery voltage is more than 12 V
and fuel remains half [20 — 40 

2 (5.3 — 10.6 US

gal, 4.4 — 8.8 Imp gal)].
2) Lift-up the vehicle using a garage jack and place
it on rigid racks, or drive the vehicle onto free roll-
ers.

WARNING:
• Before lifting-up the vehicle, ensure parking
brakes are applied.
• Do not use a pantograph jack in place of a rig-
id rack.
• Secure a rope or wire to the front or rear tow-
ing hooks to prevent the lateral runout of front
wheels.
• Do not abruptly depress/release clutch pedal
or accelerator pedal during works even when
the engine is operating at low speeds since this
may cause vehicle to jump off free rollers.
• In order to prevent the vehicle from slipping
due to vibration, do not place any wooden
blocks or similar items between the rigid racks
and vehicle.
• Since the rear wheels will also rotate, do not
place anything near them. Also, make sure that
nobody goes in front of the vehicle.

2. SUBARU SELECT MONITOR

1) After clearing the memory, check for any remain-
ing unresolved trouble data. <Ref. to EN(H4SO
2.5)(diag)-40, Clear Memory Mode.>
2) Idle the engine.
3) Prepare the Subaru Select Monitor kit. <Ref. to
EN(H4SO 2.5)(diag)-7, PREPARATION TOOL,
General Description.>

4) Connect the diagnosis cable to Subaru Select
Monitor.
5) Insert the cartridge to Subaru Select Monitor.
<Ref. to EN(H4SO 2.5)(diag)-7, PREPARATION
TOOL, General Description.>

6) Connect the test mode connector (A) located at
the lower portion of glove box.

(A) Rigid racks

(B) Free rollers

EN-00041

(A)

(B)

EN-00038

EN-00039

PI-00201

(A)

EN(H4SO 2.5)(diag)-36

ENGINE (DIAGNOSTICS)

Inspection Mode

7) Connect the Subaru Select Monitor to data link
connector located in the lower portion of the instru-
ment panel (on the driver’s side).

CAUTION:
Do not connect any scan tools except Subaru 
Select Monitor or general scan tool.
8) Turn the ignition switch to ON (engine OFF), and
the Subaru Select Monitor power switch to ON.

9) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
10) On the «System Selection Menu» display
screen, select the {Engine} and press the [YES]
key.
11) Press the [YES] key after the information of en-
gine type has been displayed.
12) On the «Engine Diagnosis» screen, select the
{D Check} and press the [YES] key.
13) When the “Perform D Check?” is shown on the
screen, press the [YES] key.
14) Perform subsequent procedures as instructed
on the display screen.
• If trouble still remains in the memory, the corre-
sponding DTC appears on the display screen.

NOTE:
• For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
• For details concerning DTC, refer to “List of Diag-
nostic Trouble Code (DTC)”.
<Ref. to EN(H4SO 2.5)(diag)-69, List of Diagnostic
Trouble Code (DTC).>

• Release the parking brake.
• The speed difference between front and rear
wheels may light the ABS warning light, but this in-
dicates no malfunctions. When engine control diag-
nosis is finished, perform the ABS memory
clearance procedure of self-diagnosis function.

3. GENERAL SCAN TOOL

1) After performing the diagnostics and clearing the
memory, check for any remaining unresolved trou-
ble data. <Ref. to EN(H4SO 2.5)(diag)-40, Clear
Memory Mode.>
2) Idle the engine.
3) Connect the test mode connector (A) located at
the lower portion of glove box.

4) Connect the general scan tool to data link con-
nector 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:
• Ensure the select lever is placed in “P” position
before starting. (AT model)
• Depress the clutch pedal when starting the en-
gine. (MT model)
6) Using the select lever or shift lever, turn the “P”
position switch and the “N” position switch to ON.
7) Depress the brake pedal to turn brake switch
ON. (AT model)
8) Keep the engine speed in 2,500 — 3,000 rpm
range for 40 seconds.

(A) Power switch

EN-02533

(A)

EN-00040

PI-00201

(A)

EN-02533