Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 208

EN(H4DOTC)(diag)-56

Drive Cycle

ENGINE (DIAGNOSTICS)

3. DRIVE CYCLE B

Diagnostic procedure:

1) Drive at 10 km/h (6 MPH) or more.

2) Stop the vehicle and idle for ten minutes.

4. DRIVE CYCLE C

DTC

Item

Condition

*P0125

Insufficient Coolant Temperature for Closed Loop Fuel Control

«Coolant Temp.» at engine
start: Less than 15°C (5°F)

*P0171

System Too Lean (Bank 1)

Complete diagnosis with drive
cycle A or C as well.

*P0172

System Too Rich (Bank 1)

Complete diagnosis with drive
cycle A or C as well.

*P0300

Random/Multiple Cylinder Misfire Detected

Complete diagnosis with drive
cycle A or C as well.

*P0301

Cylinder 1 Misfire Detected

Complete diagnosis with drive
cycle A or C as well.

*P0302

Cylinder 2 Misfire Detected

Complete diagnosis with drive
cycle A or C as well.

*P0303

Cylinder 3 Misfire Detected

Complete diagnosis with drive
cycle A or C as well.

*P0304

Cylinder 4 Misfire Detected

Complete diagnosis with drive
cycle A or C as well.

*P0506

Idle Air Control System RPM Lower Than Expected

—

*P0507

Idle Air Control System RPM Higher Than Expected

—

*P2096

Post Catalyst Fuel Trim System Too Lean (Bank 1)

Complete diagnosis with drive
cycle A or C as well.

*P2097

Post Catalyst Fuel Trim System Too Rich (Bank 1)

Complete diagnosis with drive
cycle A or C as well.

*P219A

Bank 1 Air-Fuel Ratio Imbalance

Complete diagnosis with drive
cycle C as well.

DTC

Item

Condition

*P0030

HO2S Heater Control Circuit (Bank 1 Sensor 1)

—

*P0068

MAP/MAF - Throttle Position Correlation

—

*P0101

Mass or Volume Air Flow Circuit Range/Performance

—

P0134

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

—

*P013A

O2 Sensor Slow Response - Rich to Lean (Bank 1 Sensor 2)

—

*P013B

O2 Sensor Slow Response - Lean to Rich (Bank 1 Sensor 2)

—

*P013E

O2 Sensor Delayed Response - Rich to Lean (Bank 1 Sensor 2)

—

*P013F

O2 Sensor Delayed Response - Lean to Rich (Bank 1 Sensor 2)

—

*P0171

System Too Lean (Bank 1)

Complete diagnosis with drive
cycle A or B as well.

*P0172

System Too Rich (Bank 1)

Complete diagnosis with drive
cycle A or B as well.

P0244

Turbo/Super Charger Wastegate Solenoid “A” Range/Performance

—

P0246

Turbo/Super Charger Wastegate Solenoid “A” High

—

*P0300

Random/Multiple Cylinder Misfire Detected

Complete diagnosis with drive
cycle A or B as well.

*P0301

Cylinder 1 Misfire Detected

Complete diagnosis with drive
cycle A or B as well.

*P0302

Cylinder 2 Misfire Detected

Complete diagnosis with drive
cycle A or B as well.

EN(H4DOTC)(diag)-57

Drive Cycle

ENGINE (DIAGNOSTICS)

Diagnostic procedure:

Drive according to the drive pattern described below.

*P0303

Cylinder 3 Misfire Detected

Complete diagnosis with drive
cycle A or B as well.

*P0304

Cylinder 4 Misfire Detected

Complete diagnosis with drive
cycle A or B as well.

*P0441

Evaporative Emission Cont. Sys. Incorrect Purge Flow

—

*P1449

Evaporative Emission Cont. Sys. Air Filter Clog

—

P2004

Intake Manifold Runner Control Stuck Open (Bank 1)

—

P2005

Intake Manifold Runner Control Stuck Open (Bank 2)

—

*P2096

Post Catalyst Fuel Trim System Too Lean (Bank 1)

Complete diagnosis with drive
cycle A or B as well.

*P2097

Post Catalyst Fuel Trim System Too Rich (Bank 1)

Complete diagnosis with drive
cycle A or B as well.

*P219A

Bank 1 Air-Fuel Ratio Imbalance

Complete diagnosis with drive
cycle B as well.

(A)

Place the shift lever in neutral
position, and let the engine idle for
10 seconds or more.

(D)

Decelerate with fully closed throt-
tle to 64 km/h (40 MPH) or less.

(G)

Stop the vehicle with throttle fully
closed.

(B)

Accelerate to 97 km/h (60 MPH)
or more within 20 seconds.

(E)

Drive for 20 seconds or more at
64 km/h (40 MPH) or less.

(H)

Vehicle speed km/h (MPH)

(C)

Drive for 20 seconds or more at
97 km/h (60 MPH) or more.

(F)

Accelerate to 97 km/h (60 MPH)
or more within 10 seconds.

(I)

Sec.

DTC

Item

Condition

EN-00842

(C)

(H)

(I)

(60)

97

64 (40)

(B)

(A)

(F)

(D)

(E)

150

100

50

0

(G)

EN(H4DOTC)(diag)-58

Drive Cycle

ENGINE (DIAGNOSTICS)

5. DRIVE CYCLE E

Diagnostic procedure:

1) Make sure that the battery voltage is 10.9 V or more.

2) Perform the Clear Memory Mode. <Ref. to EN(H4DOTC)(diag)-63, Clear Memory Mode.>

3) Drive for approximately 30 L (7.9 US gal, 6.6 Imp gal) of fuel.
NOTE:

• It is acceptable to drive the vehicle intermittently.

• Do not disconnect the battery terminals while diagnosing. (Data will be cleared by disconnecting the bat-

tery terminals.)

6. DRIVE CYCLE F

Diagnostic procedure:

1) Make sure that the engine coolant temperature is less than 30°C (86°F).

2) Drive according to the drive pattern described below.

NOTE:

• There is no given transition time between idling and cruising.

• Driving at constant speed only on a downhill causes smaller engine load and may result in failure to obtain

a right diagnostic result.

• When the engine stops while performing drive cycle F, perform it again from the state of procedure 1).

DTC

Item

Condition

*P0461

Fuel Level Sensor “A” Circuit Range/Performance

—

DTC

Item

Condition

*P0111

Intake Air Temperature Sensor 1 Circuit Range/Performance

—

(A)

Vehicle speed

(B)

Elapsed time

(1)

Idle the engine for 10 seconds or
more after engine start.

(4)

Drive for 30 seconds or more at a
constant speed of 80 km/h (50
MPH) or more.

(6)

Drive for 30 seconds or more at a
constant speed of 80 km/h (50
MPH) or more.

(2)

Drive for 8 minutes or more at a
constant speed of 80 km/h (50
MPH) or more.

(5)

Stop the vehicle and idle for 30
seconds or more.

(7)

Stop the vehicle and idle for 30 sec-
onds.

(3)

Stop the vehicle and idle for 30
seconds or more.

(A)

(B)

0

80 km/h
(50 MPH)

EN-07588

(1)

(4)

(6)

(2)

(3)

(5)

(7)

EN(H4DOTC)(diag)-59

Drive Cycle

ENGINE (DIAGNOSTICS)

7. DRIVE CYCLE G

Diagnostic procedure:

1) Disconnect the battery negative terminal, and reconnect after at least 10 seconds have passed.

2) Idle the engine until engine coolant temperature is 80°C (176°F) more.

3) Stop the engine to decrease the engine coolant temperature down to 40°C (104°F) or less.
NOTE:

Do not let engine coolant temperature drop to 5°C (41°F) or less.

4) Idle the engine until engine coolant temperature is 80°C (176°F) more.

5) Stop the engine to decrease the engine coolant temperature down to 40°C (104°F) or less.
NOTE:

Do not let engine coolant temperature drop to 5°C (41°F) or less.

6) Idle the engine.

8. DRIVE CYCLE H

Diagnostic procedure:

1) Perform the Clear Memory Mode. <Ref. to EN(H4DOTC)(diag)-63, Clear Memory Mode.>

2) With the ignition switch ON (engine stopped), read the value in «Coolant Temp.» and «Mass Air Flow».

<Ref. to EN(H4DOTC)(diag)-40, Subaru Select Monitor.>

3) If the values from step 2) satisfy the following conditions, idle the engine for one minute.
Condition:

|Engine coolant temperature — Intake air temperature|

≤

5°C (9°F)

NOTE:

• If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied.

• Do not move the shift lever from neutral position during idling.

DTC

Item

Condition

*

P0410

Secondary Air Injection System

—

*

P0411

Secondary Air Injection System Incorrect Flow Detected

—

P0414

Secondary Air Injection System Switching Valve “A” Circuit Shorted

—

P0417

Secondary Air Injection System Switching Valve “B” Circuit Shorted

—

P2258

Air System Control "A" Circuit High

—

*

P2440

Secondary Air Injection System Switching Valve Stuck Open (Bank1)

—

*

P2441

Secondary Air Injection System Switching Valve Stuck Closed (Bank1)

—

*

P2442

Secondary Air Injection System Switching Valve Stuck Open (Bank2)

—

*

P2443

Secondary Air Injection System Switching Valve Stuck Closed (Bank2)

—

DTC

Item

Condition

*

P050A

Cold Start Idle Air Control System Performance

—

*

P050B

Cold Start Ignition Timing Performance

—