Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection mode procedure

Subaru Legacy BN/BS (2015-2019) Service Manual / Hvac system (diagnostics) / Inspection mode procedure

It is possible to diagnose the DTC by performing the indicated inspection mode. After correcting the DTC, perform a necessary inspection mode and make sure that the function is resumed correctly and the DTC is recorded.

1. INSPECTION MODE 1

DTC

Item

Note

B1430

IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN

—

B1431

IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT

—

B1432

AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER)

—

B1433

AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)

—

B1434

EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN

—

B1435

EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT

—

B1436

AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER)

—

B1437

AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER)

—

B1438

MODE DOOR ACTUATOR CIRCUIT OPEN

—

B1439

MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

—

B1440

AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER)

—

B1441

AIR MIX DOOR ACTUATOR CIRCUIT STUCK (PASSENGER)

—

B1442

AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER)

—

B1443

MODE DOOR ACTUATOR CIRCUIT STUCK

—

B1446

MODE DOOR ACTUATOR CIRCUIT STUCK

—

B1448

REAR VENT DOOR ACTUATOR CIRCUIT OPEN

—

B1449

REAR VENT DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT

—

B144A

REAR VENT DOOR ACTUATOR CIRCUIT STUCK

—

B14A3

REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN

—

B14A4

REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT

—

B14A5

REFRIGERANT FLOW SENSOR CIRCUIT OPEN

—

B14A6

REFRIGERANT FLOW SENSOR CIRCUIT SHORT-CIRCUIT

—

B14A7

VARIABLE SOLENOID VALVE CIRCUIT

—

B14A8

COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT

—

B14B1

SEAT HEATER THERMISTOR CIRCUIT OPEN (DRIVER)

—

B14B2

SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)

—

B14B3

SEAT HEATER THERMISTOR CIRCUIT OPEN (PASSENGER)

—

B14B4

SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)

—

U0002

CAN COMMUNICATION ERROR

—

U0028

HEATER CONTROL PANEL COMMUNICATION ERROR

—

U0073

CAN FAILURE, BUS ‘OFF’ DETECTION

—

Diagnostic procedure:

1. Perform the Clear Memory Mode. Clear Memory Mode

2. Read the DTC and check that the DTC is not displayed. Read Diagnostic Trouble Code (DTC)

NOTE:

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis according to DTC. After solving the DTC, repeat from step 1).

3. Turn the ignition switch to ON and then leave it for 1 second or more.

4. Read the DTC and check that the DTC is not displayed. Read Diagnostic Trouble Code (DTC)

NOTE:

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis according to DTC.

2. INSPECTION MODE 2

DTC

Item

Note

B14A1

SUNLOAD SENSOR CIRCUIT LOW/OPEN

—

B14A2

SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT

—

Diagnostic procedure:

1. Perform the Clear Memory Mode. Clear Memory Mode

2. Read the DTC and check that the DTC is not displayed. Read Diagnostic Trouble Code (DTC)

NOTE:

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis according to DTC. After solving the DTC, repeat from step 1).

3. Park the vehicle in the place subjected to direct sunlight.

4. Turn the ignition switch to ON and then leave it for 1 second or more.

5. Read the DTC and check that the DTC is not displayed. Read Diagnostic Trouble Code (DTC)

NOTE:

If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis according to DTC.

Electrical component location location
1. ENGINE COMPARTMENT(1)Pressure sensor(2)A/C compressor(Refrigerant flow sensor, variable flow change solenoid)(3)Ambient sensor2. PASSENGER COMPARTMENT(1)Evaporator sensor(5)Sunload sensor(9)A/C con ...

List of diagnostic trouble code (dtc) list
NOTE:When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor in direct sunlight.DTCItemNoteB1430IN-VEHICLE ...

Other materials:

General diagnostic table inspection
SymptomsPossible causeCorrective actionWheel is out of balance.Improperly inflated tireAdjust the tire pressure.Uneven wearCheck the tire referring to “Abnormal tire wear” in this table, carry out the procedure and replace the tire.Front wheel alignmentCheck or adjust the front wheel ali ...

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