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

Subaru Legacy BN/BS (2015-2019) Service Manual / Body control 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
B1010	BODY CONTROL SYSTEM (BIU) MALFUNCTION	—
B1011	BATTERY CONTROL POWER SUPPLY	—

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. Disconnect and reconnect the battery, and then wait for one minute 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
B1012	BATTERY BACKUP POWER SUPPLY	—

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. Disconnect and reconnect the back-up fuse, and then wait for one minute 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.

3. INSPECTION MODE 3

DTC	Item	Note
B1013	IGNITION POWER	—

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. After the ignition switch is ON, wait for one minute 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.

4. INSPECTION MODE 4

DTC	Item	Note
B1014	ACC POWER	—

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. After ACC is ON, wait for one minute 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.

5. INSPECTION MODE 5

DTC	Item	Note
B1015	KEY INTERLOCK CIRCUIT	CVT model without keyless access with push button start system

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. After the ignition switch is ON, press the shift knob switch and wait for 10 seconds 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.

6. INSPECTION MODE 6

DTC	Item	Note
B1016	SHIFT LOCK CIRCUIT	CVT model

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. After the ignition switch is ON, wait for 10 seconds or more without depressing the brake pedal. Or, after the ignition switch is ON, press the shift knob switch with the brake pedal depressed and wait for 10 seconds 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.

7. INSPECTION MODE 7

DTC	Item	Note
B1401	METER COLLATION	Model without keyless access with push button start system / model without immobilizer CM
B1402	IMMOBILIZER KEY COLLATION	Model without keyless access with push button start system / model without immobilizer CM
B1407	MET COMMUNICATION	Model without keyless access with push button start system / model without immobilizer CM
B1408	METER NON-VOLATILE MEMORY	Model without keyless access with push button start system / model without immobilizer CM
B1410	TRANSPONDER COMMUNICATION	Model without keyless access with push button start system / model without immobilizer CM
B1411	IMMOBILIZER ANTENNA	—
U0073	CAN FAILURE, BUS ‘OFF’ DETECTION	—
U0074	CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF	—
U0100	LOST COMMUNICATION WITH ECM/PCM "A"	—
U0122	LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE	—
U0128	LOST COMMUNICATION WITH PARK BRAKE CONTROL MODULE	—
U0131	LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE	—
U0151	LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE	—
U0155	LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE	—
U0167	LOST COMMUNICATION WITH IMMOBILIZER CONTROL MODULE	Model without keyless access with push button start system / model without immobilizer CM
U0327	SOFTWARE INCOMPATIBILITY WITH VEHICLE SECURITY CONTROL MODULE	Model with keyless access with push button start system
U0401	INVALID DATA RECEIVED FROM ECM/PCM "A"	—
U0416	INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE	—
U0423	INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE	—
U0426	INVALID DATA RECEIVED FROM IMMOBILIZER CONTROL MODULE	Model without keyless access with push button start system / model without immobilizer CM
U0427	INVALID DATA RECEIVED FROM VEHICLE SECURITY CONTROL MODULE	Model with keyless access with push button start system
U1673	LIN COMMUNICATION BUS ERROR BODY CONTROL MODULE	Depends on the customize setting
U0101	LOST COMMUNICATION WITH TCM	Depends on the customize setting
U0164	LOST COMMUNICATION WITH HVAC CONTROL MODULE	Depends on the customize setting
U0169	LOST COMMUNICATION WITH SUNROOF CONTROL MODULE	Depends on the customize setting
U0208	LOST COMMUNICATION WITH SEAT MEMORY	Depends on the customize setting
U0230	LOST COMMUNICATION WITH POWER REAR GATE CONTROL MODULE	Depends on the customize setting
U0402	INVALID DATA RECEIVED FROM TCM	Depends on the customize setting
U0424	INVALID DATA RECEIVED FROM HVAC CONTROL MODULE	Depends on the customize setting
U123C	LOST COMMUNICATION WITH HIGH BEAM ASSIST CONTROL MODULE	Depends on the customize setting
U153D	INVALID DATA RECEIVED FROM HIGH BEAM ASSIST CONTROL MODULE	Depends on the customize setting

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 OFF > ON, and wait for 10 seconds 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.

8. INSPECTION MODE 8

DTC	Item	Note
B1107	CAN COMMUNICATION (BIU) STUCK	—
U1500	KEYLESS UART COM. MALFUNCTION	—

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. Disconnect and reconnect the battery and wait for one minute or more. Then turn the ignition switch OFF > ON and wait for 10 seconds 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.

General diagnostic table inspection

Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC) Or check the following data under the current data display screen.ItemOperationSpecificationsNoteYESNODiagnostic codeDTC i ...

List of diagnostic trouble code (dtc) list

DTCItemNoteB1010BODY CONTROL SYSTEM (BIU) MALFUNCTION Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1010 BODY CONTROL SYSTEM (BIU) MALFUNCTIONB1011BATTERY CONTROL POWER SUPPLY Diagnos ...

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