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

Subaru Legacy BN/BS (2015-2019) Service Manual / Immobilizer (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
B1401	METER COLLATION	—
B1402	IMMOBILIZER KEY COLLATION	—
B1407	MET COMMUNICATION	—
B1408	METER NON-VOLATILE MEMORY	—
B1410	TRANSPONDER COMMUNICATION	—
B1411	IMMOBILIZER ANTENNA	—
B1413	IMMOBILIZER CONTROL MODULE BATTERY 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. Remove the ignition key from the ignition switch, and insert again.

4. Turn the ignition switch OFF > ON, and wait for 10 seconds 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.

2. INSPECTION MODE 2

DTC	Item	Note
B1412	IMMOBILIZER CONTROL MODULE CAN REGISTER STUCK	—
B1414	IMMOBILIZER CONTROL MODULE NON-VOLATILE MEMORY	—

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. Turn the ignition switch to ON.

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.

3. INSPECTION MODE 3

DTC	Item	Note
B1570	ANTENNA	—
B1571	REFERENCE CODE INCOMPATIBILITY (IMMOBILIZER CM TO ECM)	—
B1572	IMM CIRCUIT EXCEPT ANTENNA CIRCUIT	—
B1574	KEY COMMUNICATION	—
B1575	INCORRECT IMMOBILIZER KEY	—
B1576	EGI CONTROL MODULE EEPROM	—
B1577	IMM CONTROL MODULE EEPROM	—
B1578	METER	—

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. Start the engine, and then run the engine at idle for 10 seconds or more. Or, disconnect and reconnect the battery, 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.

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