Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b1655 front buckle switch rh failure

Subaru Legacy BN/BS (2015-2019) Service Manual / Airbag system (diagnostics) / Diagnostic chart with trouble code / Dtc b1655 front buckle switch rh failure

DIAGNOSIS START CONDITION:

Ignition voltage is 10 V to 16 V.

DTC DETECTING CONDITION:

Buckle switch RH failure (open, short, unit failure), seat harness malfunction (open, short), occupant detection system failure

WIRING DIAGRAM:

Occupant detection system Occupant Detection System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK DTC. Read the DTC of the occupant detection system. (Current malfunction)	Is DTC other than B1650 and B1655 displayed-	Perform the diagnosis according to DTC.	Diagnostic Chart with Trouble Code > DTC B1655 FRONT BUCKLE SWITCH RH FAILURE
2.CHECK POOR CONTACT OF CONNECTORS. Check for poor contact of the connectors between the occupant detection control module and buckle switch.	Is there poor contact-	Reconnect the connector. If the fault is not fixed, replace the occupant detection harness.	Diagnostic Chart with Trouble Code > DTC B1655 FRONT BUCKLE SWITCH RH FAILURE
3.CHECK BUCKLE SWITCH. 1) Turn the ignition switch to OFF, disconnect the battery ground terminal, and wait for 60 seconds. 2) Disconnect the buckle switch connector (AB60). 3) Connect the test harness AE and test harness connector Y to buckle switch connector (AB60). 4) Connect the battery ground terminal and turn the ignition switch to ON.	Does the airbag warning light illuminate for 6 seconds and go off-	Replace the buckle switch. Front Seat Belt > REMOVAL	Check the occupant detection harness, and if any fault is found, replace the occupant detection harness. If the fault is not fixed, replace the occupant detection system. Front Seat > DISASSEMBLY

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