Subaru Crosstrek Service Manual: Dtc b1655 front buckle switch rh failure

Diagnosis start condition:

Ignition voltage is 8 V to 16 V.

DTC detecting condition:

• Passenger’s buckle switch circuit is open, shorted or shorted to ground.

• Occupant detection system is faulty.

• Occupant detection harness is faulty.

1.CHECK DTC.

Read the DTC of the occupant detection system. Read Diagnostic Trouble Code (DTC) > OPERATION">

Is any of DTC B1760, B1761, B1771 and B1795 detected?

Perform the diagnosis according to DTC.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1655 FRONT BUCKLE SWITCH RH FAILURE">Go to Step 2.

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?

When the connector is not fully connected, reconnect the connector correctly. Replace the airbag harness if the connector is faulty.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1655 FRONT BUCKLE SWITCH RH FAILURE">Go to Step 3.

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 seat harness, and if any fault is found, replace the seat harness. If the fault is not fixed, replace the occupant detection system. Front Seat > DISASSEMBLY">

Dtc b1650 occupant detection system malfunction

Dtc b1760 occupant detection sensor mat

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