Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b1660 passenger s airbag on indicator failure

AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code

DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE

Diagnosis start condition:

Ignition voltage is 10 V to 16 V.

DTC detecting condition:

Passenger’s airbag indicator is faulty.

Airbag control module is faulty.

Airbag main harness circuit is open or shorted.

Body harness circuit is open.

CAUTION:

Before performing diagnosis, refer to “CAUTION” in “General Description”. General Description > CAUTION">

Wiring diagram:

Airbag system Airbag System > WIRING DIAGRAM">

STEPCHECKYESNO

1.CHECK FOR POOR CONTACT.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Check that the connector between the airbag control module and MFD is securely connected.

Is there poor contact of any connector?

Repair the bulkhead harness. Or replace the airbag main harness along with body harness.

Diagnostic Chart with Trouble Code > DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE">Go to Step 2.

2.CHECK AIRBAG MAIN HARNESS.

1) Disconnect the connectors (AB6, AB17, AB18) from airbag control module.

2) Connect the battery ground terminal and turn the ignition switch to ON.

NOTE:

Neither of ON/OFF illuminates when it is normal.

Does the passenger’s airbag indicator illuminate?

Diagnostic Chart with Trouble Code > DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE">Go to Step 3.

Diagnostic Chart with Trouble Code > DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE">Go to Step 4.

3.CHECK AIRBAG MAIN HARNESS.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Remove the MFD and disconnect the connector (i122).

3) Connect the connector (1AG) in the test harness AG to the connectors (AB6, AB17, AB18).

4) Measure the resistance between connector (2AG) in the test harness AG and chassis ground.

Connector & terminal

(2AG) No. 9 — (2AG) No. 8:

(2AG) No. 9 — Chassis ground:

(2AG) No. 8 — Chassis ground:

Is the resistance 1 M? or more?

Replace the MFD. Multi-function Display (MFD) > REMOVAL">

Repair the bulkhead harness. Or replace the airbag main harness along with body harness.

4.CHECK AIRBAG MAIN HARNESS.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Disconnect the connectors (AB6, AB17, AB18) from the airbag control module, and connect the connector (1AH) in the test harness AH.

3) Connect the connector (2AH) in the test harness AH and the connector (1AG) in the test harness AG.

4) Connect the connectors (7AG) and (8AG) in the test harness AG.

5) Connect the battery ground terminal and turn the ignition switch to ON.

Does the passenger’s airbag indicator illuminate?

Replace the airbag control module. Airbag Control Module">

Diagnostic Chart with Trouble Code > DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE">Go to Step 5.

5.CHECK AIRBAG MAIN HARNESS.

1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.

2) Remove the MFD and disconnect the connector (i122).

3) Measure the resistance between connector (2AG) in the test harness AG and connector (i122).

Connector & terminal

(2AG) No. 9 — (i122) No. 11:

(2AG) No. 8 — (i122) No. 10:

Is the resistance less than 10 ??

Diagnostic Chart with Trouble Code > DTC B1660 PASSENGER’S AIRBAG ON INDICATOR FAILURE">Go to Step 6.

Repair the bulkhead harness. Or replace the airbag main harness along with body harness.

6.CHECK BODY HARNESS.

1) Turn the ignition switch to ON.

2) Measure the voltage between connector (i122) and chassis ground.

Connector & terminal

(i122) No. 3 (+) — Chassis ground (−):

Is the voltage 10 V or more?

Replace the MFD. Multi-function Display (MFD) > REMOVAL">

Check the power supply circuit of MFD.

Dtc b1655 front buckle switch rh failure
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1655 FRONT BUCKLE SWITCH RH FAILURENOTE:Refer to “Occupant Detection System” for details on DTC B1655. Diagnostic P ...

Dtc b1675 satellite safing sensor failure
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1675 SATELLITE SAFING SENSOR FAILUREDiagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detecting condition:• S ...

Other materials:

Installation
MECHANICAL(H4DO) > Cylinder BlockINSTALLATION1. Apply engine oil to the crankshaft bearing, and install the crankshaft bearing to the cylinder block.CAUTION:• Place a wood board wrapped with a waste cloth to prevent the knock pin damage and to stabilize the cylinder block before work.• ...

Dtc u0073 control module communication bus off
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC U0073 CONTROL MODULE COMMUNICATION BUS OFFDiagnosis start condition:Ignition voltage remains at 10 V or more for 1 second.DTC detecting condition:Detected when malfunction occurs in CAN line.NOTE:Perform the diagnosis for LAN sys ...

Dtc b1407 met communication
IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1407 MET COMMUNICATIONDTC DETECTING CONDITION:Communication failure between body integrated unit and combination meterCAUTION:When the combination meter is replaced, registration of the immobilizer system is r ...

© 2016-2025 Copyright www.sucross.com