Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b1800 short in driver s airbag

AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code

DTC B1800 SHORT IN DRIVER’S AIRBAG

Diagnosis start condition:

Ignition voltage is 10 V to 16 V.

DTC detecting condition:

Airbag main harness circuit is shorted.

Airbag module harness (driver’s side) circuit is shorted.

Roll connector circuit is shorted.

Driver’s airbag module is faulty.

Airbag control module is faulty.

CAUTION:

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

NOTE:

Prior to starting work, prepare two AIRBAG RESISTORs (98299PA040).

Wiring diagram:

Airbag system Airbag System > WIRING DIAGRAM">

STEPCHECKYESNO

1.CHECK POOR CONTACT OF CONNECTORS.

Check for poor contact of the connectors between the airbag control module and the driver’s airbag module.

Is there poor contact?

Replace the airbag harness.

Diagnostic Chart with Trouble Code > DTC B1800 SHORT IN DRIVER’S AIRBAG">Go to Step 2.

2.CHECK DRIVER’S AIRBAG MODULE.

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

2) Remove the driver’s airbag module.

3) Connect the connector (1N) in the test harness N to the connector (AB38).

4) Connect the airbag resistor to the connector (2N) of test harness N.

5) Connect the connector (1Q) in the test harness Q to connector (AB37).

6) Connect the airbag resistor to the connector (2Q) in the test harness Q.

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

Does the airbag warning light illuminate for six seconds and go off?

Replace the driver’s airbag module. Driver’s Airbag Module">

Diagnostic Chart with Trouble Code > DTC B1800 SHORT IN DRIVER’S AIRBAG">Go to Step 3.

3.CHECK ROLL CONNECTOR AND AIRBAG MAIN HARNESS (DRIVER’S AIRBAG HARNESS).

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

2) Remove the console front panel and disconnect the connector (AB9).

3) Disconnect the driver’s knee airbag module connector (AB66).

4) Disconnect the airbag resistor from the connector (2N) in test harness N and from the connector (2Q) in test harness Q.

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

6) Measure the resistance between connector (2Q) terminals in test harness Q.

Connector & terminal

(2Q) No. 1 — (2Q) No. 2:

Is the resistance 1 M? or more?

Diagnostic Chart with Trouble Code > DTC B1800 SHORT IN DRIVER’S AIRBAG">Go to Step 5.

Diagnostic Chart with Trouble Code > DTC B1800 SHORT IN DRIVER’S AIRBAG">Go to Step 4.

4.CHECK AIRBAG MAIN HARNESS (DRIVER’S AIRBAG HARNESS).

1) Remove the instrument panel lower cover and column cover, and disconnect the connector (AB7) from (AB2).

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

Connector & terminal

(3AG) No. 1 — (3AG) No. 3:

Is the resistance 1 M? or more?

Replace the roll connector. Roll Connector">

Replace the airbag main harness along with body harness.

5.CHECK AIRBAG CONTROL MODULE.

1) Connect all connectors.

2) Clear the memory. Clear Memory Mode">

3) Perform the Inspection Mode. Inspection Mode">

4) Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)">

Is DTC B1800 displayed?

Replace the airbag control module. Airbag Control Module">

Diagnostic Chart with Trouble Code > DTC B1800 SHORT IN DRIVER’S AIRBAG">Go to Step 6.

6.CHECK FOR ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Check DTC using “List of Diagnostic Trouble Code (DTC)”. List of Diagnostic Trouble Code (DTC)">

Finish the diagnosis.

Dtc b16f1 passenger s seat belt warning failure
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B16F1 PASSENGER’S SEAT BELT WARNING FAILUREDiagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detecting conditi ...

Dtc b1801 open in driver s airbag
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1801 OPEN IN DRIVER’S AIRBAGDiagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detecting condition:• Air ...

Other materials:

Electrical component location Location
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Electrical Component LocationLOCATION1. CONTROL MODULE(1)Transmission control module (TCM)(3)AWD light(5)Body integrated unit(2)AT OIL TEMP light(4)Engine control module (ECM)(6)Data link connector2. SENSOR(1)Secondary speed sensor(3)Primary spee ...

Inspection
CONTROL SYSTEMS > MT Gear Shift LeverINSPECTION1. Check the parts (bushing, cushion rubber, spacer, boot, stay and rod, etc.) for deformation, damage and wear. If necessary, correct or replace faulty parts. Compare the removed parts with new parts to judge if there are damages or not.(A)Bushing(B ...

Dtc b1577 imm control module eeprom
IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B1577 IMM CONTROL MODULE EEPROMDTC DETECTING CONDITION:• Body integrated unit malfunctioning• Failed to access ROM inside the body integrated unit.CAUTION:When the body integrated unit is replaced, ...

© 2016-2022 Copyright www.sucross.com