Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc b1837 short in curtain airbag lh squib circuit (to ground)

Subaru Crosstrek Service Manual / Airbag system (diagnostics) / Diagnostic chart with trouble code / Dtc b1837 short in curtain airbag lh squib circuit (to ground)

AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code

DTC B1837 SHORT IN CURTAIN AIRBAG LH SQUIB CIRCUIT (TO GROUND)

Diagnosis start condition:

Ignition voltage is 10 V to 16 V.

DTC detecting condition:

Curtain airbag harness (LH) circuit is shorted to ground.

Curtain airbag module (LH) is faulty.

Airbag control module is faulty.

CAUTION:

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

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, curtain airbag module LH and the curtain airbag sensor LH.

Is there poor contact?

Replace the airbag rear harness along with body harness.

Diagnostic Chart with Trouble Code > DTC B1837 SHORT IN CURTAIN AIRBAG LH SQUIB CIRCUIT (TO GROUND)">Go to Step 2.

2.CHECK CURTAIN AIRBAG MODULE.

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

2) Disconnect the connector (AB31), and connect the connector (1N) in test harness N to connector (AB31).

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

4) 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 curtain airbag module (LH). Curtain Airbag Module">

Diagnostic Chart with Trouble Code > DTC B1837 SHORT IN CURTAIN AIRBAG LH SQUIB CIRCUIT (TO GROUND)">Go to Step 3.

3.CHECK AIRBAG REAR HARNESS (CURTAIN AIRBAG MODULE HARNESS LH).

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

2) Disconnect the connector (AB21) from seat belt pretensioner (LH).

3) Disconnect connector (AB19) from side airbag module (LH).

4) Disconnect the airbag resistor from test harness N.

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

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

7) Measure the resistance between connector (6AG) in the test harness AG and chassis ground.

Connector & terminal

(6AG) No. 1 — Chassis ground:

(6AG) No. 3 — Chassis ground:

Is the resistance 1 M? or more?

Diagnostic Chart with Trouble Code > DTC B1837 SHORT IN CURTAIN AIRBAG LH SQUIB CIRCUIT (TO GROUND)">Go to Step 4.

Replace the airbag rear harness along with body harness.

4.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 B1837 displayed?

Replace the airbag control module. Airbag Control Module">

Diagnostic Chart with Trouble Code > DTC B1837 SHORT IN CURTAIN AIRBAG LH SQUIB CIRCUIT (TO GROUND)">Go to Step 5.

5.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 b1836 open in curtain airbag lh squib circuit
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1836 OPEN IN CURTAIN AIRBAG LH SQUIB CIRCUITDiagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detecting condition:& ...

Dtc b1838 short in curtain shield airbag lh squib circuit (to +b)
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble CodeDTC B1838 SHORT IN CURTAIN SHIELD AIRBAG LH SQUIB CIRCUIT (TO +B)Diagnosis start condition:Ignition voltage is 10 V to 16 V.DTC detec ...

Other materials:

Dtc c2223 transmitter 3 pressure data abnormal
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C2223 TRANSMITTER 3 PRESSURE DATA ABNORMALNOTE:Refer to DTC C2224 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C2224 TRANSMITTER 4 PRESSURE DAT ...

Display settings
Touch the tab to set display. Item Function Day/Night Mode The "Auto", "Day" or "Night" key can be selected on the pop-up screen. When the "Auto" key is selected, the screen changes to day or night mode depending on the position of the headlight swi ...

Caution
DIFFERENTIALS > General DescriptionCAUTION• When performing any work, always wear work clothes, a work cap and protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary.• Remove contamination including dirt and corrosion before removal, installation, disasse ...

© 2016-2020 Copyright www.sucross.com