Subaru Crosstrek Service Manual: Dtc b1823 short in side airbag rh (to +b)

Diagnosis start condition:

Ignition voltage is 10 V to 16 V.

DTC detecting condition:

• Side airbag harness (RH) is shorted to power supply.

• Side airbag module (RH) is faulty.

• Airbag control module is faulty.

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

1.CHECK POOR CONTACT OF CONNECTORS.

Check for poor contact of the connectors between the airbag control module, side airbag module RH and the side airbag sensor RH.

Is there poor contact?

Replace the airbag rear harness along with body harness.

Diagnostic Chart with Trouble Code > DTC B1823 SHORT IN SIDE AIRBAG RH (TO +B)">Go to Step 2.

2.CHECK SIDE 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 (AB24), and connect the connector (1AJ) in test harness AJ to connector (AB24).

3) Connect the airbag resistor to the test harness AJ connector (3AJ).

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 side airbag module (RH). Side Airbag Module > REMOVAL">

Diagnostic Chart with Trouble Code > DTC B1823 SHORT IN SIDE AIRBAG RH (TO +B)">Go to Step 3.

3.CHECK AIRBAG REAR HARNESS (SIDE AIRBAG MODULE HARNESS RH).

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

2) Disconnect the connector (AB26) from seat belt pretensioner (RH).

3) Disconnect the connector (AB33) from curtain airbag module (RH).

4) Disconnect the airbag resistor from test harness.

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

8) Measure the voltage between connector (5AG) in the test harness AG and chassis ground.

Connector & terminal

(5AG) No. 5 (+) — Chassis ground (−):

(5AG) No. 7 (+) — Chassis ground (−):

Is the voltage less than 1 V?

Diagnostic Chart with Trouble Code > DTC B1823 SHORT IN SIDE AIRBAG RH (TO +B)">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 B1823 displayed?

Replace the airbag control module. Airbag Control Module">

Diagnostic Chart with Trouble Code > DTC B1823 SHORT IN SIDE AIRBAG RH (TO +B)">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 b1822 short in side airbag rh (to ground)

Dtc b1825 short in side airbag lh

Other materials:

Steering angle sensor Replacement
VEHICLE DYNAMICS CONTROL (VDC) > Steering Angle SensorREPLACEMENTCAUTION:• If the steering wheel and steering angle sensor are removed, perform the following VDC setting mode.– Model without EyeSight: VDC sensor midpoint setting mode VDC Control Module and Hydraulic Control Unit (VDCCM& ...

Removal
EXTERIOR/INTERIOR TRIM > Console BoxREMOVAL1. Disconnect the ground cable from battery. NOTE">NOTE:On CVT models, shift the select lever into “N” before disconnecting the battery ground cable.2. Remove the console box assembly.(1) Release the claws, and then remove the boot - ...

MT models
1. Apply the parking brake. 2. Turn off unnecessary lights and accessories. 3. Depress the clutch pedal to the floor and shift the shift lever into neutral. Hold the clutch pedal to the floor while starting the engine. The starter motor will only operate when the clutch pedal is depress ...