AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code

DTC 21

DTC DETECTING CONDITION:

Airbag control module is faulty.

CAUTION:

Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the ground terminal from battery, and wait 20 seconds or more before starting to work.

STEPCHECKYESNO

1.CHECK IF DTC 21 IS INDICATED.

1) Read the DTC.

2) Perform the Clear Memory Mode.

3) Read the DTC again.

Does Subaru Select Monitor display DTC 21?

Replace the airbag control module.

Temporary poor contact occurs.