DTC B0021-12: Left Curtain Deployment Control 1 - Circuit short to battery: Action
- Visually inspect the left side air curtain AK2 connector, the locking plunger should be flush with the housing. If not, push the locking plunger in. Clear the DTCs and retest
- Refer to the electrical circuit diagrams and check the left side air curtain circuit for short circuit to power