Test C: DTC B1870 - Air Bag Warning Indicator CKT Short to Battery

C1:

C2:

C2 - C3:

C4:

C4 - C5:

Normal Operation
If the restraints control module detects an open or short to battery on the air bag warning indicator circuit, it will store Diagnostic Trouble Code (DTC) B1870 in memory. If any other DTCs are detected with this DTC active, the secondary air bag warning will be activated.

Possible Causes
An air bag indicator circuit short to battery can be caused by:
^ Wiring, terminals, or connectors.
^ RCM.