Test C: DTC B1870 - Lamp Air Bag Warning Indicator Circuit Short To Battery

PINPOINT TEST C: DTC B1870 - LAMP AIR BAG WARNING INDICATOR CIRCUIT SHORT TO BATTERY

Normal Operation
During normal operation, the air bag warning indicator will illuminate continuously for approximately 6 seconds and then go out after the ignition switch is placed to the ON or START and no air bag fault exists. The air bag warning indicator will remain illuminated continuously after 5 cycles of a LFC, if a fault exists.

If the restraints control module (RCM) detects a short to battery on the air bag warning indicator circuit, it will store DTC B1870 in memory. If any other DTCs are detected with this DTC active, the secondary air bag warning tone will be activated.

- DTC B1870 Air Bag Warning Indicator Circuit Short to Battery - If the RCM detects a short to battery on the air bag warning indicator circuit, it will set this DTC.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- RCM
- Instrument cluster (IC) module

C1-C3:

C3-C5: