Test E: LFC 18/DTC B1890 - Pad Warning Lamp Circuit Short to Battery

PINPOINT TEST E: LFC 18/DTC B1890 - PAD WARNING LAMP CIRCUIT SHORT TO BATTERY

E1-E2:

E2-E4:

E5:

Normal Operation
When the ignition is in the ON position, the PAD indicator prove-out period is initiated by the restraints control module (RCM). The RCM briefly activates the PAD indicator to verify to the occupants correct functional operation of the PAD indicator.

If the RCM detects a short to battery on the passenger air bag deactivation (PAD) warning lamp circuit, it will store diagnostic trouble code (DTC) B1890 in memory and flash lamp fault (LFC) 18 (or higher priority code if 1 exists) on the air bag indicator.

Possible Causes
A PAD indicator circuit short to battery can be caused by:
- damaged wiring, terminals or connectors.
- a faulted PAD indicator.
- a faulted RCM.