Without Scan Tool
LAMP FAULT CODESWhen the restraints control module (RCM) detects a system fault, it will cause the air bag indicator to flash a coded sequence of lamp fault codes (LFC). The RCM is capable of communicating a LFC for each specific fault that is present, including each flagged fault of a bit-mapped diagnostic trouble code (DTC) (except for DTC B2792 (cross link between firing loops) which only flashes one LFC). The LFC is made up of 2 numbers. Each of the 2 numbers is 1 or 2 digits, depending on the fault that is present. The 2 numbers that make up a LFC are separated by a hyphen (-) to clearly distinguish between the 2 numbers. The first number is flashed with a 0.5-second interval between pulses. There is a 2-second pause before the second number is flashed, which also has a 0.5-second interval between pulses. There is a 5-second pause between each display of a LFC.
Each LFC is flashed 3 times after which the air bag indictor will remain lit for the remainder of the key-on cycle. If there are multiple LFCs, each LFC will flash in order of priority.