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: a lamp fault code (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). The LFC is made up of two numbers. Each of the two numbers is one or two digits depending on the fault that is present. The two numbers that make up a LFC are separated by a hyphen (-) to clearly distinguish between the two 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 an LFC.
Each LFC is flashed three times after which the air bag indictor will remain lit for the remainder of the key-on cycle. If there are multiple LFCs, each code will be stored for retrieval by a diagnostic scan tool, but only the highest priority LFC will flash on the air bag indicator.