Active Commands

ACTIVE COMMANDS

Instrument Cluster Module

These commands allow the technician to verify the operation of instrument cluster module components and subsystems.

Generic Electronic Module

These commands allow the technician to verify the operation of the generic electronic module (GEM) and its associated subsystems.

Restraints Control Module

These commands allow the technician to either verify operation of supplemental restraint system (SRS) indicator lamps or zero the occupant classification sensor (if equipped).

Lamp Fault Codes

When 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 code is two digits. The first digit is flashed with a 0.5 second interval between pulses. There is a 2 second pause before the second digit 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 indicator will remain lit for the remainder of the key-on cycle. If there are multiple LFCs, each LFC will flash in order of priority.

Each LFC has one or more associated diagnostic test codes (DTCs).


Diagnostic Test Codes (DTCs)

While the lamp fault codes (LFCs) are an indication of a general concern in the passive restraints system, the diagnostic test codes (DTCs) are more specific. The DTCs can be retrieved from the restraints control module (RCM) with a scan tool via the data link connector (DLC).