Output Components

Output components are diagnosed for proper response to control module commands. Components where functional monitoring is not feasible will be monitored for circuit continuity and out-of-range values if applicable. Output components to be monitored include, but are not limited to the following circuits:

• Idle air control (IAC) motor or an idle speed control (ISC)
• Control module controlled evaporative emission (EVAP) canister purge valve
• A/C relays
• Cooling fan relay
• Vehicle speed sensor (VSS) output
• Malfunction indicator lamp (MIL) control