Output Devices

Fuel Injector
^ If the circuit is open, the injector will not operate, causing rough idle and misfiring.
^ If the circuit is shorted, the injector will inject fuel constantly causing a hard start or no start condition.

Ignition Control Module
^ If the spark output signal circuit has an open, Diagnostic Trouble Code No.213 is output and the engine will be at base ignition Timing.

Idle Air Control Valve
^ If the idle air control valve or circuit has an open or short, Diagnostic Trouble Code No.411 or 412 is output.
^ If the circuit is open, the idle air control valve will be fully closed causing rough idle, engine stalling and acceleration hesitation when cold.
^ If the circuit is shorted, the idle air control valve will be fully open causing high idle.

Fuel Pump Relay
^ If the circuit is open, the engine will not start.
^ If the circuit is shorted, the fuel pump will operate whenever the ignition switch is ON.

Purge Solenoid Valve
^ If the purge solenoid valve or circuit has an open or short, Diagnostic Trouble Code No.565 is output.
^ If the circuit is open, no symptom will be noticed.
^ If the circuit is shorted, the engine may stall at low speed.
^ A short circuit may cause an improper air/fuel ratio, causing rough idle and hard starting.

A/C Relay
^ If the circuit is open, A/C cutout will not occur.
^ If the circuit os shorted, A/C will not operate.

Pressure Regulator Control (PRC) Solenoid Valve
^ If PRC solenoid valve or circuit has an open or short, Diagnostic Trouble Code No.554 is output.
^ If the circuit is shorted, no symptom will be noticed.
^ If the circuit is open, the engine will be hard to start after heat soaked.

EGR Solenoid Valve (Vent)
^ If the solenoid valve or circuit has an open or short, Diagnostic Trouble Code NO.571 is output.
^ If the circuit is open or shorted, no symptom will be noticed.

EGR Solenoid Valve (Vacuum)
^ If the solenoid valve or circuit has an open or short, Diagnostic Trouble Code NO.572 is output.
^ If the circuit is shorted, the EGR valve will remain open, causing engine stalling and hard starting.
^ If the circuit is open, no symptom will be noticed.