Input Devices

Mass Air Flow Sensor
^ If the mass air flow sensor or circuit has an open or short, Diagnostic Trouble Code No.157, 158 or 159 is output.
^ A malfunction in the mass air flow sensor circuit may cause lack of power, poor acceleration, hesitate at driveaway or vehicle shake on deceleration.

Intake Air Temperature Sensor
^ If the intake air temperature sensor or circuit has an open or short, Diagnostic Trouble Code No.112 or 113 is output.
^ If the intake air temperature sensor circuit fails, no particular symptom will be noticed.

Throttle Position Sensor
^ If the throttle position sensor or circuit has an open or short, Diagnostic Trouble Code No. 121,122 or 123 is output.
^ If throttle position sensor circuit fails, rough idle, poor acceleration or shift shock may occur.

Heated Oxygen Sensor
^ If the heated oxygen sensor or circuit has an open or short, Diagnostic Trouble Code No.172 or 173 is output
^ If the heated oxygen sensor circuit fails, poor fuel economy may occunoccurmshaft position sensor (In Distributor)
^ If the Camshaft position sensor or circuit has an open or short, Diagnostic Trouble Code No.211 is output.
^ If the Camshaft position sensor circuit fails, the engine will stall and will not restart.

A/C Signal (Air Conditioning Pressure Switch)
^ If the A/C is on during the Diagnostic Trouble Code check, Diagnostic Trouble Code No.539 is output.
^ If the circuit is open, wide open throttle A/C cutout will not occur.
^ If the circuit is shorted, the A/C will not operate.

Engine Coolant Temperature Sensor
^ If the engine coolant temperature sensor or circuit has an open or short, Diagnostic Trouble Code no.116,117 or 118 is output.
^ If the engine coolant temperature sensor circuit fails, no torque converter lockup will occur

Brake Switch
^ If the brake switch or circuit has an open or short, Diagnostic Trouble Code No.536 is output.
^ If the circuit is open, torque converter clutch will not disengage.
^ If the circuit is shorted, the stoplights will not operate and torque converter clutch will not occur.

Vehicle Speedometer sensor
^ If the vehicle speed sensor or circuit has an open or short, Diagnostic Trouble Code No.452 is output.
^ If the vehicle speed sensor circuit fails, no 3-4 or 4-3 shifts or torque converter clutch will occur

Transaxle Range Switch
^ If the vehicle is not in park or neutral during Diagnostic Trouble Code check, Diagnostic Trouble Code No.522 is output.

Fuel Pump Monitor Signal
^ If the circuit is shorted, the fuel pump will not operate and the engine will stall and not restart.

Ignition Diagnostic Monitor Signal (Ignition Control Module)
^ If the ignition diagnostic monitor signal has an open or short, Diagnostic Trouble Code No.212 is output.

EGR Valve Position Sensor
^ If the EGR valve position sensor or circuit has an open or short, Diagnostic Trouble Code No.327, 332 or 337 is output.
^ In the above conditions, the EGR valve will be fully closed.