1997 PCED OBDII-Diesel
SECTION 5C: Pinpoint Tests

AA: Idle Validation Switch (IVS)
  AA: Pinpoint Tests  

Signal Functions

The idle validation switch (IVS) provides the powertrain control module (PCM) with a signal to verify when the accelerator pedal is in the idle position.


Any detected malfunction of the IVS will illuminate the CHECK ENGINE light.

DTC Description

P0220 = Throttle Switch B circuit malfunction

P0221 = Throttle Switch B circuit performance



  AA: Pinpoint Tests