DTC Troubleshooting: P0120 (7)
DTC P0120:
 ISV Position Sensor A Circuit Malfunction
NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.
  1. Turn the ignition switch ON (II).
  1. Check INTAKE SHUTTER VALVE (ISV) POSITION SENSOR A in the DATA LIST with the HDS.
Is about 0.2−4.53 V indicated?
YES -
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the intake shutter valve and the ECM.■
NO -
Go to Step 3 .
  1. Turn the ignition switch OFF.
  1. Turn the ignition switch ON (II).
  1. Reset the ECM with the HDS.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0120 indicated?
YES -
Check for poor connections or loose terminals at the intake shutter valve and the ECM, then go to Step 1 .
NO -
Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■