LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2008 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.8L (L79) >> Diagnostic Information and Procedures >> DTC P1121 or P1122 >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector at the TP sensor.
  2. Test for 1,160-1,175 ohms between the 5-volt reference terminal 2 and the low reference terminal 1.
    • If not within the specified range, replace the TP sensor.
  3. Test the resistance between the signal terminal 3 and the low reference terminal 1. Sweep the TP sensor through the entire range. The resistance should vary between 1,530-630 ohms without any spikes or dropouts.
    • If not within the specified range or is erratic, replace the TP sensor.
  4. Apply 5 volts and ground to the applicable terminals of the TP sensor, and measure the voltage between the signal terminal 3 and the low reference terminal 1. Sweep the TP sensor through the entire range. The voltage should vary between 4.3-0.6 volts without any spikes or dropouts.
    • If not within the specified range or is erratic, replace the TP sensor.
scientia non olet · About LEMON Manuals