Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2007 >> Optra5 LS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.8L (LDA) >> Diagnostic Information and Procedures >> DTC P0122 or P0123 >> Component Testing

Component Testing

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