Component Inspection

Check TPS resistance.
1. Ignition "OFF" & Engine "OFF".
2. Disconnect TPS connector.
3. Measure resistance between terminals 1 and 2 of the TPS connector (to TP sensor side).
  Specification: Approx. 3.5~6.5kΩ (with throttle valve fully closed) at 20°C (68°F)
  
  Fig 1: Measuring Resistance Between Terminals 1 And 2 Of TPS Connector
4. With still TPS connector disconnected, measure resistance between terminals 1 and 3 of the sensor connector (To sensor side).
5. Operate the throttle valve slowly from the idle position to the full open position and check the resistance changes smoothly in proportion with the throttle valve opening angle.
  Specification: Resistance changes smoothly in proportion with the throttle valve opening angle.
  
  Fig 2: Measuring Resistance Between Terminals 1 And 3 Of Sensor Connector
6. Is the measured resistance within specification?
  YES
  - Go to " 2 Check PCM" as below.
  NO
  - Substitute with a known - good TPS and check for proper operation.
  - If the problem is corrected, replace TPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check PCM.
1. Ignition "OFF" & Engine "OFF".
2. Connect Scantool and Ignition "ON".
3. Select simulation function on scantool.
4. Simulate voltage at terminal 3 of TP sensor signal connector.
  
  Fig 3: Screen Display - TPS Voltage Simulation
5. Is TP sensor signal value changed according to simulation voltage?
  YES
  - Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector. Thoroughly check connection looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good PCM and check for proper operation.
    If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.