Component Inspection

1. Disconnect TPS connector and measure resistance between terminals 1 and 3 of the TPS connector.
   1. Specification: Approx. 1.5~3.5 kΩ (with throttle valve fully closed) at 20 °C (68 °F)
      Fig 1: Measuring Resistance Between Terminals 1 And 3 Of TPS Connector

      
2. With still TPS connector disconnected, measure resistance between terminals 2 and 3 of the TPS connector.
3. Operate the throttle valve slowly from the idle position to the full open position and verify that the resistance changes smoothly in proportion with the throttle valve opening angle.
   1. Specification: Resistance changes smoothly in proportion with the throttle valve opening angle.
      Fig 2: Throttle Valve Opening Angle Graph

      
4. Is TPS within specifications?

   YES

   1. Substitute with a known-good ETS unit or PCM and check for proper operation. If the problem is corrected, replace ETS unit or PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure. If ETS unit needs to be replaced, do initialization after it is replaced.

   NO

   1. Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then do initialization. And go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Procedure of Initialization

1. Erase the trouble codes on PCM
2. Turn the ignition key on less than 1 second and turn it off (Do not start the engine)
3. Turn the ignition key off and keep this condition until the main relay is turned off. (It will takes 10 second)
4. Turn ignition key on more than 1 second to record the throttle motor position on the EEPROM