Component Inspection

1. After engine starting, connect Scan Tool and monitor the "TPS1" & "TPS2" parameters on the Scan Tool data list.

   Specification : Refer to "SIGNAL WAVEFORM & DATA " in the "General Information" procedure

   1. TPS1 : Output voltage increases smoothly in proportion with the throttle valve opening angle after starting.
      • Engine "ON" & Closed throttle status : Approx. 0.3~0.7V, Engine "ON" & Wide open throttle : Approx. 4.45~4.85V
   2. TPS2 : Output voltage decreases smoothly in inverse proportion with the throttle valve opening angle after starting.
      • Engine "ON" & Closed throttle status : Approx. 4.3~4.7V, Engine "ON" & Wide open throttle : Approx. 0.15~0.55V
        Fig 1: Identifying Signal Waveform

        
2. Is sensor data near the specified value?

   YES 

   • Go to TERMINAL AND CONNECTOR INSPECTION 

   NO 

   • Check TPS for contamination, deterioration, or damage. Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
   NOTE: It is necessary to perform the TPS adaptation procedure with Scan tool when the throttle body assembly or ECM is replaced.

■ TPS adaptation procedure

1. Erase previous TPS adaptation value using Scan tool.
2. Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions
   • Enable conditions : Battery>10V & Intake Air Temp. >5.3°C (41.5°F) & 5.3°C (41.5°F) < Engine Coolant Temp. < 99.8°C (211.6°F)
3. After TPS adaptation, the system normality should be confirmed by reading out "FMY" on the Scan Tool