Ignition "OFF".

Connect VMI to GDS and set up an oscilloscope as follow (2-channel);

Channel A (+) : Pin No. 4 (TPS1 Signal) terminal of Throttle Body.

Channel A (-) : Ground

Channel B (+) : Pin No. 5 (TPS2 Signal) terminal of Throttle Body.

Channel B (-) : Ground

Ignition "ON" & Engine "ON".

Testing Condition : Idle to Acceleration(W.O.T).

Fig.1) Normal Throttle Position Sensor Signal waveform at idle to acceleration(W.O.T).

※ Sum of TPS1 and TPS2 signal voltage should equal to approximately 5V.

Is measured value within specification?

▶ Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors ( and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage. ▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Go to next procedure.

Ignition "OFF".

Disconnect Battery (-) terminal.

Refer to "Shop Manual" and disconnect Throttle Body connector.

Measure resistance between Pin No. 4 (TPS1 Signal) terminal and Pin No. 2 (TPS Supply) terminal of Throttle Body harness connector.

Measure resistance between Pin No. 5 (TPS2 Signal) terminal and Pin No. 2 (TPS Supply) terminal of Throttle Body harness connector.

Is measured value within specification?

	▶ Go to "System Inspection" procedure.
	▶ Carefully re-do this troubleshooting guide steps. ▶ If no problems were found with the circuits or connectors, Throttle Body and then go to "Verification of Vehicle Repair" procedure.