Ignition switch "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 switch "ON" & Engine "ON"
Testing Condition : Idle to Acceleration(W.O.T).
Specification : Refer to signal waveform below
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 the measured value within specification?
 | ▶ Carefully re-do this troubleshooting guide steps. ▶ If the diagnostics have been performed correctly with no failure found and no problems were found with the circuits or connectors, replace the ECM/PCM and then go to "Verification of Vehicle Repair" procedure. caution When replacing the ECM/PCM, the vehicle equipped with the immobilizer must be performed procedure as below. [In the case of installing used ECM/PCM] 1) Perform "ECM Neutral mode" procedure with GDS. (Refer to "Immobilizer" in BE group) 2) After finishing "ECM Neutral mode", perform "Key teaching" procedure with GDS. (Refer to "Immobilizer" in BE group) [In the case of installing new ECM/PCM] Perform "Key teaching" procedure with GDS. (Refer to "Immobilizer" in BE group) caution When replacing the ECM/PCM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below. [In the case of installing used ECM/PCM] 1) Perform "ECM Neutral mode" procedure with GDS. (Refer to "Smart key" in BE group) 2) After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM/PCM learns the smart key information automatically. [In the case of installing new ECM/PCM] Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM/PCM learns the smart key information automatically. |
 | ▶ 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. caution - Install the component with the specified torques. - Note that internal damage may occur when the component is dropped or mis- treated. |
