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Home >> Suzuki >> 2006 >> Verona Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - DTC P0030 Through P0175 >> DTC P0121: Throttle Position (TP) Sensor 1 Performance >> Test Description
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Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. This step verifies that a condition exists. If there is a condition with a TP sensor circuit, the scan tool will display Disagree.
  2. 5. This step tests for high resistance in the 5 volt reference circuit of the TP sensors. If the DMM does not display more than the specified voltage there is high resistance in the circuit.
  3. 8. This step tests for high resistance in the low reference circuit of the TP sensor. The ECM must be completely powered down to obtain an accurate resistance reading. If may take up to 30 minutes for the ECM to power down after the ignition key is remove. Removal of the ECM/TCM fuse allows the ECM to power down completely.
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