1998 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE

Throttle Position (TP) Sensor: Notes

  1. Ensure engine is warmed to normal operating temperature. Disconnect throttle position sensor harness connector. See Fig 1 or Fig 2 . On I30, check resistance between connector terminals No. 2 and 3. On Q45, check resistance between connector terminals No. 1 and 2.
  2. On all models, if continuity is not correct, slightly loosen TP sensor mounting bolts. Rotate sensor body until resistance is correct. Tighten mounting bolts, and recheck resistance reading. If resistance is not as specified, replace TP sensor.
THROTTLE POSITION (TP) SENSOR RESISTANCE

Throttle Position (1) Ohms
I30
Fully Closed 500
Partially Opened 500-4000
Fully Opened 4000
Q45
Fully Closed 600
Partially Opened 600-4000
Fully Opened 5000
(1) Approximate values are given.
Fig 1: Checking Throttle Position (TP) Sensor Resistance (I30)
G96D09747Courtesy of NISSAN MOTOR CO., U.S.A.
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