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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Automatic Transaxle) >> Automatic Transmission System >> DTC P0715: Input / Turbine Speed Sensor Circuit Malfunction; DTC P0717: Input Speed Sensor Circuit No Signal >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

The NT terminal of the TCM detects a pulse signal from the speed sensor (NT) (input RPM). The TCM calculates gear shifts comparing the speed sensor (NT) with the speed sensor (SP2)

While the vehicle is operating in 2nd, 3rd, 4th, 5th, 6th, 7th or 8th gear with the shift lever in D, if the input shaft revolution (speed) is less than 300 rpm*1 although the output shaft revolution (speed) is more than 1000 rpm*2, the TCM interprets this as a fault, illuminates the MIL and stores the DTC.

*1 Pulse is not output or is irregularly output.

*2 The vehicle speed is 40 km/h (25 mph) or more.

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