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Home >> Lexus >> 2006 >> IS 250 RWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Automatic Transmission) >> Automatic Transmission System >> DTC P0985 Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR); DTC P0986 Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR) >> Description

DTC P0985 Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR); DTC P0986 Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR): Description

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

Shifting from 1st to 6th is performed in combination with "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, S1, S2, S3, S4 and SR which is controlled by the ECM. If an open or short circuit occurs in either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the vehicle to be operated smoothly. (In case of an open or short circuit, the ECM stops sending current to the circuit.) Fail safe function (See DIAGNOSIS SYSTEM  ).

DTC TROUBLE DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
P0985  ECM detects short in solenoid valve SR circuit 2 times when solenoid valve SR is operated (1-trip detection logic)
  • Short in shift solenoid valve SR circuit
  • Shift solenoid valve SR
  • ECM
P0986  ECM detects open in solenoid valve SR circuit 2 times when solenoid valve SR is not operated (1-trip detection logic)
  • Open in shift solenoid valve SR circuit
  • Shift solenoid valve SR
  • ECM