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Home >> Lexus >> 2010 >> IS 350 >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Automatic Transmission (A760H) (Diagnostic Codes (P0500-U0100) & Circuit Tests)) >> Automatic Transmission System >> DTC P0781: 1-2 Shift (1-2 Shift Valve) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2010 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

Both of the following conditions are met: Condition (A), and Condition (B), (C) or (D)

MALFUNCTION (A):

Turbine speed/Output speed (NT/NO) 3.40 or more, and 7.50 or less
(This means actual gear is 1st)
MALFUNCTION (B):

Turbine speed/Output speed (NT/NO) 1.28 or more, and 1.53 or less
(This means actual gear is 3rd)
MALFUNCTION (C):

Turbine speed - Output speed x 4th gear ratio
(NT - NO x 4th gear ratio)
1,000 rpm or more
MALFUNCTION (D):

Turbine speed - Output speed x 5th gear ratio
(NT - NO x 5th gear ratio)
1,000 rpm or more