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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Continuously Variable Transmission (Diagnostics)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0776: Pressure Control Solenoid "B" Performance/Stuck Off >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different variant/trim than selected.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Diagnosis 1 
ABS (1): Measured output shaft speed ** - Measured secondary pulley shaft speed/1.322
> Table 1 rpm
Diagnosis 2 
Measured secondary pulley shaft speed
> 600 rpm
(1) ABS: Absolute value

Measured output shaft speed: Measured rear output shaft speed x 0.543 *** + Measured front output shaft speed x (1 - 0.543)
0.543: Center differential gear ratio
VEHICLE SPEED SPECIFICATION

Vehicle speed (MPH) 0 13 25 38 50 63 75
ABS: Measured output shaft speed - Measured primary pulley shaft speed (rpm) 150 100 100 100 100 100 100
Vehicle speed (MPH) 88 100 113 125 138 150 159
ABS: Measured output shaft speed - Measured primary pulley shaft speed| (rpm) 100 100 100 100 100 100 100

Time needed for diagnosis:  5 seconds

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.