LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2017 >> Envision Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Automatic >> Diagnostic Information and Procedures >> DTC B0223, B022A, B0233, B023A, B0408, B0418, B0428, or B3531: Recirculate Position Command/Air Flow Control/Air Flow Control/Temperature Control/Rear Air Flow Control >> Conditions for Setting the DTC

Conditions for Setting the DTC

B023A 02 

The stepper motor supply output is shorted to ground.

B0223 01, B0233 01, B0408 01, B0418 01, B0428 01 or B3531 01 

At least one of the stepper motor control circuits is shorted to voltage when motor starts moving. Faults are not detected when motor is already running or target position is already reached.

B0223 02, B0233 02, B0408 02, B0418 02, B0428 02 or B3531 02 

At least one of the stepper motor control circuits is shorted to ground when motor starts moving. Faults are not detected when motor is already running or target position is already reached.

B0223 04, B0223 06, B0233 04, B0233 06, B0408 04, B0408 06, B0418 04, B0418 06, B0428 04, B0428 06, B3531 04, or B3531 06 

At least one of the stepper motor control circuits is open or the voltage is low when the motor starts moving. Faults are not detected when motor is already running or target position is already reached.

scientia non olet · About LEMON Manuals