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B10A5 - Left Blend Door Control Circuit Open: Notes

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS information.

Theory of Operation 

The A/C heater control drives the left blend door actuator via the left blend door driver circuit and the common door driver 2 circuit.

Possible Causes
DRIVER BLEND DOOR DRIVER CIRCUIT C61 OPEN
COMMON DOOR DRIVER 2 CIRCUIT C807 OPEN
LEFT BLEND DOOR ACTUATOR
A/C HEATER CONTROL
NOTE:

DTC B1043 must be active for the results of this test to be valid. Do not perform this test if DTC B1043 is stored. Refer to HVAC system test (ATC) for stored DTC test procedures.