DTC B14EA: Intake Door Actuator Circuit Short-Circuit

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

DTC detecting condition:

Intake door actuator potentiometer circuit is shorted.

Trouble symptom:

FRESH/RECIRC does not operate.

Wiring diagram:

Air conditioning system Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>AIR CONDITIONING SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to AIR CONDITIONERS DIAGNOSTICS) (HEV)>GENERAL DESCRIPTION>CAUTION .

CHECK CONNECTOR .
1. Check connecting condition of the A/C control panel and intake door actuator connector.
2. Turn the ignition switch to ON.
3. Read the DTC of [Air Conditioner] using the Subaru Select Monitor. Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC B14EA displayed?

Yes : Go to 2.

No : Even if DTC is displayed, the circuit has returned to a normal condition at this time.

Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
CHECK ACTUATOR .
Measure the voltage between intake door actuator connector terminals using a tester.

Connector & terminal

(i186) No. 3 (+) - (i186) No. 1 (-):

Is the voltage 4.5 - 5.5 V?

Yes : Go to 3.

No : Repair or replace the open circuit of harness.
CHECK HARNESS (OPEN CIRCUIT) .
1. Turn the ignition switch to OFF.
2. Check the continuity between terminals in intake door actuator connector using a tester.
  Connector & terminal
  
  (i186) No. 3 - (i181) No. 7:
  
  (i186) No. 1 - (i181) No. 19:
  
  (i186) No. 2 - (i80) No. 12:
Is there continuity?

Yes : Go to 4.

No : Repair or replace the open circuit of harness.
CHECK ACTUATOR .
1. Turn the ignition switch to ON.
2. Measure the voltage between intake door actuator connector terminals using a tester.
  Connector & terminal
  
  (i186) No. 2 (+) - (i186) No. 1 (-):
Is the voltage 0.5 - 4.5 V?

Yes : Replace the A/C control panel. Ref. to AIR CONDITIONER (HEV)>CONTROL PANEL .

No : Go to 5.
CHECK HARNESS (SHORTED BETWEEN LINES) .
1. Turn the ignition switch to OFF.
2. Measure the resistance between intake door actuator connector terminals using a tester.
  Connector & terminal
  
  (i186) No. 2 - (i186) No. 1:
Is the resistance less than 1Ω?

Yes : Repair or replace the short circuit of the harness.

No : Replace the intake door actuator. Ref. to AIR CONDITIONER (HEV)>FRESH/RECIRC DOOR ACTUATOR .