HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B14E6 MODE DOOR ACTUATOR STEPPING MOTOR CIRCUIT SHORT-CIRCUIT
DTC detecting condition:
Mode door actuator stepping motor circuit is shorted.
Trouble symptom:
Vent does not change.
Wiring diagram:
Air conditioning system Air Conditioning System > WIRING DIAGRAM">
STEP | CHECK | YES | NO |
1.CHECK CONNECTOR.
1) Check the condition of connector connection.
2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">
Is B14E6 displayed?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14E6 MODE DOOR ACTUATOR STEPPING MOTOR CIRCUIT SHORT-CIRCUIT">Go to Step 2.
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.
2.CHECK POWER SUPPLY FOR MODE DOOR ACTUATOR.
1) Turn the ignition switch to OFF.
2) Disconnect the mode door actuator connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between the mode door actuator connector terminal and chassis ground.
Connector & terminal
(B77) No. 3 (+) — Chassis ground (–):
Is the voltage approx. 10 V or more?
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14E6 MODE DOOR ACTUATOR STEPPING MOTOR CIRCUIT SHORT-CIRCUIT">Go to Step 3.
Check the DC power supply circuit.
3.CHECK MODE DOOR ACTUATOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between mode door actuator terminals using a tester.
Connector & terminal
(B77) No. 3 — No. 1:
(B77) No. 3 — No. 2:
(B77) No. 3 — No. 5:
(B77) No. 3 — No. 6:
Is the resistance 80 — 100 ??
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14E6 MODE DOOR ACTUATOR STEPPING MOTOR CIRCUIT SHORT-CIRCUIT">Go to Step 4.
Replace the actuator. Mode Door Actuator > REMOVAL">
4.CHECK HARNESS BETWEEN A/C CONTROL PANEL AND MODE DOOR ACTUATOR (SHORTED TO POWER SUPPLY).
1) Disconnect the A/C control panel connector.
2) Turn the ignition switch to ON.
3) Measure the voltage between mode door actuator connector and chassis ground.
Connector & terminal
(B77) No. 1 (+) — Chassis ground (−):
(B77) No. 2 (+) — Chassis ground (−):
(B77) No. 5 (+) — Chassis ground (−):
(B77) No. 6 (+) — Chassis ground (−):
Is there any voltage?
Repair or replace the short circuit of the harness.
Replace the A/C control panel. Control Panel > REMOVAL">
Component
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > General DescriptionCOMPONENT1. TORQUE CONVERTER ASSEMBLY AND CONVERTER CASE(1)Drive plate(13)Pitching stopper bracketTightening torque: N·m (kgf-m, ft-lb)(2)Reinforcement drive plate(14)O-ringT1:18 (1.8, 13.3)(3)Torque converter ASSY(15)Stud bolt ...
Preparation tool
AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > General DescriptionPREPARATION TOOL1. SPECIAL TOOLILLUSTRATIONTOOL NUMBERDESCRIPTIONREMARKS — SUBARU SELECT MONITOR 4Used for setting of each function and troubleshooting for electrical system.NOTE:For detailed operation procedures of Subaru Se ...
Inspection
ENTERTAINMENT > Navigation SystemINSPECTION1. BASIC INSPECTION1. Using the Check List for Interview, ask the customer the condition of how the trouble occurred. Check List for Interview > CHECK">2. Check the battery. Battery > INSPECTION">3. Check the list of Diagnostics w ...