Subaru Crosstrek Service Manual: Dtc b14a2 sunload sensor circuit short-circuit

DTC detecting condition:

Sunload sensor circuit is shorted.

Trouble symptom:

Operation is performed as no sunload.

Wiring diagram:

Air conditioning system Air Conditioning System > WIRING DIAGRAM">

1.CHECK CONNECTOR.

1) Check the condition of connector connection.

2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is B14A2 displayed?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A2 SUNLOAD SENSOR 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 SUNLOAD SENSOR.

1) Disconnect the sunload sensor.

2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">

Is B14A1 displayed?

Replace the sunload sensor. Sunload Sensor (Auto A/C Model) > REMOVAL">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A2 SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT">Go to Step 3.

3.CHECK HARNESS.

1) Turn the ignition switch to ON.

2) Using the tester, measure the voltage between terminals.

Connector & terminal

(i51) No. 2 (+) — No. 1 (−):

Is the voltage 4.5 — 5.0 V?

Check the connection of the sunload sensor circuit.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A2 SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT">Go to Step 4.

4.CHECK HARNESS (SHORTED BETWEEN LINES).

1) Disconnect the connector from the A/C control panel.

2) Using a tester, check continuity between terminals.

Connector & terminal

(i51) No. 1 — No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the A/C control panel. Control Panel > REMOVAL">

Dtc b14a1 sunload sensor circuit low/open

Dtc b14e1 air mix door actuator stepping motor circuit open (driver)

Other materials:

Component
CONTROL SYSTEMS > General DescriptionCOMPONENT1. AT SELECT LEVER(1)Grip sub ASSY (model with gate shifter)(14)Spacer pin guide(27)Nut(2)Clamp grip pin(15)Plate COMPL(28)Button ASSY-AT(3)Cover grip AT (model with gate shifter)(16)Shaft control(29)Housing(4)Rod COMPL(17)Spacer pin guide(30)Blind A ...

Installation
LIGHTING SYSTEM > Headlight AssemblyINSTALLATIONCAUTION:Install so that the front end of the under cover (b) comes inside the bumper face - front (a), and the front end of the mud guard (c) comes outside the bumper face - front (a).1. Install each part in the reverse order of removal.Tightening t ...

Safety precautions
WARNING If you are using an implanted pacemaker or defibrillator, maintain a safe distance of at least 8.7 in (22 cm) from the transmitting antennas installed in the Subaru Ascent. The Subaru Ascent keyless access system emits radio waves that may interfere with the normal operation o ...