Subaru Crosstrek Service Manual: Dtc b1433 ambient temperature sensor circuit short-circuit (air-conditioner)

DTC detecting condition:

Ambient sensor circuit is shorted.

Trouble symptom:

Ambient temperature is falsely recognized, and the compartment temperature is adjusted.

Wiring diagram:

Air conditioning system Air Conditioning System > WIRING DIAGRAM">

1.CHECK CONNECTOR.

1) Check the connecting conditions of combination meter connector and ambient sensor connector.

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

Is B1433 displayed?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)">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 AMBIENT SENSOR.

1) Disconnect the ambient sensor. Ambient Sensor > REMOVAL">

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

Is B1432 displayed?

Replace the ambient sensor. Ambient Sensor > REMOVAL">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)">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

(F78) No. 1 (+) — No. 2 (−):

Is the voltage 4.5 — 5.0 V?

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.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)">Go to Step 4.

4.CHECK HARNESS (SHORTED BETWEEN LINES).

1) Disconnect the connector from the combination meter.

2) Using a tester, check continuity between terminals.

Connector & terminal

(F78) No. 1 — No. 2:

Is there continuity?

Repair or replace the short circuit of the harness.

Replace the combination meter. Combination Meter > REMOVAL">

Dtc b1432 ambient temperature sensor circuit open (air-conditioner)

Dtc b1434 evaporator temperature sensor circuit open

Other materials:

Center console
The center console box provides a storage space. Paper holder Pen holder Card holder The top of the console can be used as an armrest. For some models, the armrest is adjustable. Slide the armrest to the desired position. ...

Dtc u0073 control module communication bus off
LAN SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0073 CONTROL MODULE COMMUNICATION BUS OFFDTC DETECTING CONDITION:Integrated unit communication is shut down because of high speed CAN error.TROUBLE SYMPTOM:CAN communication is not normal.STEPCHECKYESNO1.CHECK ...

Dtc b2903 vdc data error
AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2903 VDC DATA ERRORDTC DETECTING CONDITION:Detected when data (vehicle speed signal) from VDC CM is abnormal.TROUBLE SYMPTOM:The auto headlight beam leveler does not operate.NOTE:Perform ...