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:

Dtc p0971 pressure control solenoid "c" control circuit high
CONTINUOUSLY VARIABLE TRANSMISSION (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0971 PRESSURE CONTROL SOLENOID "C" CONTROL CIRCUIT HIGHDTC detecting condition:Immediately at fault recognitionTrouble symptom:• Tight corner braking phenomenon occurs.&b ...

Installation
REAR SUSPENSION > Rear Trailing LinkINSTALLATIONCAUTION:• Be sure to use a new self-locking nut.• Always tighten the bushing in the state where the vehicle is at curb weight and the wheels are in full contact with the ground.1. Install each part in the reverse order of removal.Tighten ...

Windows
WARNING To avoid serious personal injury caused by entrapment, always conform to the following instructions without exception. When operating the power windows, be extremely careful to prevent anyone's fingers, arms, neck, head or other objects from being caught in the window. Alwa ...