HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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">
STEP | CHECK | YES | NO |
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">
Removal
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Determining compatibility of tire and vehicle load capacities
The sum of four tires' maximum
load ratings must exceed the maximum
loaded vehicle weight
("GVWR"). In addition, sum of the
maximum load ratings of two front
tires and of two rear tires must
exceed each axle's maximum
loaded capacity ("GAWR"). Original
equipment tires are designed to
fulfil ...