Subaru Legacy BN/BS (2015-2019) Service Manual: Diagnostic procedure with diagnostic trouble code (dtc)
Subaru Legacy BN/BS (2015-2019) Service Manual / Hvac system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc)
- Dtc u0002 can communication error
- Dtc b1430 in-vehicle (post evaporator) temperature sensor circuit open
- Dtc u0028 heater control panel communication error
- Dtc u0073 control module communication bus off
- Dtc b14b4 seat heater thermistor circuit short-circuit (driver)
- Dtc b14b3 seat heater thermistor circuit open (passenger)
- Dtc b14b2 seat heater thermistor circuit short-circuit (driver)
- Dtc b14b1 seat heater thermistor circuit open (driver)
- Dtc b14a8 compressor break-in malfunction low refrigerant
- Dtc b14a7 variable solenoid valve circuit
- Dtc b14a6 refrigerant flow sensor circuit short-circuit
- Dtc b14a5 refrigerant flow sensor circuit open
- Dtc b14a4 refrigerant pressure sensor circuit short-circuit
- Dtc b14a3 refrigerant pressure sensor circuit open
- Dtc b14a2 sunload sensor circuit short-circuit
- Dtc b14a1 sunload sensor circuit low/open
- Dtc b144a rear vent door actuator circuit stuck
- Dtc b1449 rear vent door actuator circuit short-circuit
- Dtc b1448 rear vent door actuator circuit open
- Dtc b1446 air mix door actuator circuit stuck (driver)
- Dtc b1443 mode door actuator circuit stuck
- Dtc b1442 air mix door actuator circuit short-circuit (driver)
- Dtc b1441 air mix door actuator circuit stuck (passenger)
- Dtc b1440 air mix door actuator circuit open (driver)
- Dtc b1439 mode door actuator circuit short-circuit
- Dtc b1438 mode door actuator circuit open
- Dtc b1437 air mix door actuator circuit short-circuit (passenger)
- Dtc b1436 air mix door actuator circuit open (passenger)
- Dtc b1435 evaporator temperature sensor circuit short-circuit
- Dtc b1434 evaporator temperature sensor circuit open
- Dtc b1433 ambient temperature sensor circuit short-circuit (air-conditioner)
- Dtc b1432 ambient temperature sensor circuit open (air-conditioner)
- Dtc b1431 in-vehicle (post evaporator) temperature sensor circuit short-circuit
Electrical specification
Terminal No.ContentMeasuring conditionStandardA1 ←> Chassis groundIgnition power supplyIgnition switch: ONBattery voltageA2CAN-H (CAN communication line)Measurement load (digital signal) — A3CA ...
Dtc u0002 can communication error
DTC DETECTING CONDITION:• Data to be received via CAN communication do not arrive.• A/C cooperation control does not operate.TROUBLE SYMPTOM:A/C does not operate fully automatically.STEPCH ...
Other materials:
Inspection
1. CHECK FUSE1. Remove the fuse and inspect visually.2. If the fuse is blown out, replace the fuse.NOTE:If the fuse is blown again, check the system wiring harness.2. CHECK RELAY1. Measure the resistance between blower motor relay terminals.Terminal No.Inspection conditionsStandardCircuit1 — 4Alwa ...
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