DTC B1474: A/C Inverter Temperature

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

When the A/C inverter temperature is abnormal.

Trouble symptom:

Compressor does not operate.

CAUTION:

Inspect LAN system before performing diagnosis, and make sure that there is no fault in LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .
Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to AIR CONDITIONERS (DIAGNOSTICS) (HEV)>GENERAL DESCRIPTION>CAUTION .

ACTIVE TEST .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor, check the following items in the [Active Test] of [Engine]. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>ACTIVE TEST .
  - Radiator Fan Relay
Does the radiator fan operate with [Radiator Fan Relay] set to ON?

Yes : Go to 2.

No : Ref. to COOLING (H4DO (HEV))>RADIATOR FAN SYSTEM .
CHECK AMOUNT OF REFRIGERANT .
Check the refrigerant pressure and filling amount. Ref. to AIR CONDITIONER (HEV)>REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET .

Is the filling amount of refrigerant OK?

Yes : Go to 3.

No : Fill or collect refrigerant so that specified filling amount of refrigerant is obtained.
CHECK DTC .
Read the DTC of [Air Conditioner] using the Subaru Select Monitor. HE1 Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is DTC B1474 displayed?

Yes : Replace Electric compressor ASSEMBLY. Ref. to AIR CONDITIONER (HEV)>COMPRESSOR .

No : Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DIAGNOSTICS WITH PHENOMENON .