DTC B1422-00: A/C Inverter Load Malfunction [11/2023 - ]: Procedure

1. Perform the Active Test according to the display on the GTS.

   Powertrain > Engine > Active Test 

   Tester Display	Measurement Item	Control Range	Restrict Condition
   Control the Engine Cooling Fan Duty Ratio	Control the cooling fan	0 to 100%	Perform this test when vehicle is stopped.

   Powertrain > Engine > Active Test 

   Tester Display
   Control the Engine Cooling Fan Duty Ratio

   OK

   Electric cooling fan operates smoothly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO COOLING FAN SYSTEM. Refer to  ON-VEHICLE INSPECTION [12/2019 - ] 

Result: 

OK 

See step  2

Pre-procedure1

1. Install a manifold gauge set.

   HINT: 

   Refer to ON-VEHICLE INSPECTION [12/2019 - ]

2. Prepare the vehicle according to the table below.

   Measurement Condition

   Item	Condition
   Doors	Fully open
   A/C Switch	On
   Recirculation/fresh Control Switch	Recirculation
   Set Temperature	MAX COLD
   Blower Speed	HI
   Air Conditioning Air Inlet Temperature	25 to 35°C (77 to 95°F)

   Procedure1

3. Read the manifold gauge pressure.

   Standard Pressure

   Item	Specified Condition
   High pressure side	1370 to 1570 kPa 14 to 16 kgf/cm2 199 to 228 psi
   Low pressure side	150 to 250 kPa 1.5 to 2.5 kgf/cm2 22 to 36 psi

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

CHARGE REFRIGERANT. Refer to  REPLACEMENT [12/2019 - ]