DTC B1471: A/C Inverter High Voltage Power Resource System [12/2019 - 11/2023]: Procedure

1. Using the GTS, check if the CAN communication system is functioning normally.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023]

   Result

   Result	Proceed to
   CAN communication system DTCs are not output	A
   CAN communication system DTCs are output	B

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] 

Result: 

A 

See step  2

1. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   OK

   Hybrid control system DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO HYBRID CONTROL SYSTEM 

for 2WD: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

for AWD: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

Result: 

OK 

See step  3

1. Remove the HV air conditioning wire.

   Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   m1-2 (PB) - m2-1 (ACPB)	Always	Below 1 Ω
   m1-1 (PE) - m2-2 (ACPE)	Always	Below 1 Ω
   m1-2 (PB) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

REPLACE HV AIR CONDITIONING WIRE. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]