DTC B1473: A/C Inverter Start-up Signal System [04/2020 - 09/2022]: Procedure
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the power switch on (READY).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
- Check if air conditioning system DTCs are output.
Body Electrical > Air Conditioner > Trouble Codes
Result
Result Proceed to Only B1473 is output A B1473 and B1498 are output simultaneously B
Result:
B
GO TO DTC B1498. Refer to DTC B1498: Communication Malfunction (A/C Inverter Local) [01/2019 - 09/2022]
Result:
A
See step 2
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
- Check if hybrid control system DTCs are output.
Powertrain > Hybrid Control > Trouble Codes
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
B
GO TO HYBRID CONTROL SYSTEM
for NICKEL METAL HYDRIDE BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
for LITHIUM-ION BATTERY: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2020 - 09/2022]
Result:
A
See step 3
- PERFORM ACTIVE TEST USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Air Conditioner / Active Test.
- Perform the Active Test according to the display on the Techstream.
Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note Compressor Target Speed Compressor with motor assembly Min.: 0
Max.: 7500- Body Electrical > Air Conditioner > Active Test
Tester Display Compressor Target Speed OK
Compressor with motor assembly operates normally.
Result
Proceed to OK NG
Result:
OK
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [01/2019 - 09/2022]
Result:
NG
REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to REMOVAL [04/2020 - 09/2022]