RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0598792 AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE)) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE))  B14721C  A/C Inverter High Voltage Output Circuit Voltage Out of Range  


DESCRIPTION

The inverter in the compressor with motor assembly outputs high voltage to operate the motor. If there is an open or short in the output circuit, the hybrid vehicle control ECU will stop compressor operation and store this DTC. This DTC will be stored as a history DTC. The compressor operation remains stopped until both the history and current DTCs are cleared.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B14721C A/C Inverter High Voltage Output Circuit Voltage Out of Range Diagnosis Condition:

There is a compressor operation request.


Malfunction:

Open or short in A/C inverter high voltage output circuit


Detection Time:

-


Compressor with motor assembly Memorized

DTC Detection Condition Combination Table
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition There is a compressor operation request. ○ ○
Malfunction Open in A/C inverter high voltage output circuit ○ -
Short in A/C inverter high voltage output circuit - ○
Detection Time - -
Trip Count 1 trip 1 trip

HINT:

If the conditions of either of these patterns are detected, a DTC will be stored.


CAUTION / NOTICE / HINT

CAUTION:
·

Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION

·

Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>PRECAUTION



NOTICE:
·

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

-

Before disconnecting battery:

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

-

Automatic learning chart:

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART


·

The hybrid control system and air conditioning system output DTCs separately. Perform troubleshooting for the hybrid control system first if DTCs for both systems are output simultaneously.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>PA10 HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY)>HOW TO PROCEED WITH TROUBLESHOOTING

·

The air conditioning system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the air conditioning system after confirming that the communication systems are functioning properly.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HV Model)>HOW TO PROCEED WITH TROUBLESHOOTING



PROCEDURE

1.REPLACE COMPRESSOR WITH MOTOR ASSEMBLY
a.

Replace the compressor with motor assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR (for 8ZR-FXE)>REMOVAL

NOTICE:

If this DTC is output even once, replace the compressor with motor assembly as an internal malfunction has occurred.



Result:
Proceed to
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