HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE)) B14711C A/C Inverter High Voltage Power Resource Circuit Voltage Out of Range
DESCRIPTION
The hybrid vehicle control ECU monitors the voltage of the HV battery. The hybrid vehicle control ECU stops compressor control and stores this DTC when the monitored voltage is outside the specified range.
This DTC will be stored as a history DTC. Compressor control may not resume unless the ignition switch is turned off.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| B14711C | A/C Inverter High Voltage Power Resource Circuit Voltage Out of Range | Diagnosis Condition:
Ignition switch ON Malfunction: ·
Open or short in A/C inverter high voltage power resource system ·
Damage or malfunction in voltage booster system Detection Time: - |
·
Hybrid control system ·
HV air conditioning wire ·
Compressor with motor assembly |
Memorized |
| Vehicle Condition | ||||
|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | ||
| Diagnosis Condition | Ignition switch ON | ○ | ○ | ○ |
| Malfunction | Open in A/C inverter high voltage power resource system | ○ | - | - |
| Short in A/C inverter high voltage power resource system | - | ○ | - | |
| Voltage booster system damage or malfunction | - | - | ○ | |
| Detection Time | - | - | - | |
| Trip Count | 1 trip | 1 trip | 1 trip | |
- HINT:
-
If the conditions of either of these patterns are detected, a DTC will be stored.
WIRING DIAGRAM
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.
·Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed.
- 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.
--Automatic learning chart:
·Inspect the fuses for circuits related to this system before performing the following procedure.
·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.
·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.
PROCEDURE
Check for DTCs.
- Powertrain > Hybrid Control > Trouble Codes
- 50001 397
- Result:
Result Proceed to Hybrid control system DTCs are not output. A Hybrid control system DTCs are output. B
A
B
- CAUTION:
-
Be sure to wear insulated gloves.
Disconnect the X1 compressor with motor assembly connector.
Remove the HV air conditioning wire from the inverter with converter assembly.
- NOTICE:
-
Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition X1-2 (PB) - X3-1 (ACPB) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
- CAUTION:
-
Be sure to wear insulated gloves.
Disconnect the X1 compressor with motor assembly connector.
Remove the HV air conditioning wire from the inverter with converter assembly.
- NOTICE:
-
Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition X1-1 (PE) - X3-2 (ACPE) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
- CAUTION:
-
Be sure to wear insulated gloves.
Disconnect the X1 compressor with motor assembly connector.
Remove the HV air conditioning wire from the inverter with converter assembly.
- NOTICE:
-
Make sure that no foreign matter, water, etc., enters the inverter with converter assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition X1-2 (PB) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG