DTC P31D9-9F: AC Inverter Status Signal Stuck Off [12/2023 - ]: Procedure

Pre-procedure1

1. Enter the following menus:

   Powertrain > Plug-in Control > Trouble Codes 

   Procedure1

2. Check for DTCs.

   Result

   Result	Proceed to
   P31D9-9F only is output, or DTCs except the ones in the table below are also output	A
   DTCs of plug-in charge control system in the tables below are output	B

   Malfunction Content	System	Relevant DTC
   Microcomputer malfunction	Plug-in charge control system	P060B-49	Plug-in Control Module A/D Processing Internal Electronic Failure
   		P1CED-1C	Plug-in Control ECU Power Supply (Plus) Circuit Voltage Out of Range
   		P1CF0-1C	Plug-in Control ECU Power Supply (Minus) Circuit Voltage Out of Range
   		P1CF3-1C	Plug-in Control ECU Power Supply (Offset) Circuit Voltage Out of Range
   		P3194-14	Internal Control Module Circuit Short to Ground or Open
   Communication system malfunction		P0E5E-87	Plug-in Control Module Processor from Hybrid/EV Battery Charger Control Module Processor Missing Message
   		U1150-87	Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message
   Sensor and actuator circuit malfunction		P1CE6-11	AC Inverter Status Signal Circuit Short to Ground
   		P1CE6-15	AC Inverter Status Signal Circuit Short to Auxiliary Battery or Open

   HINT: 

   • P31D9-9F may be output as a result of the malfunction indicated by the DTCs above.
     1. The chart above is listed in inspection order of priority.
     2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

   Post-procedure1

3. None

Result: 

B 

GO TO DTC CHART (PLUG-IN CHARGE CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

Result: 

A 

See step  2

Refer to PROCEDURE - Step 2

Result

Result: 

OK 

REPLACE VOLTAGE INVERTER. Refer to  REMOVAL [12/2023 - ] 

Result: 

NG 

See step  3

Refer to PROCEDURE - Step 5

Result

Result: 

OK 

REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR