DTC P0A45-16: Drive Motor "B" Position Sensor Circuit Voltage Below Threshold [12/2019 - 11/2023]: Procedure

1. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   Powertrain > Motor Generator > Trouble Codes 

   Result

   Result	Proceed to
   P0A45-16 or P0A45-1F* only is output, or DTCs except the ones in the table below are also output.	A
   DTCs of hybrid control system in the tables below are output.	B
   DTCs of motor generator control system in the tables below are output.	C

   *: P0A45-1F is output from the rear motor generator control system.

   TABLE 1
   
   

   Malfunction Content	System	Relevant DTC
   Insulation Malfunction	Hybrid control system	P1C7C-49	Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
   		P1C7D-49	Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure
   		P1C7E-49	Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure
   		P1C7F-49	Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure
   		P1C80-49	Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure

   TABLE 2
   
   

   Malfunction Content	System	Relevant DTC
   Microcomputer malfunction	Motor generator control system	P0A1C-47	Drive Motor "B" Control Module Watchdog / Safety MCU Failure
   		P0A1C-49	Drive Motor "B" Control Module Internal Electronic Failure
   		P1C2B-1C	Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range
   		P1C2B-49	Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure
   		P1C2C-1C	Drive Motor "B" Control Module AD Converter Circuit Voltage Out of Range
   		P1C2C-49	Drive Motor "B" Control Module AD Converter Internal Electronic Failure
   		P310B-83	Communication Error from Drive Motor "A" to Drive Motor "B" Value of Signal Protection Calculation Incorrect
   		P310B-86	Communication Error from Drive Motor "A" to Drive Motor "B" Signal (Some Circuit Quantity, Reported via Serial Data) Invalid
   		P310B-87	Communication Error from Drive Motor "A" to Drive Motor "B" Missing Message
   	Hybrid control system	P0A1B-49	Drive Motor "A" Control Module Internal Electronic Failure
   Power source circuit malfunction	Motor generator control system	P06B0-1C	Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
   		P06D6-1C	Generator Control Module Offset Power Circuit Voltage Out of Range
   		P262C-1C	Drive Motor "B" Control Module Offset Power Circuit Voltage Out of Range
   Communication malfunction	Motor generator control system	P3124-87	Lost Communication between Drive Motor "A" and HV ECU Missing Message

   HINT: 

   • P0A45-16 or P0A45-1F may be output as a result of the malfunctions 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.)
2. Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]

Result: 

C 

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM)  . Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]

Result: 

A 

See step  2

See step  3

Result

Result: 

B 

CONNECT SECURELY 

Result: 

C 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

A 

See step  3

Refer to Rear Motor Resolver Circuit [12/2019 - 11/2023]

HINT: 

If the "Rear Motor Resolver Circuit" inspection results are normal, perform the next step.

Result

Result: 

NEXT 

REPLACE INVERTER WITH CONVERTER ASSEMBLY 

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