DTC P1CFF-62: Hybrid/EV Battery Current/DC/DC Converter Current Signal Compare Failure [10/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Powertrain / Hybrid Control and Motor Generator / Trouble Codes.
4. Check for DTCs.

   Powertrain > Hybrid Control > Trouble Codes 

   Powertrain > Motor Generator > Trouble Codes 

   Result

   Result	Proceed to
   P1CFF62 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

   TABLE 1
   
   

   Malfunction Content	System	Relevant DTC
   Insulation Malfunction	Hybrid control system	P1C7C49	Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
   		P1C7D49	Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure
   		P1C7E49	Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure
   		P1C7F49	Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure
   HV Battery Malfunction	Hybrid control system	P0ABF00	Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance
   		P0ABF11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground
   		P0ABF15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open
   		P0ABF28	Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure
   		P0ABF2A	Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range
   		P1C9F11	Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Ground
   		P1C9F15	Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Auxiliary Battery or Open
   		P1C9F1C	Hybrid/EV Battery Current Sensor for Driving Control Voltage Out of Range
   		P1CBB12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery
   		P1CBB14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open

   TABLE 2
   
   

   Malfunction Content	System	Relevant DTC
   Microcomputer malfunction	Motor generator control system	P0A1A47	Generator Control Module Watchdog / Safety μC Failure
   		P0A1A49	Generator Control Module Internal Electronic Failure
   		P0A1B1F	Generator Control Module Circuit Intermittent
   		P1C2A1C	Generator A/D Converter Circuit Circuit Voltage Out of Range
   		P1C2A49	Generator A/D Converter Circuit Internal Electronic Failure
   		P1C2B1C	Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range
   		P1C2B49	Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure
   		P313383	Communication Error from Generator to Drive Motor "A" Value of Signal Protection Calculation Incorrect
   		P313386	Communication Error from Generator to Drive Motor "A" Signal Invalid
   		P313387	Communication Error from Generator to Drive Motor "A" Missing Message
   		P313483	Communication Error from Drive Motor "A" to Generator Value of Signal Protection Calculation Incorrect
   		P313486	Communication Error from Drive Motor "A" to Generator Signal Invalid
   		P313487	Communication Error from Drive Motor "A" to Generator Missing Message
   	Hybrid control system	P0A1B49	Drive Motor "A" Control Module Internal Electronic Failure
   Power source circuit malfunction	Motor generator control system	P06B01C	Generator Control Module Position Sensor REF Power Source Circuit Voltage Out of Range
   		P06D61C	Generator Control Module Offset Power Circuit Voltage Out of Range
   Communication malfunction	Motor generator control system	P312487	Lost Communication between Drive Motor "A" and HV ECU Missing Message
   	Hybrid control system	P312387	Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message
   Sensor and actuator circuit malfunction	Motor generator control system	P0E5111	DC/DC Converter Current Sensor Circuit Short to Ground
   		P0E5115	DC/DC Converter Current Sensor Circuit Short to Battery or Open
   		P0E5128	DC/DC Converter Current Sensor Signal Bias Level Out of Range / Zero Adjustment Failure

   HINT: 

   • P1CFF62 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.)
5. Turn the power switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2018 - ] 

Result: 

C 

GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2018 - ] 

Result: 

A 

See step  2

1. Ensure the safety of the areas in front and at the back of the vehicle.
2. Apply the parking brake and secure the wheels using chocks.

   HINT: 

   When the parking brake indicator (red) is illuminated after the electric parking brake switch has been pushed to the lock side, the maximum amount of braking force is applied if the electric parking brake switch is pushed to the lock side one more time.

3. Connect the Techstream to the DLC3.
4. Turn the power switch on (READY).
5. Depress the brake pedal firmly with your left foot.
6. Move the shift lever to D.
7. Enter the following menus: Powertrain / Motor Generator / Data List / Hybrid/EV Battery System Current, Inverter Input Current, WIN Control Limit Power.

   HINT: 

   Perform this procedure while making sure that the absolute value of the Data List item WIN Control Limit Power remains higher than 20 kW.

8. Depress the brake pedal firmly with your left foot and fully depress the accelerator pedal for 5 seconds, and then release it.
   WARNING:

   Make sure to fully apply the parking brake and firmly depress the brake pedal to prevent the vehicle from moving.

9. According to the display on the Techstream, read the Data List and monitor the values of "Hybrid/EV Battery System Current" and "Inverter Input Current".

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Change in Hybrid/EV Battery System Current and Inverter Input Current When Normal	*2	Hybrid/EV Battery System Current
   *3	Inverter Input Current	*4	Accelerator pedal depressed
   *5	Current [A]	*6	Time [Seconds]

   Result

   Result	Proceed to
   OK	A
   NG (Inverter Input Current Did Not Change)	B
   NG (Hybrid/EV Battery System Current Did Not Change)	C

10. Turn the power switch off.

Result: 

B 

REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  Refer to  REMOVAL [07/2022 - ] 

Result: 

C 

GO TO DTC CHART (P0ABF00). Refer to  DTC P0ABF-00: Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance [10/2018 - ] 

Result: 

A 

See step  3

Refer to PROCEDURE - Step 3

Result

Result: 

A 

REPLACE INVERTER WITH CONVERTER ASSEMBLY. Refer to  REMOVAL [10/2018 - 07/2022]  Refer to  REMOVAL [07/2022 - ] 

Result: 

B 

CONNECT SECURELY 

Result: 

C 

REPAIR OR REPLACE HARNESS OR CONNECTOR