HYBRID BATTERY SYSTEM, Diagnostic DTC:P1A90-123, P1A91-123, P1A92-123, P1A93-123

DTC Code	DTC Name
P1A90-123	Delta SOC High Stack "D"
P1A91-123	Delta SOC Very High Stack "D"
P1A92-123	Hybrid Battery Low Voltage during IG-OFF Stack "D"
P1A93-123	Hybrid Battery Low Voltage during Battery Charge Stack "D"

DESCRIPTION

Refer to the Description for DTC P1A40-123 Click here.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P1A90	123	Difference between each HV battery block capacity exceeds the specified value (2 trip detection).	No. 4 hybrid vehicle supply stack sub-assembly Battery smart unit
P1A91		Difference between each HV battery block capacity exceeds the specified value (1 trip detection).
P1A92		Difference between each battery block capacity when the power switch is on (IG) exceeds the specified value (2 trip detection).
P1A93		The HV battery block voltage during plug-in charging is lower than the specified value (1 trip detection).

Tech Tips

DTC will not be set unless the vehicle is driven for approximately 10 minutes after clearing the DTC.

WIRING DIAGRAM

INSPECTION PROCEDURE

CAUTION:

Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly or electric vehicle charger assembly, turn the power switch off. Also, 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.
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.

Tech Tips

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly and electric vehicle charger assembly.
When disposing of HV batteries and hybrid vehicle supply stack sub-assemblies, make sure to return them through an authorized collection agent who is capable of handling them safely. If they are returned via the manufacturer specified route, they will be returned properly and in a safe manner by an authorized collection agent.
Before returning the HV battery, make sure to perform recovery inspection Click here.
Before returning the hybrid vehicle supply stack sub-assembly, make sure to perform recovery inspection Click here.
Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery and hybrid vehicle supply stack sub-assemblies.

Note

After turning the power 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 Click here.

PROCEDURE

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Read output DTCs.

Result

Result	Proceed to
P31AB-123, P1A61-123 ,P1A64-123, P1A67-123 is not output	A
P31AB-123, P1A61-123 ,P1A64-123, P1A67-12 is output	B

Disconnect the GTS from the DLC3.
Turn the power switch off.

GO TO DTC CHART (HYBRID BATTERY SYSTEM) Click here

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Read output DTCs Click here.

Result

Result	Proceed to
P0AFC-123 is not output.	A
P0AFC-123 is also output.	B

Disconnect the GTS from the DLC3.

GO TO DTC CHART (P0AFC-123) Click here

CHECK HV BATTERY (BATTERY CELL VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

2012/05 - 2013/12:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Battery Block 6)

Tester Connection	Condition	Specified Condition
v1-13 (GA3) - v1-9 (VA43)	Power switch off	3.0 V or more
v1-9 (VA43) - v1-5 (VA44)	Power switch off	3.0 V or more
v1-5 (VA44) - v1-1 (VA45)	Power switch off	3.0 V or more
v1-1 (VA45) - v1-14 (VA46)	Power switch off	3.0 V or more
v1-14 (VA46) - v1- 10 (VA47)	Power switch off	3.0 V or more
v1-10 (VA47) - v1-6 (VA48)	Power switch off	3.0 V or more
v1-6 (VA48) - v1-2 (VA49)	Power switch off	3.0 V or more

Result

Result	Proceed to
The difference between the highest and lowest value is less than 0.2 V and every measured value is 3.0 V or more.	A
Other than above.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

2013/12 -:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Battery Block 6)

Tester Connection	Condition	Specified Condition
v2-13 (GA3) - v2-9 (VA43)	Power switch off	3.0 V or more
v2-9 (VA43) - v2-5 (VA44)	Power switch off	3.0 V or more
v2-5 (VA44) - v2-1 (VA45)	Power switch off	3.0 V or more
v2-1 (VA45) - v2-14 (VA46)	Power switch off	3.0 V or more
v2-14 (VA46) - v2- 10 (VA47)	Power switch off	3.0 V or more
v2-10 (VA47) - v2-6 (VA48)	Power switch off	3.0 V or more
v2-6 (VA48) - v2-2 (VA49)	Power switch off	3.0 V or more

Result

Result	Proceed to
The difference between the highest and lowest value is less than 0.2 V and every measured value is 3.0 V or more.	A
Other than above.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

REPLACE NO. 4 HYBRID VEHICLE SUPPLY STACK SUB-ASSEMBLY Click here

CHECK HV BATTERY (BATTERY CELL VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

2012/05 - 2013/12:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Battery Block 7)

Tester Connection	Condition	Specified Condition
v1-2 (VA49) - v1-15 (VA50)	Power switch off	3.0 V or more
v1-15 (VA50) - v1- 11 (VA51)	Power switch off	3.0 V or more
v1-11 (VA51) - v1-7 (VA52)	Power switch off	3.0 V or more
v1-7 (VA52) - v1-16 (VA53)	Power switch off	3.0 V or more
v1-16 (VA53) - v1- 12 (VA54)	Power switch off	3.0 V or more
v1-12 (VA54) - v1-8 (VA55)	Power switch off	3.0 V or more
v1-8 (VA55) - v1-4 (VA56)	Power switch off	3.0 V or more

Result

Result	Proceed to
The difference between the highest and lowest value is less than 0.2 V and every measured value is 3.0 V or more.	A
Other than above.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

2013/12 -:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Battery Block 7)

Tester Connection	Condition	Specified Condition
v2-2 (VA49) - v2-15 (VA50)	Power switch off	3.0 V or more
v2-15 (VA50) - v2- 11 (VA51)	Power switch off	3.0 V or more
v2-11 (VA51) - v2-7 (VA52)	Power switch off	3.0 V or more
v2-7 (VA52) - v2-16 (VA53)	Power switch off	3.0 V or more
v2-16 (VA53) - v2- 12 (VA54)	Power switch off	3.0 V or more
v2-12 (VA54) - v2-8 (VA55)	Power switch off	3.0 V or more
v2-8 (VA55) - v2-4 (VA56)	Power switch off	3.0 V or more

Result

Result	Proceed to
The difference between the highest and lowest value is less than 0.2 V and every measured value is 3.0 V or more.	A
Other than above.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

REPLACE NO. 4 HYBRID VEHICLE SUPPLY STACK SUB-ASSEMBLY Click here

CHECK HV BATTERY (BATTERY CELL VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

2012/05 - 2013/12:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Between Battery Block)

Tester Connection	Condition
v1-13 (GA3) - v1-2 (VA49)	Power switch off
v1-2 (VA49) - v1-4 (VA56)	Power switch off

Result

Result	Proceed to
The difference between the value measured between v1-13 (GA3) and v1-2 (VA49)) and the value measured between v1-2 (VA49) and v1-4 (VA56) is less than 0.58 V.	A
The difference between the value measured between v1-13 (GA3) and v1-2 (VA49) and the value measured between v1-2 (VA49) and v1-4 (VA56) is 0.58 V or more.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

2013/12 -:

Check that the service plug grip is not installed.

Note

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
Remove the No. 1 hybrid vehicle battery shield panel Click here.

Text in Illustration
*a	Rear view of wire harness connector (to Battery Smart Unit)

Measure the voltage according to the value(s) in the table below.

Standard Voltage (Between Battery Block)

Tester Connection	Condition
v2-13 (GA3) - v2-2 (VA49)	Power switch off
v2-2 (VA49) - v2-4 (VA56)	Power switch off

Result

Result	Proceed to
The difference between the value measured between v2-13 (GA3) and v2-2 (VA49)) and the value measured between v2-2 (VA49) and v2-4 (VA56) is less than 0.58 V.	A
The difference between the value measured between v2-13 (GA3) and v2-2 (VA49) and the value measured between v2-2 (VA49) and v2-4 (VA56) is 0.58 V or more.	B

Note

Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

Install the No. 1 hybrid vehicle battery shield panel.

REPLACE NO. 4 HYBRID VEHICLE SUPPLY STACK SUB-ASSEMBLY Click here

REPLACE BATTERY SMART UNIT Click here