DTC P0A7A-122: Generator Inverter Performance [10/2014 - 10/2015]: Procedure

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

   Result

   Result	Proceed to
   P0A7A-122 is stored before any of the DTCs in the tables below are stored.	A
   Any of the DTCs including pending DTCs in table 1 below are stored before P0A7A-122 is stored.	B
   Any of the DTCs in table 2 below are stored before P0A7A-122 is stored.	C

   TABLE 1
   
   

   DTC No.	Relevant Diagnosis
   P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
   P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
   P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
   P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
   P3004-803	High Voltage Power Resource

   TABLE 2
   
   

   DTC No.	Relevant Diagnosis
   P3011-123, P3012-123, P3013-123, P0314-123, P3015-123, P3016-123, P3017-123, P3018-123, P3019-123, P3020-123, P3021-123, P3022-123, P3023-123, P3024-123, P3025-123, P3026-123, P3027-123	Battery Block # Becomes Weak
   P0A9C-123	Hybrid Battery Temperature Sensor "A" Range / Performance
   P0A9D-123	Hybrid Battery Temperature Sensor "A" Circuit Low
   P0A9E-123	Hybrid Battery Temperature Sensor "A" Circuit High
   P0AC0-123	Hybrid Battery Pack Current Sensor Circuit Range/Performance
   P0AC1-123	Hybrid Battery Pack Current Sensor Circuit Low
   P0AC2-123	Hybrid Battery Pack Current Sensor Circuit High
   P0AC6-123	Hybrid Battery Temperature Sensor "B" Range/Performance
   P0AC7-123	Hybrid Battery Temperature Sensor "B" Circuit Low
   P0AC8-123	Hybrid Battery Temperature Sensor "B" Circuit High
   P0ACB-123	Hybrid Battery Temperature Sensor "C" Range / Performance
   P0ACC-123	Hybrid Battery Temperature Sensor "C" Circuit Low
   P0ACD-123	Hybrid Battery Temperature Sensor "C" Circuit High
   P0AFC-123	Hybrid Battery Pack Sensor Module
   P3065-123	Hybrid Battery Temperature Sensor Range/Performance Stuck "A"
   P308A-123	Hybrid Battery Voltage Sensor All Circuits Low

   HINT: 

   • Refer to the freeze frame data to determine the order in which the DTCs were stored.
   • P0A7A-122 may be stored due to a malfunction which also causes DTCs in the preceding tables to be stored. In this case, first troubleshoot the output DTCs in the preceding tables. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.
5. Turn the power switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

Result: 

C 

GO TO DTC CHART (HYBRID BATTERY SYSTEM) 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

Result: 

A 

See step  2

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

   Result

   Result	Proceed to
   P0A7A-203 is not output.	A
   P0A7A-203 is also output.	B

   NOTE:

   • If P0A7A-203 is output, troubleshoot it first. After completing the troubleshooting for P0A7A-203, perform troubleshooting for this DTC.
   • Parts repaired or replaced during troubleshooting for P0A7A-203 do not need to be re-inspected in this diagnosis procedure.
5. Turn the power switch off.

Result: 

B 

GO TO DTC CHART (P0A7A-203) 

(Refer to DTC P0A7A-203: Generator Inverter Performance [10/2014 - 10/2015] )

Result: 

A 

See step  3

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

   HINT: 

   • If P0A7A-203 was not output in step 2 of this diagnosis procedure, check Table 1 below.
   • If P0A7A-203 was output in step 2 of this diagnosis procedure, diagnose that DTC first, then check Table 2 below.

   Result

   Result	Proceed to
   P0A7A-122 only is output, or DTCs except the ones in the tables below are also output.	A
   Any of the following DTCs including pending DTCs are also output.	B

   TABLE 1
   
   

   DTC No.	Relevant Diagnosis
   P0A1A (all INF codes)*1	Generator Control Module
   P0A1B (all INF codes)*1	Drive Motor "A" Control Module
   P0A1D (all INF codes)*1	Hybrid Powertrain Control Module
   P0A3F-243	Drive Motor "A" Position Sensor Circuit
   P0A40-500	Drive Motor "A" Position Sensor Circuit Range/Performance
   P0A41-245	Drive Motor "A" Position Sensor Circuit Low
   P0A4B-253	Generator Position Sensor Circuit
   P0A4C-513	Generator Position Sensor Circuit Range/Performance
   P0A4D-255	Generator Position Sensor Circuit Low
   P0A60 (all INF codes)*1	Drive Motor "A" Phase V Current
   P0A63 (all INF codes)*1	Drive Motor "A" Phase W Current
   P0A72 (all INF codes)*1	Generator Phase V Current
   P0A75 (all INF codes)*1	Generator Phase W Current
   P0A78-266, 267, 279, 287, 306, 503, 504, 505, 506, 586, 806, 807, 808	Drive Motor "A" Inverter Performance
   P0A7A-325, 344, 517, 518, 809, 810, 811	Generator Inverter Performance
   P0A90-509	Drive Motor "A" Performance
   P0A92-521	Hybrid Generator Performance
   P0A94-442, 547, 548, 549, 554, 555, 556, 585, 587, 589, 590	DC/DC Converter Performance
   P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
   P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
   P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
   P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
   P0C76-523	Hybrid Battery System Discharge Time Too Long
   P3004-803	High Voltage Power Resource

   TABLE 2
   
   

   DTC No.	Relevant Diagnosis
   P0A1A (all INF codes)*1	Generator Control Module
   P0A1B (all INF codes)*1	Drive Motor "A" Control Module
   P0A1D (all INF codes)*1	Hybrid Powertrain Control Module
   P0A3F-243	Drive Motor "A" Position Sensor Circuit
   P0A40-500	Drive Motor "A" Position Sensor Circuit Range/Performance
   P0A41-245	Drive Motor "A" Position Sensor Circuit Low
   P0A4B-253	Generator Position Sensor Circuit
   P0A4C-513	Generator Position Sensor Circuit Range/Performance
   P0A4D-255	Generator Position Sensor Circuit Low
   P0A60 (all INF codes)*1	Drive Motor "A" Phase V Current
   P0A63 (all INF codes)*1	Drive Motor "A" Phase W Current
   P0A72-333	Generator Phase V Current
   P0A75-341	Generator Phase W Current
   P0A78-266, 267, 279, 287, 306, 503, 504, 505, 506, 586, 806, 807, 808	Drive Motor "A" Inverter Performance
   P0A7A-325, 517, 518, 809, 810, 811	Generator Inverter Performance
   P0A90-509	Drive Motor "A" Performance
   P0A94-442, 547, 548, 549, 554, 555, 556, 585, 587, 589, 590	DC/DC Converter Performance
   P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
   P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
   P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
   P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
   P0C76-523	Hybrid Battery System Discharge Time Too Long
   P3004-803	High Voltage Power Resource

   HINT: 

   • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
   • P0A7A-122 may be stored due to a malfunction which also causes DTCs in the preceding tables to be stored. In this case, first troubleshoot the output DTCs in the preceding tables. Then, perform a test to attempt to reproduce the problems, and check that no DTCs are output.
5. Turn the power switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

(Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] )

Result: 

A 

See step  4

Refer to PROCEDURE - Step 4

Result: 

NG 

CONNECT SECURELY 

Result: 

OK 

See step  5

Refer to PROCEDURE - Step 3

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

Refer to PROCEDURE - Step 4

Result: 

NG 

See step  19

Result: 

OK 

See step  7

Refer to PROCEDURE - Step 5

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  8

Refer to PROCEDURE - Step 6

Result: 

NG 

See step  21

Result: 

OK 

See step  9

See step  9

Result: 

B 

REPLACE MALFUNCTIONING PARTS 

Result: 

C 

CONNECT SECURELY 

Result: 

A 

See step  10

See step  10

Result: 

B 

REPLACE MALFUNCTIONING PARTS 

Result: 

C 

CONNECT SECURELY 

Result: 

A 

See step  11

See step  11

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

Result: 

OK 

See step  12

See step  12

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

Result: 

OK 

See step  13

See step  13

Result: 

NG 

See step  23

Result: 

OK 

See step  14

See step  14

Result: 

NG 

REPAIR OR REPLACE POWER SOURCE CIRCUIT 

Result: 

OK 

See step  15

See step  15

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  16

See step  16

Result: 

NG 

REPLACE POWER MANAGEMENT CONTROL ECU 

(Refer to COMPONENTS [10/2014 - 10/2015] )

Result: 

OK 

See step  17

Refer to PROCEDURE - Step 7

Result: 

NG 

CONNECT SECURELY 

Result: 

OK 

See step  18

Refer to PROCEDURE - Step 8

Result: 

OK 

REPLACE INVERTER WITH CONVERTER ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

Result: 

NG 

CONNECT SECURELY 

Refer to PROCEDURE - Step 9

Result: 

NG 

CONNECT SECURELY 

Result: 

OK 

See step  20

Refer to PROCEDURE - Step 10

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

Refer to PROCEDURE - Step 11

Result: 

NG 

CONNECT SECURELY 

Result: 

OK 

See step  22

Refer to PROCEDURE - Step 12

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

NG 

REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY 

(Refer to COMPONENTS [10/2014 - ] )

See step  23

Result: 

NG 

See step  25

Result: 

OK 

See step  24

(Refer to COMPONENTS [10/2014 - ] )

NEXT 

REPLACE FUSE (INV) 

NEXT 

REPLACE FUSE (INV)