DTC P0A90-251: Drive Motor "A" Performance: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A90-251 only is output.	A
   Any of the following DTCs are also output.	B

   DTC No.	Relevant Diagnosis
   P0A1A (all INF codes)*1	Generator Control Module
   P0A1B (all INF codes)*1	Drive Motor "A" Control Module
   P0A1C (all INF codes)*1	Drive Motor "B" Control Module
   P0A1D (all INF codes)*1	Hybrid Powertrain Control Module
   P0A60 (all INF codes)*1	Drive Motor "A" Phase V Current
   P0A63 (all INF codes)*1	Drive Motor "A" Phase W Current
   P0A69 (all INF codes)*1	Drive Motor "B" Phase V Current
   P0A6C (all INF codes)*1	Drive Motor "B" Phase W Current
   P0A72 (all INF codes)*1	Generator Phase V Current
   P0A75 (all INF codes)*1	Generator Phase W Current
   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
   P0A45-669	Drive Motor "B" Position Sensor Circuit
   P0A46-671	Drive Motor "B" Position Sensor Circuit Range/Performance
   P0A47-670	Drive Motor "B" 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
   P0A51-174	Drive Motor "A" Current Sensor Circuit
   P0A55-687	Drive Motor "B" Current Sensor Circuit
   P0A78-202, 266, 267, 306, 510, 586	Drive Motor "A" Inverter Performance
   P0A79-703, 704	Drive Motor "B" Current Sensor Circuit
   P0A7A-344, 522	Generator Inverter Performance
   P0A90-509	Drive Motor "A" Performance
   P0A91-702	Drive Motor "B" Performance
   P0A92-521	Hybrid Generator Performance
   P0A94-585, 587, 589, 590	DC / DC Converter Performance
   P0AA6 (all INF codes)*1	Hybrid Battery Voltage System Isolation Fault
   P0C76-523	Hybrid Battery System Discharge Time Too Long
   P3004-132	Power Cable Malfunction
   P3233-750	Short to B+ in Blocking of HV Gate Connection

   HINT: 

   • *1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
   • P0A90-251 may be output due to a malfunction which causes the DTCs in the table above to be output. In this case, first troubleshoot the output DTCs in the table above. Then, perform a reproduction test to check that no DTCs are output.
5. Turn the ignition switch off.

B → See step   5 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Test-drive the vehicle at a speed of 25 mph (40 km/h) for approximately 1 minute.
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
5. Check if DTCs are output.

   Result

   Result	Proceed to
   P0A90-251 is output or no DTC is output.	A
   P0A78-306 or P0A90-509 is output.	B

6. Turn the ignition switch off.

B → See step   5 

A: Go to next step 

NG → CONNECT SECURELY 

OK: Go to next step 

B → REPLACE MALFUNCTIONING PARTS 

C → CONNECT SECURELY 

A → See step   6