Test Procedure

TL1 DIAGNOSTIC TROUBLE CODES (DTCS) P0A3B AND P0A3E: CHECK FOR SELF-TEST DTCS

Is DTC P0A3B or P0A3E present during PCM or transaxle control module (TCM) self-test?

Yes	No
For DTC P0A3B, GO to TL6. For DTC P0A3E, GO to TL2.	Unable to duplicate or identify the concern at this time. RETURN to SYMPTOM CHARTS for further direction.

TL2 DTC P0A3E: CHECK FOR THE PRESENCE OF PCM DTCS P0A00, P0A02, P0A03, AND P0A7C

Are any of the above listed DTCs present?

Yes	No
DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .	GO to TL3.

TL3 VISUAL INSPECTION OF THE MOTOR ELECTRONICS COOLING SYSTEM

NOTE: Repair any MECS pump DTCs before proceeding.

Visually inspect the motor electronics cooling system for leaks, pinched hoses, restricted radiator air flow, correct coolant level, coolant flow at the degas reservoir, fan operation, and loose electrical connections.

Is the motor electronics cooling system OK?

Yes	No
GO to TL4.	REPAIR as necessary. Clear the TCM DTCs. REPEAT the self-test.

TL4 CHECK THE TCM MOTOR ELECTRONICS COOLANT TEMPERATURE (MECT) PID

NOTE: Access the MECT PID from the freeze frame PID menu. Refer to the scan tool instruction manual for freeze frame PID menu.

Is the temperature less than 70°C (158°F)?

Yes	No
INSTALL a new transaxle assembly. Refer to the ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT)	GO to TL5.

TL5 CHECK THE GCLTEMP WHILE RECREATING THE SYMPTOM

NOTE: The vehicle may need to be driven in order to recreate the original conditions that set the DTC or caused the symptom.

Access the freeze frame data (if available) and record the DTC conditions.
Clear the TCM DTCs.
Obtain information from the customer information worksheet or any other available data from the customer.
Recreate the symptom using freeze frame and customer information.
Access the TCM and monitor the GCLTEMP (TEMP) PID.

Is the temperature less than 220°C (428°F) when the symptom occurs?

Yes	No
Unable to duplicate or identify the concern at this time. RETURN to SYMPTOM CHARTS for further direction.	INSTALL a new transaxle assembly. Refer to the ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT)

TL6 DTC P0A3B: CHECK THE AUTOMATIC TRANSAXLE FLUID LEVEL

NOTE: A low automatic transaxle fluid level may cause an generator motor over temperature condition.

Verify the automatic transaxle fluid level is correct. Refer to the ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT)

Is the transaxle fluid level correct?

Yes	No
GO to TL7.	ADD the necessary fluid to obtain the correct fluid level. Refer to the ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) GO to TL8.

TL7 VISUAL INSPECTION OF THE MOTOR ELECTRONICS COOLING SYSTEM

NOTE: Repair any MECS pump DTCs before proceeding.

Visually inspect the motor electronics cooling system for leaks, pinched hoses, restricted radiator air flow, correct coolant level, coolant flow at the degas reservoir, fan operation, and loose electrical connections.

Is the motor electronics cooling system OK?

Yes	No
GO to TL8.	REFER to the AUTOMATIC TRANSAXLE COOLING (ECVT) (HYBRID) , to diagnose motor electronics cooling system concerns.

TL8 MONITOR THE GCLTEMP WHILE RECREATING THE SYMPTOM

NOTE: Refer to the scan tool instruction manual for freeze frame PID menu.

NOTE: The vehicle may need to be driven in order to recreate the original conditions that set the DTC or caused the symptom.

Access the freeze frame data (if available) and record the DTC conditions.
Clear the TCM DTCs.
Obtain information from the customer information worksheet or any other available data from the customer.
Recreate the symptom using freeze frame and customer information.
Access the TCM and monitor the GCLTEMP (TEMP) PID.
Record the GCLTEMP PID reading when the symptom occurs.

Could the symptom be recreated?

Yes	No
GO to TL9.	Unable to duplicate or identify the concern at this time. RETURN to SYMPTOM CHARTS for further direction.

TL9 CHECK THE GCLTEMP WHILE RECREATING THE SYMPTOM

Is the temperature less than 220°C (428°F) when the symptom occurs?

Yes	No
RETURN to SYMPTOM CHARTS for further direction.	INSTALL a new transaxle assembly. Refer to the ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT)