DTC P0A7E:00 [PCM (e-SKYACTIV)]

System malfunction location	High voltage battery: Temperature increase (charging)
Detection condition	• The PCM receives a condition signal from the BECM for 5 s indicating that the high voltage battery temperature is 70 °C {158 °F} or more while the high voltage battery is charging.
Fail-safe	• Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [PCM (e-SKYACTIV)].)
Possible cause	• Malfunction of 2way valve for refrigerant • Malfunction of 3way valve for refrigerant High voltage battery malfunction: • Electric expansion valve malfunction • PCM malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

System malfunction location

High voltage battery: Temperature increase (charging)

Detection condition

• The PCM receives a condition signal from the BECM for 5 s indicating that the high voltage battery temperature is 70 °C {158 °F} or more while the high voltage battery is charging.

Fail-safe

• Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [PCM (e-SKYACTIV)].)

Possible cause

• Malfunction of 2way valve for refrigerant

• Malfunction of 3way valve for refrigerant

High voltage battery malfunction:

• Electric expansion valve malfunction

• PCM malfunction

System wiring diagram

• Not applicable

Connector diagram

• Not applicable

<<High voltage>>

• If necessary measures such as wearing the correct protective gear are not taken when inspecting or removing/installing the high voltage parts, it could cause electrical shock and result in serious injury or, in the worst case, death.

• Before inspecting or removing/installing the high voltage parts, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and [High Voltage Part Inspection and Removal/Installation Notes] of the high voltage system service cautions and implement the necessary measures and preparations. (See HIGH VOLTAGE SERVICE CAUTIONS.) (See HIGH VOLTAGE SYSTEM SERVICE CAUTIONS.)

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION • Record the snapshot data. Note • Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
2	INSPECT REFRIGERANT PRESSURE • Inspect the refrigerant pressure. (See REFRIGERANT PRESSURE CHECK.) • Is the refrigerant pressure normal?	Yes	Perform malfunction diagnosis according to the symptom troubleshooting for [AIR FROM VENTS NOT COLD ENOUGH] of the climate control system. (See AIR FROM VENTS NOT COLD ENOUGH [FULL-AUTO AIR CONDITIONER].)
No	Go to the next step.
3	VERIFY HIGH VOLTAGE BATTERY TEMPERATURE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM: ― HV_BATT_TEMP_MAX • Is PID HV_BATT_TEMP_MAX 40 °C {104 °F} or more?	Yes	Go to the next step.
No	Go to step5.
4	PERFORM HIGH VOLTAGE BATTERY COOLING • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min. 1. Press [Start] to start the vehicle identification. 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Compulsory operating Air Conditioner. 6. Select [Cooling for drive battery] and press [Next]. • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION.) BECM: ― HV_BATT_TEMP_MAX • Is PID HV_BATT_TEMP_MAX 40 °C {104 °F} or more?	Yes	Perform the inspection content in Step 4 until the value of PID HV_BATT_TEMP_MAX is 40 °C {104 °F} or less.
No	Go to the next step.
5	PERFORM ON-BOARD DIAGNOSTIC FOR 2WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant. 1. Press [Start] to start the vehicle identification 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [2-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to the next step.
No	If [Abnormal] is displayed: • Replace the 2way valve, then go to the repair completion verification 1. (See 2WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) If [Incomplete] is displayed: • Go to step7.
6	PERFORM ON-BOARD DIAGNOSTIC FOR 3WAY VALVE FOR REFRIGERANT • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant. 1. Press [Start] to start the vehicle identification 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [3-way valve] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Go to step9.
No	If [Abnormal] is displayed: • Replace the 3way valve, then go to the repair completion verification 1. (See 3WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) If [Incomplete] is displayed: • Go to step8.
7	INSPECT 2WAY VALVE FOR REFRIGERANT FOR MALFUNCTION BY OPERATION SOUND • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, display the heat pump control unit simulation item [2_WAY_VLV]. (See SIMULATION INSPECTION.) • Touch the A/C icon to turn the A/C on. Note • For the applicable simulation item, the simulation can be implemented with the A/C turned off. • Switch the 2way valve for refrigerant ON/OFF using the simulation function. • When the 2way valve for refrigerant is switched ON/OFF, can operation sound be heard from the 2way valve for refrigerant?	Yes	Go to the next step.
No	Replace the 2way valve, then go to the repair completion verification 1. (See 2WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
8	INSPECT 3WAY VALVE FOR REFRIGERANT FOR MALFUNCTION BY OPERATION SOUND • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Using the M-MDS, display the heat pump control unit simulation item [3_WAY_VLV]. (See SIMULATION INSPECTION.) • Touch the A/C icon to turn the A/C on. Note • For the applicable simulation item, the simulation can be implemented with the A/C turned off. • Switch the 3way valve for refrigerant ON/OFF using the simulation function. • When the 3way valve for refrigerant is switched ON/OFF, can operation sound be heard from the 3way valve for refrigerant?	Yes	Go to the next step.
No	Replace the 3way valve, then go to the repair completion verification 1. (See 3WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
9	PERFORM ON-BOARD DIAGNOSTIC FOR ELECTRIC EXPANSION VALVE • Connect the M-MDS to the DLC-2. • Switch the main power ON. • Select the following menu and perform the on-board diagnostics for the electric expansion valve. 1. Press [Start] to start the vehicle identification 2. Press the [Toolbox] tab. 3. Press the [Work Support] icon. 4. Press [EV]. 5. Press [Run] for Self-Diagnosing Air Conditioner control valves. 6. Select [Expansion valve for cooling battery] and press [Next]. • Is [Normal] displayed as the diagnosis result?	Yes	Perform the repair completion verification1.
No	Replace the high voltage battery, then go to the repair completion verification 1. (See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Warning <<High voltage>> • Wear insulated gloves when working on a high voltage system. • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Replicate the vehicle conditions at the time the DTC was detected using the following procedure. Warning • While performing this step, always operate the vehicle in a safe and lawful manner. • When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later. ― Drive the vehicle under the snapshot data condition. • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION.)
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

• Record the snapshot data.

Note

• Recording can be facilitated using the screen capture function of the PC.

—

Go to the next step.

INSPECT REFRIGERANT PRESSURE

• Inspect the refrigerant pressure.

(See REFRIGERANT PRESSURE CHECK.)

• Is the refrigerant pressure normal?

Yes

Perform malfunction diagnosis according to the symptom troubleshooting for [AIR FROM VENTS NOT COLD ENOUGH] of the climate control system.

(See AIR FROM VENTS NOT COLD ENOUGH [FULL-AUTO AIR CONDITIONER].)

Go to the next step.

VERIFY HIGH VOLTAGE BATTERY TEMPERATURE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM:

― HV_BATT_TEMP_MAX

• Is PID HV_BATT_TEMP_MAX 40 °C {104 °F} or more?

Yes

Go to the next step.

Go to step5.

PERFORM HIGH VOLTAGE BATTERY COOLING

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Select the following menu and perform the forced operation of the high voltage battery cooling system for 5 min.

1. Press [Start] to start the vehicle identification.

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Compulsory operating Air Conditioner.

6. Select [Cooling for drive battery] and press [Next].

• Display the following PIDs using the M-MDS.

(See PID/DATA MONITOR INSPECTION.)

BECM:

― HV_BATT_TEMP_MAX

• Is PID HV_BATT_TEMP_MAX 40 °C {104 °F} or more?

Yes

Perform the inspection content in Step 4 until the value of PID HV_BATT_TEMP_MAX is 40 °C {104 °F} or less.

Go to the next step.

PERFORM ON-BOARD DIAGNOSTIC FOR 2WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 2way valve for refrigerant.

1. Press [Start] to start the vehicle identification

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [2-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to the next step.

If [Abnormal] is displayed:

• Replace the 2way valve, then go to the repair completion verification 1.

(See 2WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

If [Incomplete] is displayed:

• Go to step7.

PERFORM ON-BOARD DIAGNOSTIC FOR 3WAY VALVE FOR REFRIGERANT

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, select the service support item [Self-Diagnosing Air Conditioner control valves] and inspect the 3way valve for refrigerant.

1. Press [Start] to start the vehicle identification

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [3-way valve] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Go to step9.

If [Abnormal] is displayed:

• Replace the 3way valve, then go to the repair completion verification 1.

(See 3WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

If [Incomplete] is displayed:

• Go to step8.

INSPECT 2WAY VALVE FOR REFRIGERANT FOR MALFUNCTION BY OPERATION SOUND

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, display the heat pump control unit simulation item [2_WAY_VLV].

(See SIMULATION INSPECTION.)

• Touch the A/C icon to turn the A/C on.

Note

• For the applicable simulation item, the simulation can be implemented with the A/C turned off.

• Switch the 2way valve for refrigerant ON/OFF using the simulation function.

• When the 2way valve for refrigerant is switched ON/OFF, can operation sound be heard from the 2way valve for refrigerant?

Yes

Go to the next step.

Replace the 2way valve, then go to the repair completion verification 1.

(See 2WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

INSPECT 3WAY VALVE FOR REFRIGERANT FOR MALFUNCTION BY OPERATION SOUND

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Using the M-MDS, display the heat pump control unit simulation item [3_WAY_VLV].

(See SIMULATION INSPECTION.)

• Touch the A/C icon to turn the A/C on.

Note

• For the applicable simulation item, the simulation can be implemented with the A/C turned off.

• Switch the 3way valve for refrigerant ON/OFF using the simulation function.

• When the 3way valve for refrigerant is switched ON/OFF, can operation sound be heard from the 3way valve for refrigerant?

Yes

Go to the next step.

Replace the 3way valve, then go to the repair completion verification 1.

(See 3WAY VALVE FOR REFRIGERANT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

PERFORM ON-BOARD DIAGNOSTIC FOR ELECTRIC EXPANSION VALVE

• Connect the M-MDS to the DLC-2.

• Switch the main power ON.

• Select the following menu and perform the on-board diagnostics for the electric expansion valve.

1. Press [Start] to start the vehicle identification

2. Press the [Toolbox] tab.

3. Press the [Work Support] icon.

4. Press [EV].

5. Press [Run] for Self-Diagnosing Air Conditioner control valves.

6. Select [Expansion valve for cooling battery] and press [Next].

• Is [Normal] displayed as the diagnosis result?

Yes

Perform the repair completion verification1.

Replace the high voltage battery, then go to the repair completion verification 1.

(See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

Warning

<<High voltage>>

• Wear insulated gloves when working on a high voltage system.

• Install/connect the part removed/disconnected during the troubleshooting procedure.

• Clear the DTC recorded in the memory.

(See CLEARING DTC.)

• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.

Warning

• While performing this step, always operate the vehicle in a safe and lawful manner.

• When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

― Drive the vehicle under the snapshot data condition.

• Perform the DTC inspection for the PCM.

(See DTC INSPECTION.)

• Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].)

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)

If the CAN communication is normal, perform the diagnosis from Step 1.

• If the malfunction recurs, replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION.)

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

• Perform the DTC inspection.

(See DTC INSPECTION.)

• Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

DTC troubleshooting completed.