Control Pilot Signal Circuit: Procedure

1. Using the electric vehicle charger cable assembly, plug-in charge the vehicle.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Enter the following menus: Powertrain / Plug-in Control / Data List / CPLT Pulse Time, CPLT Output Voltage.
5. Read the value displayed on the Techstream.

   Tester Display	Measurement Item/Range	Normal Condition
   CPLT Pulse Time	Duration of 1 cycle of CPLT/ Min.: 0 μs, Max.: 65535 μs	980 to 1020 μs: CPLT (control pilot signal) generated
   CPLT Output Voltage	CPLT terminal voltage/ Min.: 0.0 V, Max.: 25.5 V	8 to 10 V: Connected, not ready to receive power 5 to 7 V: Connected, ready to receive power, indoor charging ventilation not required 3 V: Connected, ready to receive power, indoor charging ventilation required 0 V: Not connected to the EVSE (charging station) system or power unavailable

   OK

   Data List values are within the specified range.

6. Turn the power switch off.
7. Disconnect the electric vehicle charger cable assembly.

NG → See step   2 

OK → See step   5 

1. Open the charging port lid.
2. Disconnect connector S31 from the plugin charge control ECU assembly.
3. Measure the resistance according to the value(s) in the table below.
   Fig 1: Checking t1 & S31 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   t1-4 (CPLT) - S31-21 (CPLT)	Power switch off	Below 1 Ω
   t1-3 (GND) and S31-3 (CPG) - Body ground	Power switch off	Below 1 Ω
   t1-4 (CPLT) or S31-21 (CPLT) - Body ground and other terminals	Power switch off	10 kΩ or higher
   t1-3 (GND) or S31-3 (CPG) - other terminals	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Electric Vehicle Charger Cable (Charging Inlet Side)
   *b	Rear view of wire harness connector (to Plugin Charge Control ECU Assembly)

4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   t1-4 (CPLT) or S31-21 (CPLT) - Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the plugin charge control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Connect the plugin charge control ECU assembly connector.
8. Close the charging port lid.

NG → See step   4 

OK: Go to next step 

1. Connect the electric vehicle charger cable assembly to a 120 V outlet.
2. Measure the voltage according to the value(s) in the table below.
   Fig 2: Checking t1 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   t1-4 (CPLT) - t1-3 (GND)	Electric vehicle charger cable assembly connected to a 120 V outlet	11.4 to 12.6 V

   TEXT IN ILLUSTRATION
   
   

   *a	Electric Vehicle Charger Cable Assembly (Charging Connector Side)

3. Disconnect the electric vehicle charger cable assembly from the 120 V outlet.

NG → REPLACE ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY 

OK → See step   7 

1. Disconnect connector St1 from the electric vehicle charger cable.
   Fig 3: Checking St1 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect connector S31 from the plugin charge control ECU assembly.
3. Measure the resistance according to the value(s) in the table below.
   Fig 4: Checking St1 & S31 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   St1-1 (CPLT) - S31-21 (CPLT)	Power switch off	Below 1 Ω
   St1-3 (CPG) - S31-3 (CPG)	Power switch off	Below 1 Ω
   St1-1 (CPLT) or S31-21 (CPLT) - Body ground and other terminals	Power switch off	10 kΩ or higher
   St1-3 (CPG) or S31-3 (CPG) - other terminals	Power switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Electric Vehicle Charger Cable)
   *b	Rear view of wire harness connector (to Plugin Charge Control ECU Assembly)

4. Turn the power switch on (IG).
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   St1-1 (CPLT) or S31-21 (CPLT) - Body ground	Power switch on (IG)	Below 1 V

   NOTE:

   Turning the power switch on (IG) with the plugin charge control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

6. Turn the power switch off.
7. Connect the plugin charge control ECU assembly connector.
8. Connect the electric vehicle charger cable connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   6