Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the power switch ON (IG).
3. Turn the intelligent tester ON.
4. Enter the following menus: DIAGNOSIS / OBD/MOBD / HV ECU / DATA LIST.
5. Read the ACCEL POS #1 and #2 values on the intelligent tester with the engine stopped.

   OK : Changes with accelerator pedal pressure 

OK : Go to step   5 

Fig 1: Depressing And Releasing Accelerator Pedal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : GO TO NEXT STEP 

1. Disconnect the H16 HV control ECU connector.
   Fig 2: Disconnecting H16 HV Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A13 accelerator pedal position sensor connector.
3. Turn the power switch ON (IG).
4. Measure the voltage between the terminals of the HV control ECU connector and body ground.

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   VPA1 (H16-26) - Body ground	Below 1 V
   VCP1 (H16-25) - Body ground	Below 1 V
   EP1 (H16-27) - Body ground	Below 1 V
   VPA2 (H16-34) - Body ground	Below 1 V
   VCP2 (H16-33) - Body ground	Below 1 V
   EP2 (H16-35) - Body ground	Below 1 V

   Fig 3: Identifying Accelerator Pedal Position Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Turn the power switch OFF.
6. Measure the resistance between the wire harness side connectors.

   Standard resistance (Check for open) 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   VPA1 (H16-26) - VPA (A13-6)	Below 1 Ω
   VCP1 (H16-25) - VCPA (A13-4)	Below 1 Ω
   EP1 (H16-27) - EPA (A13-5)	Below 1 Ω
   VPA2 (H16-34) - VPA2 (A13-3)	Below 1 Ω
   VCP2 (H16-33) - VCP2 (A13-1)	Below 1 Ω
   EP2 (H16-35) - EP2 (A13-2)	Below 1 Ω

   Standard resistance (Check for short) 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   VPA1 (H16-26) or VPA (A13-6) - Body ground	10 kΩ or higher
   VCP1 (H16-25) or VCPA (A13-4) - Body ground	10 kΩ or higher
   EP1 (H16-27) or EPA (A13-5) - Body ground	10 kΩ or higher
   VPA2 (H16-34) or VPA2 (A13-3) - Body ground	10 kΩ or higher
   VCP2 (H16-33) or VCP2 (A13-1) - Body ground	10 kΩ or higher
   EP2 (H16-35) or EP2 (A13-2) - Body ground	10 kΩ or higher

7. Reconnect the accelerator pedal position sensor connector.
8. Reconnect the HV control ECU connector.

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : GO TO NEXT STEP 

1. Disconnect the A13 accelerator pedal position sensor connector.
2. Turn the power switch ON (IG).
   Fig 4: Identifying Accelerator Pedal Position Sensor Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the voltage between the terminals of the HV control ECU connector.

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   VCP1 (H16-25) - EP1 (H16-27)	4.5 to 5.5 V
   VCP2 (H16-33) - EP2 (H16-35)	4.5 to 5.5 V

4. Reconnect the accelerator pedal position sensor connector.

NG : REPLACE HYBRID VEHICLE CONTROL ECU 

Fig 5: Identifying HV Control ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP 

1. Replace the Accelerator pedal rod (see ON-VEHICLE INSPECTION ).

GO 

1. Connect the intelligent tester to the DLC3.
2. Turn the power switch ON (IG).
3. Turn the intelligent tester ON.
4. Enter the following menus: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CURRENT CODES.
5. Perform a simulation test.
6. Read DTCs.

   Result: DTC P2122, P2123, P2127 or P2128 is not output again 

YES : SYSTEM IS OK 

NO : REPLACE HYBRID VEHICLE CONTROL ECU