DTC P0617-142: Starter Relay Circuit High: Procedure

1. Disconnect connector A58 from the hybrid vehicle control ECU.
2. Measure the voltage according to the value(s) in the table below when the power switch is off.
   Fig 1: Identifying A58 From The Hybrid Vehicle Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-37 (ST2) - Body ground	Power switch off	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Hybrid Vehicle Control ECU)

3. Connect the hybrid vehicle control ECU connector.

NG → See step   4 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Read and record the DTCs and freeze frame data.
4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
5. Clear the DTCs and freeze frame data.

NEXT: Go to next step 

1. Turn the power switch off and leave the vehicle as it is for approximately 5 seconds.
2. Turn the power switch on (IG) again.
3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
4. Recheck for DTCs.

   Result

   Result	Proceed to
   DTC P0617-142 is output again	A
   DTC P0617-142 is not output	B

B → See step   6 

A → See step   7 

1. Disconnect connector F51 from the power management control ECU connector.
2. Disconnect connector A58 from the hybrid vehicle control ECU connector.
3. Measure the voltage according to the value(s) in the table below when the power switch is off.
   Fig 2: Identifying F51 From The Power Management Control ECU & A58 Hybrid Vehicle Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1

   Front view of wire harness connector (to Power Management Control ECU)

   *2

   Front view of wire harness connector (to Hybrid Vehicle Control ECU)

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A58-37 (ST2) or F51-7 (ST2) - Body ground	Power switch off	Below 1 V

4. Connect the power management control ECU connector.
5. Connect the hybrid vehicle control ECU connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5