DTC P0617-142: Starter Relay Circuit High: Procedure

1. Disconnect the A61 hybrid vehicle control ECU connector.
2. Measure the voltage according to the value(s) in the table below when the power switch is off.
   Fig 1: Identifying A61 Hybrid Vehicle Control ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   ST2 (A61-37) - Body ground	Below 1 V

OK → See step   3 

NG: Go to next step 

1. Disconnect the E9 main body ECU connector.
2. Measure the voltage according to the value(s) in the table below when the power switch is off.
   Fig 2: Identifying A61 Hybrid Vehicle Control System ECU And E9 Main Body ECU Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Specified Condition
   ST2 (A61-37) or STSW (E9-4) - Body ground	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE MAIN BODY ECU 

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. Select the following menu items: 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. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
4. Recheck for DTCs.

   Result

   DTC P0617-142 is output again.

NO → See step   5 

YES → See step   6