DTC P0617-142: Starter Relay Circuit High: Procedure

1. Check the connections of the hybrid vehicle control ECU connectors.

   OK

   The connectors are connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Check the connections of the main body ECU connectors.
   Fig 1: Identifying Driver Side Junction Block (Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connectors are connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Turn the power switch off.
2. Measure the voltage according to the value(s) in the table below.
   Fig 2: Identifying A76 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A76-28 (ST2) - Body ground	Power switch off	Below 1 V

NG → See step   4 

OK → See step   5 

1. Disconnect connector A68 from the driver side junction block (main body ECU).
   Fig 3: Identifying Driver Side Junction Block (Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying A76 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   A76-28 (ST2) - Body ground	Power switch off	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE DRIVER SIDE JUNCTION BLOCK