DTC P0617-142: Starter Relay Circuit High: Procedure

1. Check the connections of all hybrid vehicle control ECU connectors.
   Fig 1: Checking Connector Connection Condition (Hybrid Vehicle Control ECU Connector)

   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. Check if the vehicle is equipped with the smart key system.

   Result

   Result	Proceed to
   w/ Smart Key System	A
   w/o Smart Key System	B

B → See step   7 

A: Go to next step 

1. Check the connection of the main body ECU D10 connector.
   Fig 2: Checking Connector Connection Condition (Main Body ECU Connector)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connector is connected securely and there are no contact problems.

   TEXT IN ILLUSTRATION
   
   

   *1	Instrument Panel Junction Block (Main Body ECU)

NG → CONNECT SECURELY 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 3: Checking Harness And Connector (ST2 Terminal Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-10 (ST2) - Body ground	Power switch On (ACC)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Hybrid Vehicle Control ECU)

NG → See step   6 

OK → See step   5 

1. Disconnect connector D10 from the instrument panel junction block (main body ECU).
   Fig 4: Checking Harness And Connector (Hybrid Vehicle Control ECU - Main Body ECU)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Instrument Panel Junction Block (Main Body ECU)

2. Measure the voltage according to the value(s) in the table below.
   Fig 5: Checking Harness And Connector (ST2 Terminal Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-10 (ST2) - Body ground	Power switch On (ACC)	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Hybrid Vehicle Control ECU)

3. Connect the instrument panel junction block (main body ECU) connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE INSTRUMENT PANEL JUNCTION BLOCK 

1. Check the connection of the ignition switch connector.
   Fig 6: Checking Connector Connection Condition (Ignition Switch Connector)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The connector is connected securely and there are no contact problems.

NG → CONNECT SECURELY 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 7: Checking Harness And Connector (ST2 Terminal Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-10 (ST2) - Body ground	Ignition switch ACC	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Hybrid Vehicle Control ECU)

NG → See step   10 

OK → See step   9 

1. Disconnect the ignition switch connector.
   Fig 8: Checking Connector Connection Condition (Ignition Switch Connector)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.
   Fig 9: Checking Harness And Connector (ST2 Terminal Voltage)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A66-10 (ST2) - Body ground	Ignition switch ACC	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Hybrid Vehicle Control ECU)

3. Connect the ignition switch connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11