DTC P0617-142: Starter Relay Circuit High [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR)
See step 1

Result

Proceed to

OK

NG

Result: 2

NG

CONNECT SECURELY

Result: 1

OK

See step 2

CHECK CONNECTOR CONNECTION CONDITION (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY])

Check the connector connection condition of the certification ECU (smart key ECU assembly).

Refer to REMOVAL [11/2016 - ]

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

Result

Proceed to
OK
NG

Result: 2

CONNECT SECURELY

Result: 1

See step 3

CHECK HARNESS AND CONNECTOR (ST2 TERMINAL VOLTAGE)

Turn the power switch off.

Measure the voltage according to the value(s) in the table below.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Voltage

Tester Connection	Condition	Specified Condition
F136-9 (ST2) - Body ground	Power switch off	Below 1 V

Result

Proceed to
OK
NG

Result: 1

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to COMPONENTS [11/2016 - ]

Result: 2

See step 4

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY])

Disconnect the F9 certification ECU (smart key ECU assembly) connector.

Measure the voltage according to the value(s) in the table below.

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

Standard Voltage

Tester Connection	Condition	Specified Condition
F136-9 (ST2) - Body ground	Power switch off	Below 1 V

Reconnect the F9 certification ECU (smart key ECU assembly) connector.

Result

Proceed to
OK
NG

Result: 1

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to COMPONENTS [11/2016 - ]

Result: 2

REPAIR OR REPLACE HARNESS OR CONNECTOR