DTC P0615-19: Starter Relay Circuit Current Above Threshold [08/2020 - 12/2021]: Procedure

1. Disconnect the engine stop and start ECU connector.
2. Remove the BBC NO. 1 fuse and BBC NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A33-1 (BIN2) - BBC NO. 2 fuse terminal 2	Always	Below 1 Ω
   A33-3 (BIN1) - BBC NO. 1 fuse terminal 2	Always	Below 1 Ω
   A33-1 (BIN2) or BBC NO. 2 fuse terminal 2 - Body ground and other terminals	Always	10 kΩ or higher
   A33-3 (BIN1) or BBC NO. 1 fuse terminal 2 - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - BBC NO. 1 FUSE OR BBC NO. 2 FUSE) 

Result: 

OK 

See step  2

1. Disconnect the engine stop and start ECU connectors.
2. Remove the ST NO. 1 relay and ST NO. 2 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
3. Disconnect the certification ECU (smart key ECU assembly) connector. (w/ Smart Key System)
4. Disconnect the park/neutral position switch assembly connector.
5. Disconnect the ECM connector.
6. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A34-21 (STA) - 2 (ST NO. 1 relay)	Always	Below 1 Ω
   A34-23 (STA2) - 2 (ST NO. 2 relay)	Always	Below 1 Ω
   A34-21 (STA) or 2 (ST NO. 1 relay) - Body ground and other terminals	Always	10 kΩ or higher
   A34-23 (STA2) or 2 (ST NO. 2 relay) - Body ground and other terminals	Always	10 kΩ or higher
   A33-1 (BIN2) - A34-21 (STA)	Always	10 kΩ or higher
   A33-3 (BIN1) - A34-21 (STA)	Always	10 kΩ or higher
   A33-1 (BIN2) - A34-23 (STA2)	Always	10 kΩ or higher
   A33-3 (BIN1) - A34-23 (STA2)	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE STOP AND START ECU - ST NO. 1 RELAY OR ST NO. 2 RELAY) 

Result: 

OK 

See step  3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the engine stop and start ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A34-21 (STA) - A34-6 (DGND)	Always	10 kΩ or higher
   A34-23 (STA2) - A34-6 (DGND)	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [08/2020 - 10/2022] 

Result: 

OK 

See step  4

1. Inspect the ST NO. 1 relay.

   Refer to PROCEDURE - Step 1

2. Inspect the ST NO. 2 relay.

   Refer to PROCEDURE - Step 2

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

NG 

REPLACE RELAY (ST NO. 1 RELAY OR ST NO. 2 RELAY)