DTC P0615-15: Starter Relay Circuit Short to Battery or Open [03/2023 - ]: Procedure

1. Read the values displayed on the GTS when the ignition switch is ON and START.

   Powertrain > Stop and Start > Data List 

   Tester Display
   Starter

   OK

   Tester Display	Condition	Normal Condition
   Starter	Ignition switch ON	OFF
   	Ignition switch START	ON

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  6

Result: 

OK 

See step  2

1. Check if the stop and start system operates.

   Refer to OPERATION CHECK [11/2021 - ]

   Result

   Proceed to
   OPERATES
   DOES NOT OPERATE

Result: 

OPERATES 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

DOES NOT OPERATE 

See step  3

1. Clear the DTC.

   Powertrain > Stop and Start > Clear DTCs 

2. Turn the ignition switch off and wait for 30 seconds or more.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Check if the stop and start system operates.

   Refer to OPERATION CHECK [11/2021 - ]

   Result

   Proceed to
   OPERATES
   DOES NOT OPERATE

Result: 

OPERATES 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

DOES NOT OPERATE 

See step  5

1. Read the DTCs.

   Powertrain > Stop and Start > Trouble Codes 

   Result

   Result	Proceed to
   DTC P0615-15 is output	A
   DTCs are not output	B

Result: 

A 

REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [11/2021 - ] 

Result: 

B 

END 

1. Disconnect the engine stop and start ECU connector.
2. Disconnect the ECM connector.
3. Disconnect the certification ECU (smart key ECU assembly) connector.
4. Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A29-21 (STA) - ST NO. 1 relay terminal 2	Always	Below 1 Ω
   A29-21 (STA) - Body ground	Always	10 kΩ or higher
   ST NO. 1 relay terminal 2 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  7

1. Inspect the ST NO. 1 relay.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE RELAY (ST NO. 1 RELAY) 

Result: 

OK 

See step  8

1. Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   ST NO. 1 relay terminal 1 - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ENGINE STOP AND START ECU. Refer to  REMOVAL [11/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR