DTC B2275: Engine Start Request Control Circuit [11/2021 - ]: Procedure

1. Perform the diagnosis for CAN communication system.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Perform the inspection according to the diagnosis for CAN communication system.)	B

Result: 

B 

PERFORM THE INSPECTION ACCORDING TO THE DIAGNOSIS FOR CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

A 

See step  2

1. Turn the ignition switch to OFF.
2. Check the fuse.

   Is the check result OK?

   Result	Proceed to
   Yes	A
   No (Replace the fuse. When the replaced fuse is blown immediately, check the power supply circuit for short circuited.)	B

Result: 

B 

REPLACE FUSE 

1. Replace the fuse.
2. When the replaced fuse is blown immediately, check the power supply circuit for short circuited.

Result: 

A 

See step  3

1. Disconnect the connector from the smart key ECU assembly.
2. Disconnect the connector from ECM.
3. Using a tester, measure the resistance between the smart key ECU assembly connector and ECM.

   Connector & terminal

   F8-23 (STSW) - A5-25 (START)

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair or replace the open circuit of harness.)	B

Result: 

B 

REPAIR OR REPLACE THE OPEN CIRCUIT OF HARNESS 

Result: 

A 

See step  4

1. Using a tester, measure the resistance between the smart key ECU assembly connector and chassis ground.

   Connector & terminal

   F9-17 (GND2) - Chassis ground

   F8-20 (GND1) - Chassis ground

   Is the resistance less than 1 Ω?

   Result	Proceed to
   Yes	A
   No (Repair or replace the open circuit of harness.)	B

Result: 

B 

REPAIR OR REPLACE THE OPEN CIRCUIT OF HARNESS 

Result: 

A 

See step  5

1. Using a tester, measure the resistance between the smart key ECU assembly connector and chassis ground.

   Connector & terminal

   F8-23 (STSW) - Chassis ground

   Is the resistance 10 kΩ or more?

   Result	Proceed to
   Yes	A
   No (Repair or replace the short circuit of the harness.)	B

Result: 

B 

REPAIR OR REPLACE THE SHORT CIRCUIT OF THE HARNESS 

Result: 

A 

See step  6

1. Turn the ignition switch to ON.
2. Using a tester, measure the voltage between the smart key ECU assembly connector and chassis ground.

   Connector & terminal

   F8-23 (STSW) (+) - Chassis ground (-)

   Is the voltage 1 V or less?

   Result	Proceed to
   Yes	A
   No (Repair or replace the short circuit of the harness.)	B

Result: 

B 

REPAIR OR REPLACE THE SHORT CIRCUIT OF THE HARNESS 

Result: 

A 

See step  7

1. Turn the ignition switch to OFF.
2. Connect the disconnected connectors.
3. Place the electrical key transmitter sub-assembly in the passenger room.
4. Using a tester, measure the voltage between the terminals of smart key ECU assembly connector.

   Connector & terminal

   F8-23 (STSW) (+) - F8-20 (GND1) (-)

   Is the voltage 2 V or less → 9 V or more when the engine switch is turned on while depressing the brake pedal with the shift position in P or N (AT model), or while depressing the clutch pedal (MT model)?

   Result	Proceed to
   Yes (Perform inspection according to the diagnosis of engine.)	A
   No (Replace the smart key ECU assembly.)	B

Result: 

A 

PERFORM INSPECTION ACCORDING TO THE DIAGNOSIS OF ENGINE. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

Result: 

B 

REPLACE SMART KEY ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - ]