Problem Symptoms Table

Inspect the suspected areas in numerical order by referring to the corresponding pages when any of the following symptoms occurs.

STEERING LOCK FUNCTION

Symptom	Suspected Area	Refer To
Steering wheel cannot be unlocked (the engine cannot be started).	1. Check for DTCs in the push button start. (for 2GR-FSE)	Refer to DTC CHECK / CLEAR
	2. Check for DTCs in the push button start. (for 1UR-FSE)	Refer to DTC CHECK / CLEAR
	3. Check for DTCs in the engine immobilizer system.	Refer to DTC CHECK / CLEAR
	4. Check that the "Lock/Unlock Receive" item in the Data List of the certification ECU displays YES within 10 seconds after starting the engine. (If it displays NO, see "No steering unlock command" in this table.)	Refer to DATA LIST / ACTIVE TEST
	5. Check the output from the IGE terminal of the steering lock ECU.	Refer to Steering Lock Motor Drive Power Circuit
	6. Steering lock ECU power source circuit	Refer to Power Source Circuit
	7. Replace the steering lock ECU. (for 2GR-FSE)	Refer to DISASSEMBLY
	8. Replace the steering lock ECU. (for 1UR-FSE)	Refer to DISASSEMBLY
Steering wheel cannot be unlocked (no steering unlock command).	1. Check that the "S Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.)	-
	2. Check that the "L Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU or ID code box.)	-
	3. Replace the certification ECU.	-
Steering wheel cannot be locked.	1. Check for DTCs in the push button start. (for 2GR-FSE)	Refer to DTC CHECK / CLEAR
	2. Check for DTCs in the push button start. (for 1UR-FSE)	Refer to DTC CHECK / CLEAR
	3. Check for DTCs in the engine immobilizer system.	Refer to DTC CHECK / CLEAR
	4. With the engine switch OFF and the shift in the P position, open and close the drivers door. After that, check that the "Lock/Unlock Receive" item in the Data List of the certification ECU displays YES within 10 seconds. (If it displays NO, see "No steering lock command" in this table.)	Refer to DATA LIST / ACTIVE TEST
	5. Check the output from the IGE terminal of the steering lock ECU.	Refer to Steering Lock Motor Drive Power Circuit
	6. Steering lock ECU power source circuit	Refer to Power Source Circuit
	7. Replace the steering lock ECU. (for 2GR-FSE)	Refer to DISASSEMBLY
	8. Replace the steering lock ECU. (for 1UR-FSE)	Refer to DISASSEMBLY
Steering wheel cannot be locked (no steering lock command).	1. Courtesy light switch circuit	-
	2. Check that the "S Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.)	-
	3. Check that the "L Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU or ID code box.)	-
	4. Replace the certification ECU.	-

PUSH BUTTON START FUNCTION

Symptom	Suspected Area	Refer To
Engine does not start.	1. Check for DTCs in the push button start. (for 2GR-FSE)	Refer to DTC CHECK / CLEAR
	2. Check for DTCs in the push button start. (for 1UR-FSE)	Refer to DTC CHECK / CLEAR
	3. Check for DTCs in the engine immobilizer system.	Refer to DTC CHECK / CLEAR
	4. Check that the engine switch is turned on.	-
	5. Check cranking operation. (If cranking operation is possible, see "Engine does not start due to the engine immobilizer" in this table.)	-
	6. Check "Shift P Sig" in the Data List of the power source control ECU and confirm that the shift signal is normal.	-
	7. Check whether the steering wheel is locked or unlocked. (If it is locked, see "Steering wheel cannot be unlocked" in the steering lock function table.)	-
	8. Check the output from the SLP terminal of the steering lock ECU.	Refer to Unlock Position Sensor Signal Circuit
	9. Check the output signal from the ST SW of the certification ECU (DTC B2275). (for 2GR-FSE)	Refer to DTC B2275: STSW Monitor Malfunction
	10. Check the output signal from the ST SW of the certification ECU (DTC B2275). (for 1UR-FSE)	Refer to DTC B2275: STSW Monitor Malfunction
	11. Replace the power source control ECU.	-
Engine does not start due to the engine immobilizer.	1. Check that the "L Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the steering lock ECU or ID code box.)	-
	2. Check that the "Engine Start Request" item in the Data List of the certification ECU displays YES. (If it displays NO, replace the certification ECU.)	-
	3. Check that the "S Code Check" item in the Data List of the certification ECU displays OK. (If it displays NG, replace the certification ECU or ID code box.)	-
	4. Replace the ID code box.	-