Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

STEERING LOCK FUNCTION

Symptom	Suspected Area	See
Steering wheel cannot be unlocked (the engine cannot be started).	1. Check for DTCs in the smart access system with push-button start	Refer to DIAGNOSTIC TROUBLE CODE CHART
	2. Check for DTCs in the engine immobiliser system	Refer to DIAGNOSTIC TROUBLE CODE CHART
	3. 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
	4. Check the output from the IGE terminal of the steering lock ECU	Refer to Steering Lock Motor Drive Power Circuit
	5. Steering lock ECU power source circuit	Refer to Power Source Circuit
	6. Replace the steering lock ECU	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 smart access system with push-button start	Refer to DIAGNOSTIC TROUBLE CODE CHART
	2. Check for DTCs in the engine immobiliser system	Refer to DIAGNOSTIC TROUBLE CODE CHART
	3. With the power switch OFF and the shift in the P position, open and close the driver 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
	4. Check the output from the IGE terminal of the steering lock ECU	Refer to Steering Lock Motor Drive Power Circuit
	5. Steering lock ECU power source circuit	Refer to Power Source Circuit
	6. Replace the steering lock ECU	Refer to REMOVAL
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	See
Engine does not start.	1. Check for DTCs in the smart access system with push-button start	Refer to DIAGNOSTIC TROUBLE CODE CHART
	2. Check for DTCs in the engine immobiliser system	Refer to DIAGNOSTIC TROUBLE CODE CHART
	3. Check that the power switch is turned ON (IG)	-
	4. Check cranking operation (If cranking operation is possible, see "Engine does not start due to the engine immobiliser" in this table)	-
	5. Check "Shift P Sig" in the Data List of the power source control ECU and confirm that the shift signal is normal	-
	6. 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)	-
	7. Check the output from the SLP terminal of the steering lock ECU	Refer to Unlock Position Sensor Signal Circuit
	8. Check the output signal from the STSW terminal of the power source control ECU (DTC B2275)	Refer to DESCRIPTION
	9. Replace the power source control ECU	-
Engine does not start due to the engine immobiliser.	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	-