STEERING LOCK SYSTEM PROBLEM SYMPTOMS TABLE

Use the table below to help determine the cause of a problem. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.

STEERING LOCK SYSTEM FUNCTION:
Symptom	Suspected Area	See page
Steering wheel cannot be unlocked (the engine cannot be started).	Initialization	Click here
	Check for DTCs in the smart entry and start system.	Click here
	Check for DTCs in the engine immobiliser system.	Click here
	Check that the Lck/Unlck Rec item in the DATA LIST of the certification ECU (smart key ECU assembly) displays YES within 10 seconds after starting the engine. (If it displays NO, see "No steering unlock command" in this table.)	Click here
	Steering lock ECU power source circuit	Click here
	Check the input signal from the IGE terminal of the steering lock ECU.	Click here
	Replace the steering lock ECU.	Click here
Steering wheel cannot be unlocked (no steering unlock command).	Check that the S Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Check that the L Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Replace the certification ECU (smart key ECU assembly).	-
Steering wheel cannot be locked.	Check for DTCs in the smart entry and start system.	Click here
	Check for DTCs in the engine immobiliser system.	Click here
	With the engine switch off and the shift lever in the P position, open and close the drivers door. After that, check that the Lck/Unlck Rec item in the DATA LIST of the certification ECU (smart key ECU assembly) displays YES within 10 seconds. (If it displays NO, see "No steering lock command" in this table.)	Click here
	Steering lock ECU power source circuit	Click here
	Check the input signal from the IGE terminal of the steering lock ECU.	Click here
	Replace the steering lock ECU.	Click here
Steering wheel cannot be locked (no steering lock command).	Courtesy light switch circuit	Click here
	Check that the S Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Check that the L Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Replace the certification ECU (smart key ECU assembly).	-

SMART ENTRY AND START SYSTEM FUNCTION:
Symptom	Suspected Area	See page
Engine does not start.	Initialization	Click here
	Check for DTCs in the smart entry and start system.	Click here
	Check for DTCs in the engine immobiliser system.	Click here
	Check that the engine switch is turned on (IG).	-
	Check cranking operation. (If cranking operation is possible, see "Engine does not start due to the engine immobiliser" in this table.)	-
	Check the Shift P Sig item in the DATA LIST of the main body ECU and confirm that the shift signal is normal.	-
	Check whether the steering wheel is locked or unlocked. (If it is locked, see "Steering wheel cannot be unlocked" in the STEERING LOCK SYSTEM FUNCTION table.)	-
	Steering lock ECU power source circuit	-
	Check the output signal from the SLP terminal of the steering lock ECU.	Click here
	Check the output signal from the ST SW of the certification ECU (smart key ECU assembly) (DTC B2275).	Click here
	Replace the main body ECU.	-
Engine does not start due to the engine immobiliser.	Check that the L Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Check that the Start Rqst item in the DATA LIST of the certification ECU (smart key ECU assembly) displays YES. (If it displays NO, replace the certification ECU (smart key ECU assembly).)	-
	Check that the S Code Chk item in the DATA LIST of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box (immobiliser code ECU).)	-
	Replace the ID code box (immobiliser code ECU).	-