Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed in order of probability in the causes of the 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.
- Inspect the fuses and relays related the this system before inspecting the suspected areas below.
Steering Lock System
STEERING LOCK SYSTEM PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Steering wheel cannot be unlocked (the engine cannot be started). | Initialization | INITIALIZATION |
| Check for DTCs in the smart key system, (for Start Function) | DIAGNOSTIC TROUBLE CODE CHART | |
| Check for DTCs in the engine immobiliser system, (for w/ smart key system) | DIAGNOSTIC TROUBLE CODE CHART | |
| Check that the Lck/Unlck Rec 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.) | DTC CHECK / CLEAR | |
| Steering lock ECU power source circuit | POWER SOURCE CIRCUIT | |
| Check the input signal from the IGE terminal of the steering lock ECU. | STEERING LOCK MOTOR DRIVE POWER CIRCUIT | |
| Replace the steering lock ECU. | REMOVAL | |
| Steering wheel cannot be unlocked (no steering unlock command). | Check that the S Code Chk item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | - |
| Check that the L Code Chk item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | - | |
| Replace the certification ECU. | - | |
| Check for DTCs in the smart key system, (for Start Function) | DIAGNOSTIC TROUBLE CODE CHART | |
| Check for DTCs in the engine immobiliser system, (for w/ smart key system) | DIAGNOSTIC TROUBLE CODE CHART | |
| With the engine switch off and the shift 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 displays YES within 10 seconds. (If it displays NO, see "No steering unlock" command in this table.) | DTC CHECK / CLEAR | |
| Steering lock ECU power source circuit | POWER SOURCE CIRCUIT | |
| Check the input signal from the IGE terminal of the steering lock ECU. | STEERING LOCK MOTOR DRIVE POWER CIRCUIT | |
| Replace the steering lock ECU. | REMOVAL | |
| Steering wheel cannot be locked (no steering lock command). | Courtesy light switch circuit | DOOR COURTESY SWITCH CIRCUIT |
| Check that the S Code Chk item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | - | |
| Check that the L Code Chk item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | - | |
| Replace the certification ECU. | - |
Smart Key System
SMART KEY SYSTEM PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Engine does not start. | Initialization | INITIALIZATION |
| Check for DTCs in the smart key system, (for Start Function) | DIAGNOSTIC TROUBLE CODE CHART | |
| Check for DTCs in the engine immobiliser system, (for w/ smart key system) | DIAGNOSTIC TROUBLE CODE CHART | |
| 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 Shift P Sig 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 function table.) | - | |
| Steering lock ECU power source circuit | POWER SOURCE CIRCUIT | |
| Check the output from the SLP terminal of the steering lock ECU. | UNLOCK POSITION SENSOR SIGNAL CIRCUIT | |
| Check the output signal from the ST SW of the certification ECU (DTC B2275). | DTC B2275 STSW MONITOR MALFUNCTION | |
| 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 displays OK. (If it displays NG, replace the ID code box.) | - |
| Check that the Start Rqst item in the Data List of the certification ECU displays YES. (If it displays NO, replace the certification ECU.) | - | |
| Check that the S Code Chk item in the Data List of the certification ECU displays OK. (If it displays NG replace the ID code box.) | - | |
| Replace the ID code box. | - |