Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential 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 to this system before inspecting the suspected areas below.
STEERING LOCK FUNCTION
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Steering wheel cannot be unlocked (the engine cannot be started). | Initialization | Refer to INITIALIZATION |
| Check for DTCs in the smart access system with push-button start. | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| Check for DTCs in the engine immobiliser system. | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| Check that the LCK/UNLOCK REC item in the Data List of the certification ECU displays YES within 10 seconds after starting the engine. (I it displays NO, see "No steering unlock command" in this table.) | Refer to DATA LIST / ACTIVE TEST | |
| Check the output from the IGE terminal of the steering lock ECU. | Refer to Steering Lock Motor Drive Power Circuit | |
| Steering lock ECU power source circuit. | Refer to Power Source Circuit | |
| Replace the steering lock ECU. | Refer to DISASSEMBLY | |
| Steering wheel cannot be unlocked (no steering unlock command). | Check that the S CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST |
| Check that the L CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST | |
| Replace the certification ECU. | - | |
| Steering wheel cannot be locked. | Check for DTCs in the smart access system push-button start. | Refer to DIAGNOSTIC TROUBLE CODE CHART |
| Check for DTCs in the engine immobiliser system. | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| With the engine switch off and the shift lever in P, open and close the driver door. After that, check that the LCK/UNLOCK REC 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 | |
| Check the output from the IGE terminal of the steering lock ECU. | Refer to Steering Lock Motor Drive Power Circuit | |
| Steering lock ECU power source circuit. | Refer to Power Source Circuit | |
| Replace the certification ECU. | - | |
| Steering wheel cannot be locked (no steering lock command). | Courtesy light switch circuit | Refer to Door Courtesy Switch Circuit |
| Check that the S CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST | |
| Check that the L CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST | |
| Replace the certification ECU. | - |
PUSH BUTTON START FUNCTION
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Engine does not start. | Initialization | Refer to INITIALIZATION |
| Check for DTCs in the smart access system with push-button start. | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| Check for DTCs in the engine immobiliser system. | Refer to DIAGNOSTIC TROUBLE CODE CHART | |
| Check that the engine switch is turned on. | - | |
| Check cranking operation. (If cranking operation is possible, see "Engine dose not start due to the engine immobiliser" in this table.) | - | |
| Check the SHIFT P SIG item in the Data List of the power source control 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.) | - | |
| Check the output from the SLP1 terminal of the steering lock ECU. | Refer to Unlock Position Sensor Signal Circuit | |
| Check the output signal from the engine switch of the certification ECU (DTC B2275). | Refer to DTC B2275: STSW Monitor Malfunction | |
| Replace the power source control ECU. | - | |
| Engine does not start due to the engine immobiliser. | Check that the L CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST |
| Check that the ENG START REQ item in the Data List of the certification ECU displays YES. (If it displays NO, replace the certification ECU.) | Refer to DATA LIST / ACTIVE TEST | |
| Check that the S CODE MACH item in the Data List of the certification ECU displays OK. (If it displays NG, replace the ID code box.) | Refer to DATA LIST / ACTIVE TEST | |
| Replace the ID code box. | - |