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
PROBLEM SYMPTOMS REFERENCE
| 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). | DTC CHECK / CLEAR | |
| Check for DTCs in the engine immobilizer system, (w/ Smart key system) | DTC CHECK/CLEAR | |
| 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.) | DATA LIST / ACTIVE TEST | |
| Check the output from the IGE terminal of the steering lock ECU (steering lock actuator assembly). | STEERING LOCK MOTOR DRIVE POWER CIRCUIT | |
| Steering lock ECU (steering lock actuator assembly) power source circuit | POWER SOURCE CIRCUIT | |
| Replace the steering lock ECU (steering lock actuator assembly). | 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 (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST |
| Check that the L CODE MACH item in the Data List of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST | |
| Replace the certification ECU (smart key ECU assembly). | REMOVAL | |
| Steering wheel cannot be locked. | Check for DTCs in the smart key system (for start function) | DTC CHECK / CLEAR |
| Check for DTCs in the engine immobilizer system, (w/ Smart key system) | DTC CHECK/CLEAR | |
| With the engine switch off and the shift lever in P, 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.) | DATA LIST / ACTIVE TEST | |
| Check the output from the IGE terminal of the steering lock ECU (steering lock actuator assembly). | STEERING LOCK MOTOR DRIVE POWER CIRCUIT | |
| Steering lock ECU (steering lock actuator assembly) power source circuit | POWER SOURCE CIRCUIT | |
| Replace the certification ECU (smart key ECU assembly). | REMOVAL | |
| Steering wheel cannot be locked (no steering lock command). | Courtesy light switch circuit | DOOR COURTESY SWITCH CIRCUIT |
| Check that the S CODE MACH item in the Data List of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST | |
| Check that the L CODE MACH item in the Data List of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST | |
| Replace the certification ECU (smart key ECU assembly). | REMOVAL |
Push-Button Start Function
PROBLEM SYMPTOMS REFERENCE
| Symptom | Suspected Area | See |
|---|---|---|
| Engine does not start. | Initialization | INITIALIZATION |
| Check for DTCs in the smart key system (for start function). | DTC CHECK / CLEAR | |
| Check for DTCs in the engine immobilizer system, (w/ Smart key system) | DTC CHECK/CLEAR | |
| 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 immobilizer" in this table.) | - | |
| Check the SHIFT P SIG item in the Data List of the power management 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 (steering lock actuator assembly). | UNLOCK POSITION SENSOR SIGNAL CIRCUIT | |
| Check the output signal from the engine switch of the certification ECU (smart key ECU assembly). | DATA LIST / ACTIVE TEST | |
| Replace the power management control ECU. | POWER MANAGEMENT CONTROL ECU | |
| Engine does not start due to the engine immobilizer. | Check that the L CODE MACH item in the Data List of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST |
| Check that the ENG START REQ 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).) | DATA LIST / ACTIVE TEST | |
| Check that the S CODE MACH item in the Data List of the certification ECU (smart key ECU assembly) displays OK. (If it displays NG, replace the ID code box.) | DATA LIST / ACTIVE TEST | |
| Replace the ID code box. | - |