Engine Control System: Fail-Safe
Description
When a DTC is detected, ECM executes a mode (in the Fail-safe mode) applicable to the DTC. The fail-safe mode has the preset traveling control mode (accelerator angle variation and engine output limit) and device fix mode.
| Fail-Safe mode | Vehicle behavior | Fail-Safe pattern | |
|---|---|---|---|
| Traveling control mode | Accelerator angle variation control | ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
|
A |
| Engine output control | ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction.
NOTE:
|
B | |
ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction.
NOTE:
|
C | ||
| Device fix mode |
|
D | |
| Combustion control mode | Stratified charge combustion control at starting | No stratified charge combustion at starting (cold start). | E |
| Idle speed control | Stops feedback control of idle speed and controls with specified speed. | F | |
| Recovery speed control at decelerating | Stops recovery speed control by the fuel cut at decelerating and controls with specified speed. | ||
| Idle neutral control | Stops idle neutral control. | ||
| Ignition timing correction control | Partially controls ignition timing control. | G | |
| Retardation control | Controls ignition timing delay control in the intermediate water temperature range. | ||
| Electric throttle control cancel mode | ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. | H | |
Fail-Safe List
| DTC No. | Detected items | Vehicle behavior | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pattern | Others | ||||||||||
| A | B | C | D | E | F | G | H | ||||
| C053C | 00 | Vehicle speed sensor | x | - | - | - | x | - | - | - | - |
| P0010, P0020 | 00 | Electric intake valve timing control module | - | - | - | x | x | x | - | - | - |
| P0011, P0012, P0021, P0022 | 00 | Intake valve timing control | - | - | - | x | - | - | - | - | - |
| P0014, P0015, P0019, P0024, P0025 | 00 | Exhaust valve timing control | - | - | - | x | - | - | - | - | - |
| P0017 | 00 | Exhaust valve timing control | - | - | - | x | - | - | - | - | - |
| P0078, P0084 | 00 | Exhaust valve timing control solenoid valve | - | - | - | x | - | - | - | - | - |
| P0087, P0088, P0090 | 00 | Fuel rail pressure control | x | - | - | x | x | - | - | - | - |
| P0101, P0102, P0103 | 00 | Mass air flow sensor | x | x | - | x | x | x | x | - | - |
| P0107, P0108 | 00 | Barometric pressure sensor | x | x | - | x | - | - | - | - | - |
| P0117, P0118 | 00 | Engine coolant temperature sensor | - | - | - | - | x | x | - | - | - |
| P0122, P0123, P0222, P0223, P2135 | 00 | Throttle position sensor | - | - | - | x | - | - | - | - | - |
| P0171, P0172, P0174, P0175 | 00 | Fuel injection system | x | - | - | - | x | x | - | - | - |
| P0190 | 00 | Fuel rail pressure sensor | x | - | - | x | x | x | - | - | - |
| P0191, P0192, P0193 | 00 | x | - | - | - | x | - | - | - | - | |
| P0201, P0202, P0203, P0204, P0205, P0206 | 00 | Fuel injector | x | - | - | x | x | - | - | - | - |
| P0300, P0301, P0302, P0303, P0304, P0305, P0306 | 00 | Misfire | x | - | - | - | x | x | - | - | - |
| P0335 | 00 | Crankshaft position sensor | - | - | - | x | x | x | - | - | - |
| P0340, P0345 | 00 | Intake camshaft position sensor | - | - | - | x | x | x | - | - | - |
| P0365, P0390 | 00 | Exhaust camshaft position sensor | - | - | - | x | - | - | - | - | - |
| P0500 | 00 | Vehicle speed sensor | x | - | - | - | x | x | - | - | - |
| P050A | 00 | Cold start control | x | - | - | - | x | - | - | - | |
| P0604, P0605, P0606, P060B, P061B | 00 | ECM | - | - | - | x | - | - | - | x | - |
| P0607 | 00 | x | x | - | - | - | - | - | - | ASCD operation may be deactivated. | |
| P060A | 00 | x | x | - | x | - | - | - | x | ASCD operation may be deactivated. | |
| P062B, P062D, P062E | 00 | x | - | - | x | x | - | - | - | - | |
| P0641 | 00 | Sensor power supply | - | - | - | x | x | x | - | - | - |
| P0643 | 00 | - | - | - | x | - | - | - | x | - | |
| P1197 | 00 | Out of gas | - | - | - | x | - | - | - | - | - |
| P119A, P119B, P119C | 00 | Fuel pressure sensor | x | - | - | - | x | - | - | - | - |
| P2100, P2103 | 00 | Throttle control motor relay | - | - | - | x | - | - | - | x | - |
| P2101 | 00 | Electric throttle control | - | - | - | x | - | - | - | x | - |
| P2118 | 00 | Throttle control motor | - | - | - | x | - | - | - | x | - |
| P2119 | 00 | Electric throttle control actuator | x | x | - | x | - | - | - | x | - |
| P2122, P2123, P2127, P2128, P2138 | 00 | Accelerator pedal position sensor | - | - | - | x | - | - | - | - | - |
| P23E9, P23EA, P2614, P2615 | 00 | Intake camshaft position sensor (electric intake valve timing control signal) | - | - | - | x | x | x | - | - | - |
| P23EB, P2616 | 00 | - | - | - | x | x | - | - | - | - | |
| P2617, P2618 | 00 | Crankshaft position sensor (electric intake valve timing control signal) | - | - | - | x | x | - | - | - | - |
| P2619 | 00 | - | - | - | x | x | x | - | - | - | |
| P25DF, P25E8 | 00 | Electric intake valve timing control actuator | - | - | - | x | x | - | - | - | ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
NOTE:
|
| P34AC, P34AD, P34B1, P34C4, P34C5 | 00 | - | |||||||||
| P34C8 | 00 | Electric intake valve timing control module | - | - | - | x | x | x | - | - | - |
| U0122 | 00 | CAN communication line | x | - | - | - | x | - | - | - | - |
| U012E, U042F | 00 | Engine communication | - | - | - | x | x | x | - | - | - |
STOP/START SYSTEM
When ECM detects error, ECM detects DTC, prohibits the start/stop system operation, and display the Stop/Start warning indicator. When ECM detects error while operating the stop/start system, ECM restarts the engine.