FAIL-SAFE CHART
If any of the following codes are recorded, the ECM enters fail-safe mode.
| DTC No. | Fail-Safe Operation | Fail-Safe Deactivation Conditions |
|---|---|---|
| P0031 P0032 P0037 P0038 | Turn off heater | Ignition switch OFF |
| P0100 P0102 P0103 | Ignition timing is calculated from engine speed and throttle angle | "Pass" condition detected |
| P0110 P0112 P0113 | Intake air temperature is fixed at 20°C (68°F) | "Pass" condition detected |
| P0115 P0116 P0117 P0118 | Engine coolant temperature is fixed at 80°C (176°F) | "Pass" condition detected |
| P0120 P0121 P0122 P0123 P0220 P0222 P0223 P0604 P0606 P0607 P0657 P2102 P2103 P2111 P2112 P2118 P2119 P2135 | If the Electronic Throttle Control System (ETCS) has a malfunction, the ECM cuts off current to the throttle control motor. The throttle control valve returns to a predetermined opening angle (approximately 16°) by the force of the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to enable the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and slowly, the vehicle can be driven slowly, If the accelerator pedal is depressed quickly, the vehicle may speed up and slow down erratically. | "Pass" condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop and the system will return to normal condition. |
| P0325 P0327 P0328 | Maximum timing retardation | Ignition switch OFF |
| P0351 P0352 P0353 P0354 | Fuel is cut | "Pass" condition detected |
| P2120 P2121 P2122 P2123 P2125 P2127 P2128 P2138 | The accelerator pedal position sensor has two (main and sub) sensor circuits. If a malfunction occurs in either of the sensor circuits, the ECM detects the abnormal signal voltage difference between the two sensor circuits and switches to limp mode. In limp mode, the remaining circuit is used to calculate the accelerator pedal opening to allow the vehicle to continue driving. If both circuits malfunction, the ECM regards the opening angle of the accelerator pedal to be fully closed. In this case, the throttle valve will remain closed as if the engine is idling. | "Pass" condition is detected and then the ignition switch is turned OFF, the fail-safe operation will stop and the system will return to normal condition. |
FAIL-SAFE CHART
Scheme 329
Scheme 330
Scheme 331
Scheme 332
Scheme 333
Scheme 334
- DATA LIST HINT: Using the hand-held tester DATA LIST allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshooting is one way to shorten labor time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on the these reference values when deciding whether a part is faulty or not. Warm up the engine. Turn the ignition switch OFF. Connect the hand-held tester or the OBD II scan tool to the DLC3. Turn the ignition switch ON. Turn ON the hand-held tester or the OBD II scan tool. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST. According to the display on tester, read the "DATA LIST".
- ACTIVE TEST HINT: Performing the hand-held tester ACTIVE LIST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE LIST early in troubleshooting is one way to shorten labor time. The DATA LIST can be displayed during the ACTIVE TEST. Warm up the engine. Turn the ignition switch OFF. Connect the hand-held tester or the OBD II scan tool to the DLC3. Turn the ignition switch ON. Turn ON the hand-held tester or the OBD II scan tool. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST. According to the display on tester, perform the "ACTIVE TEST.