Fail-Safe Functions
- ASC-ECU constantly monitors the input and output signals.
- When a malfunction is determined by the diagnostic function, ASC-ECU illuminates the brake warning light, brake warning display, ABS warning light, ABS warning display, ASC warning light, ASC warning display, and ASC OFF light. At the same time, ASC-ECU prohibits the EBD, ABS, ASC, TCL, brake assist, HSA, ESS and FCM.NOTE: The brake warning light and brake warning display are used as the EBD control warning light.
- When the brake pad temperature (assumed) exceeds the specified value, the ASC OFF light flashes (2 Hz).
- Various controls are processed depending on the cause of malfunction as shown below.
ILLUMINATION CONDITION OF WARNING LIGHT AND DISPLAY IN CASE OF FAILURE
| Diagnostic trouble code No. | Item | Brake warning light, brake warning display | ABS warning light, ABS warning display | ASC warning light, ASC warning display | ASC OFF light ASC OFF display | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C100A | Abnormality in FL wheel speed sensor circuit | OFF (1) | ON (2) | ON | ON | |||||||||||||||
| C1015 | Abnormality in FR wheel speed sensor circuit | |||||||||||||||||||
| C1020 | Abnormality in RL wheel speed sensor circuit | |||||||||||||||||||
| C102B | Abnormality in RR wheel speed sensor circuit | |||||||||||||||||||
| C1011 | Abnormality in FL wheel speed sensor signal | OFF (1) | ON (2) | ON | ON | |||||||||||||||
| C101C | Abnormality in FR wheel speed sensor signal | |||||||||||||||||||
| C1027 | Abnormality in RL wheel speed sensor signal | |||||||||||||||||||
| C1032 | Abnormality in RR wheel speed sensor signal | |||||||||||||||||||
| C1014 | Mutual monitoring of FL wheel speed sensor | OFF (1) | ON (2) | ON | ON | |||||||||||||||
| C101F | Mutual monitoring of FR wheel speed sensor | |||||||||||||||||||
| C102A | Mutual monitoring of RL wheel speed sensor | |||||||||||||||||||
| C1035 | Mutual monitoring of RR wheel speed sensor | |||||||||||||||||||
| C1041 | Abnormality in periodical signal for FL wheel speed sensor | OFF (1) | ON (2) | ON | ON | |||||||||||||||
| C1042 | Abnormality in periodical signal for FR wheel speed sensor | |||||||||||||||||||
| C1043 | Abnormality in periodical signal for RL wheel speed sensor | |||||||||||||||||||
| C1044 | Abnormality in periodical signal for RR wheel speed sensor | |||||||||||||||||||
| C1046 | FL wheel speed sensor control phase time exceeded | OFF(1) | ON (2) | ON | ON | |||||||||||||||
| C1047 | FR wheel speed sensor control phase time exceeded | |||||||||||||||||||
| C1048 | RL wheel speed sensor control phase time exceeded | |||||||||||||||||||
| C1049 | RR wheel speed sensor control phase time exceeded | |||||||||||||||||||
| C104B | Abnormality in FL wheel inlet valve system | ON | ON | ON | ON | |||||||||||||||
| C104F | Abnormality in FR wheel inlet valve system | |||||||||||||||||||
| C1053 | Abnormality in RL wheel inlet valve system | |||||||||||||||||||
| C1057 | Abnormality in RR wheel inlet valve system | |||||||||||||||||||
| C105F | Abnormality in FL wheel outlet valve system | ON | ON | ON | ON | |||||||||||||||
| C1063 | Abnormality in FR wheel outlet valve system | |||||||||||||||||||
| C1067 | Abnormality in RL wheel outlet valve system | |||||||||||||||||||
| C105B | Abnormality in RR wheel outlet valve system | |||||||||||||||||||
| C1200 | Abnormality in FL/RR wheel cut valve system | ON | ON | ON | ON | |||||||||||||||
| C1204 | Abnormality in FR/RL wheel cut valve system | |||||||||||||||||||
| C1208 | Abnormality in FL/RR wheel suction valve system | |||||||||||||||||||
| C120C | Abnormality in FR/RL wheel suction valve system | |||||||||||||||||||
| C2104 | Faulty valve power supply circuit | ON | ON | ON | ON | |||||||||||||||
| C1073 | Faulty motor drive circuit | OFF | ON (2) | ON | ON | |||||||||||||||
| C2116 | Low or high power supply voltage in pump motor | OFF | ON (2) | ON | ON | |||||||||||||||
| C121D | Abnormality in brake fluid pressure sensor circuit | OFF | ON | ON | ON | |||||||||||||||
| C121E | Abnormality in brake fluid pressure sensor output signal | OFF | ON | ON | ON | |||||||||||||||
| C1000 | Abnormality in stoplight switch circuit | OFF | OFF | ON | ON | |||||||||||||||
| C123B | Prolonged operation of ASC | OFF | OFF | ON | ON | |||||||||||||||
| C2200 | Abnormality in ASC-ECU | ON | ON | ON | ON | |||||||||||||||
| C2101 | Abnormality in battery voltage (high voltage) | 18.0 ± 1.0 V or more | ON | ON | ON | ON | ||||||||||||||
| C1395 | Brake fluid charging incompletion | OFF | ABS warning light: Flashing (1 Hz) ABS warning display: ON | OFF | OFF | |||||||||||||||
| C121C | Torque request signal rejection | OFF | OFF | ON | ON | |||||||||||||||
| C2206 | Re-execution of variant coding | OFF | ON | ON | ON | |||||||||||||||
| C1210(5) | Longitudinal G sensor input circuit | Abnormality in longitudinal G-sensor output voltage | OFF | ON | ON | ON | ||||||||||||||
| C1242(5) | Longitudinal G sensor signal | Abnormality in longitudinal G-sensor output signal | OFF | ON | ON | ON | ||||||||||||||
| C123C | Sensor cluster malfunction | Abnormality in lateral G-sensor and yaw rate output value | OFF | OFF | ON | ON | ||||||||||||||
| C1392 | Incomplete learn (Longitudinal G) | ON | ON | ON | ON | |||||||||||||||
| C1393 | Incomplete learn neutral (Lateral G) | ON | ON | ON | ON | |||||||||||||||
| C2204 | Sensor cluster internal error | OFF | OFF(4) ON(5), (7) | ON | ON | |||||||||||||||
| C123A | Abnormality in sensor calibration | OFF | OFF(4) ON(5), (7) | ON | ON | |||||||||||||||
| C1219 | Abnormality in steering wheel sensor signal | OFF | OFF | ON | ON | |||||||||||||||
| C121A | Abnormality in steering wheel sensor initialization | Steering wheel sensor neutral point not learned | OFF | ABS warning light: Flashing (2 Hz) ABS warning display: ON | ON | ON | ||||||||||||||
| C2205 | Internal abnormality in steering wheel sensor | OFF | OFF | ON | ON | |||||||||||||||
| C2002 | Valve calibration error | ON | ON | ON | ON | |||||||||||||||
| C1608 | Implausible diagnosis data | OFF | OFF | OFF | OFF | |||||||||||||||
| C1707 | Implausible coding data | OFF | ON(7) | OFF | ON(7) | |||||||||||||||
| C1805 | FCM/LDW/AHB malfunction | OFF | OFF | ON | OFF | |||||||||||||||
| C1807 | FCM/LDW/AHB target deceleration signal | OFF | OFF | ON | OFF | |||||||||||||||
| U0100 | Engine time-out error | OFF | OFF | OFF | OFF | |||||||||||||||
| U0101 | CVT time-out error | OFF | OFF | OFF | OFF | |||||||||||||||
| U0114(5) | AWD-ECU time-out error | OFF | OFF | OFF | OFF | |||||||||||||||
| U0126 | Steering wheel sensor time-out error | OFF | OFF | OFF | OFF | |||||||||||||||
| U0141 | ETACS time-out error | OFF | OFF | ON | OFF | |||||||||||||||
| U0401 | Engine malfunction detected | OFF | OFF | ON | ON | |||||||||||||||
| U0428 | Steering wheel sensor CRC, message error | OFF | OFF | ON | ON | |||||||||||||||
| U1015 | FCM/LDW/AHB Parity/Toggle bit error | OFF | OFF | ON | OFF | |||||||||||||||
| U1073 | Bus-off | OFF | OFF | ON | ON | |||||||||||||||
| U1195 | Coding not completed | OFF | ON | ON | ON | |||||||||||||||
| U1197 | Coding data unavailable | OFF | ON | ON | ON | |||||||||||||||
| U15A5 | FCM/LDW/AHB CAN timeout | OFF | OFF | ON | OFF | |||||||||||||||
|
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UNDER EBD, ABS, ASC, TCL, BRAKE ASSIST, HSA, ESS AND FCM IN CASE OF FAILURE
| Diagnostic trouble code No. | Item | EBD | ABS | ASC | TCL | Brake assist | HSA | ESS | FCM | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C100A | FL wheel speed sensor circuit | Enabled(1) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1015 | FR wheel speed sensor circuit | ||||||||||||||||||||
| C1020 | RL wheel speed sensor circuit | ||||||||||||||||||||
| C102B | RR wheel speed sensor circuit | ||||||||||||||||||||
| C1011 | FL wheel speed sensor signal | Enabled(1) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C101C | FR wheel speed sensor signal | ||||||||||||||||||||
| C1027 | RL wheel speed sensor signal | ||||||||||||||||||||
| C1032 | RR wheel speed sensor signal | ||||||||||||||||||||
| C1014 | FL wheel speed sensor performance | Enabled(1) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C101F | FR wheel speed sensor performance | ||||||||||||||||||||
| C102A | RL wheel speed sensor performance | ||||||||||||||||||||
| C1035 | RR wheel speed sensor performance | ||||||||||||||||||||
| C1041 | FL wheel speed tone performance | Enabled(1) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1042 | FR wheel speed tone performance | ||||||||||||||||||||
| C1043 | RL wheel speed tone performance | ||||||||||||||||||||
| C1044 | RR wheel speed tone performance | ||||||||||||||||||||
| C1046 | FL wheel speed sensor phase | Enabled(1) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1047 | FR wheel speed sensor phase | ||||||||||||||||||||
| C1048 | RL wheel speed sensor phase | ||||||||||||||||||||
| C1049 | RR wheel speed sensor phase | ||||||||||||||||||||
| C104B | FL inlet valve | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C104F | FR inlet valve | ||||||||||||||||||||
| C1053 | RL inlet valve | ||||||||||||||||||||
| C1057 | RR inlet valve | ||||||||||||||||||||
| C105F | FL outlet valve | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1063 | FR outlet valve | ||||||||||||||||||||
| C1067 | RL outlet valve | ||||||||||||||||||||
| C105B | RR outlet valve | ||||||||||||||||||||
| C1200 | FL-RR cut valve | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1204 | FR-RL cut valve | ||||||||||||||||||||
| C1208 | FL-RR suction valve | ||||||||||||||||||||
| C120C | FR-RL suction valve | ||||||||||||||||||||
| C2104 | Valve power supply circuit | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1073 | Motor drive circuit | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C2116 | Pump motor voltage low | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C121D | Brake fluid pressure sensor circuit (Only the brake assist is defective.) | Enabled | Enabled | Enabled | Enabled | Prohibited | Enabled | Enabled | Enabled | ||||||||||||
| (Other than above) | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | |||||||||||||
| C121E | Brake fluid pressure sensor | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1000 | Brake SW (stuck) | Enabled | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C123B | System control too long | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C2200 | ECU internal error | Prohibited(4) | Prohibited(5) | Prohibited | Prohibited | Prohibited(5) | Prohibited | Prohibited | Prohibited | ||||||||||||
| C2101 | Power supply high voltage (18.0 ± 1.0 V or more) | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1395 | Incomplete Brake fluid filling | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | ||||||||||||
| C121C | Torque request signal denied | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C2206 | Re-execution of variant coding | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1210 | Longitudinal G sensor input circuit (Abnormality in longitudinal G-sen-sor output voltage) | Enabled | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Prohibited | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | ||||||||||||
| C1242 | Longitudinal G sensor signal (Abnormality in longitudinal G-sensor output signal) | Enabled | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Prohibited | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | ||||||||||||
| C123C | Sensor cluster malfunction (Abnormality in lateral G-sensor and yaw rate output value) | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C1392 | Incomplete learn (Longitudinal G) | Enabled | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Prohibited | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | ||||||||||||
| C1393 | Incomplete learn neutral (Lateral G) | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C2204 | Sensor cluster internal error | Enabled | Enabled(2), Prohibited(3), (6) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Prohibited | Enabled(2), Prohibited(3) | Prohibited | ||||||||||||
| C123A | Abnormality in sensor calibration | Enabled | Enabled(2), Prohibited(3), (6) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Enabled(2), Prohibited(3) | Prohibited | Enabled(2), Prohibited(3) | Prohibited | ||||||||||||
| C1219 | Steering angle sensor signal | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C121A | Abnormality in steering wheel sensor initialization (Steering wheel sensor neutral point not learned) | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C2205 | Internal malfunction of steering wheel sensor | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| C2002 | Valve calibration not completed | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| C1608 | Implausible diagnosis data | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | ||||||||||||
| C1707 | Implausible coding data | Enabled | Prohibited(6) | Prohibited(6) | Prohibited(6) | Prohibited(6) | Prohibited | Prohibited(6) | Prohibited(6) | ||||||||||||
| C1805 | FCM/LDW/A HB malfunction | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Prohibited | ||||||||||||
| C1807 | FCM/LDW/A HB target deceleration signal | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Prohibited | ||||||||||||
| U0100 | Engine CAN timeout | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U0101 | T/M CAN timeout | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U0114(3) | AWD CAN timeout | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U0126 | SAS CAN timeout | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U0141 | ETACS CAN timeout | Enabled | Enabled | Prohibited(6) | Prohibited(6) | Prohibited(6) | Prohibited(6) | Prohibited(6) | Prohibited(6) | ||||||||||||
| U0401 | Engine (CAN message) | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U0428 | SAS (CAN message) | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Enabled | Prohibited | ||||||||||||
| U1015 | FCM/LDW/A HB Parity/Toggle bit error | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Prohibited | ||||||||||||
| U1073 | Bus-off | Enabled | Enabled | Prohibited | Prohibited | Enabled | Prohibited | Prohibited | Prohibited | ||||||||||||
| U1195 | Coding not completed | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| U1197 | Coding data unavailable | Enabled | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | Prohibited | ||||||||||||
| U15A5 | FCM/LDW/A HB CAN timeout | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Enabled | Prohibited | ||||||||||||
|
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