DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).
If an internal malfunction signal from the yaw rate and acceleration sensor (airbag ECU assembly) is detected by the skid control ECU (brake booster with master cylinder assembly), DTC C1419 and/or DTC C1435 is stored.
DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | MIL | Note |
---|---|---|---|---|---|---|
C1419 | Deceleration Sensor Internal Circuit | 1137 | Acceleration sensor internal malfunction signal is detected. | Acceleration sensor (airbag ECU assembly) | Comes on |
|
C1435 | Yaw Rate Sensor Internal Circuit | 711 712 | Yaw rate sensor internal malfunction signal is detected. | Yaw rate sensor (airbag ECU assembly) | Does not come on | VSC DTC |
MONITOR DESCRIPTION
MONITOR STRATEGY
C0520 (Case 3) Related DTCs | C0520 (Case 3): Acceleration sensor internal malfunction |
Required Sensors/Components(Main) | Acceleration sensor (airbag ECU assembly) |
Required Sensors/Components(Related) | Skid control ECU (brake booster with master cylinder assembly) |
Frequency of Operation | Continuous |
Duration | - |
MIL Operation | Immediately |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
C0520 (Case 3) Monitor runs whenever the following DTCs are not stored | None |
Lost communication with yaw rate and acceleration sensor (airbag ECU assembly) | Not detected |
TYPICAL MALFUNCTION THRESHOLDS
C0520 (Case 3) Either of the following conditions is met | - |
Acceleration sensor 1 (longitudinal G) error (CAN communication data) | "1" (abnormality) |
Acceleration sensor 2 (lateral G) error (CAN communication data) | "1" (abnormality) |
COMPONENT OPERATING RANGE
C0520 (Case 3) All of the following conditions are met | - |
Lost communication with yaw rate and acceleration sensor (airbag ECU assembly) | Not detected |
Yaw rate and acceleration sensor power supply voltage (IG) invalidation/validation (CAN communication data) | "0" (valid) |
Acceleration sensor 1 (longitudinal G) error (CAN communication data) | "0" (no abnormality) |
Acceleration sensor 2 (lateral G) error (CAN communication data) | "0" (no abnormality) |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
HINT:
CAUTION / NOTICE / HINT
NOTICE:
After replacing or reinstalling the yaw rate and acceleration sensor (airbag ECU assembly), perform yaw rate and acceleration sensor zero point calibration after clearing previously calibrated data.
Click here
PROCEDURE
1. | REPLACE AIRBAG ECU ASSEMBLY |
(a) Replace the yaw rate and acceleration sensor (airbag ECU assembly).
Click here
NEXT | END |