Lexus ES: Yaw Rate Sensor Circuit Intermittent (C00631F,C006396,C05201F)
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
These DTCs are stored when the skid control ECU (brake actuator assembly) receives a malfunction signal from the yaw rate and acceleration sensor (airbag ECU assembly).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C00631F | Yaw Rate Sensor Circuit Intermittent | When the voltage at terminal +BS is between 9.6 and 16.5 V, data malfunction signal is received from the yaw rate sensor (airbag ECU assembly) for 1 second or more. | Yaw rate sensor (airbag ECU assembly) |
| C006396 | Yaw Rate Sensor Component Internal Failure | With the +BS terminal voltage between 9.6 and 16.5 V, a yaw rate sensor internal malfunction signal is received from the yaw rate sensor (airbag ECU assembly). | Yaw rate sensor (airbag ECU assembly) |
| C05201F | Multi-axis Acceleration Sensor Module "A" Circuit Intermittent | When the voltage at terminal +BS is between 9.6 and 16.5 V, data malfunction signal is received from the acceleration sensor (airbag ECU assembly) for 10 seconds or more. | Acceleration sensor (airbag ECU assembly) |
CAUTION / NOTICE / HINT
NOTICE:
After replacing or reinstalling the yaw rate and acceleration sensor (airbag ECU assembly), perform acceleration sensor zero point calibration and store system information memorization after performing "Reset Memory".
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PROCEDURE
| 1. | REPLACE AIRBAG ECU ASSEMBLY |
(a) Replace the yaw rate and acceleration sensor (airbag ECU assembly).
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Components
COMPONENTS ILLUSTRATION *1 FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY - - Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf) N*m (kgf*cm, ft.*lbf): Specified torque *T1 Bolt color black: 8.0
Diagnosis System
DIAGNOSIS SYSTEM CHECK WARNING LIGHT NOTICE:
When there is a problem with the tire pressure warning system, the tire pressure warning light blinks at 0.5 second intervals, and illuminates after 1 minute.
When the malfunction has been corrected, the tire pressure warning light goes off.
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