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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Inspection
INSPECTION PROCEDURE 1. INSPECT FLOW SHUTTING VALVE (NO. 1 WATER BY-PASS HOSE) (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 22 to 28 Ω If the result is not as spec
Maintenance requirements
To ensure safe and economical driving,
day-to-day care and regular
maintenance are essential. It is the
owner's responsibility to perform
regular checks. Lexus recommends
the following maintenance:
■Repair and replacement
It is recommended that genuine Lexus parts
be used for repairs to en
