Lexus NX: Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via the CAN communication system.
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
| DTC No. | Detection Item | INF Code | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|---|
| C1442 | Invalid Data Received from Deceleration Sensor | 572 | With terminal IG1 voltage between 9.5 and 17.4 V, an invalid data signal is received from the acceleration sensor for 10 seconds or more. | Acceleration sensor (Airbag ECU assembly) | - |
| C1443 | Invalid Data Received from Yaw Rate Sensor | 715 | With terminal IG1 voltage between 9.5 and 17.4 V, an invalid data signal is received from the yaw rate sensor for 10 seconds or more. | Yaw rate sensor (Airbag ECU assembly) | - |
CAUTION / NOTICE / HINT
NOTICE:
When replacing the yaw rate and acceleration sensor (airbag ECU assembly), perform zero point calibration.
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PROCEDURE
| 1. | CHECK DTC |
(a) Clear the DTCs.
Click here
(b) Turn the power switch off.
(c) Check if the same DTC is output.
Click here
| Result | Proceed to |
|---|---|
| DTCs C1442 and C1443 are not output. | A |
| DTCs C1442 and/or C1443 are output. | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE AIRBAG ECU ASSEMBLY |
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Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. REMOVE ROOF RACK ASSEMBLY (w/ Roof Rack) Click here 2. REMOVE ROOF DRIP SIDE FINISH MOULDING LH (w/ Roof Rack) (a) Put protective tape around
Installation
INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. INSTALL FRONT SEAT ASSEMBLY LH (a) Place the front seat asse
