Lexus NX: Front Left Sensor Malfunction (C1AE1)
DESCRIPTION
The front corner ultrasonic sensor (FL sensor) is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sensor (FL sensor). If the front corner ultrasonic sensor (FL sensor) has an open circuit or other malfunction, it will not function normally.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE1 | Front Left Sensor Malfunction | A malfunction of the front corner ultrasonic sensor (FL sensor) |
|
CAUTION / NOTICE / HINT
NOTICE:
If DTCs are output after repairs, turn the power switch on (IG) and the intuitive parking assist system on. Then clear the DTCs.
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PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Check for DTCs.
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| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| Only DTC C1AE1 is output | B |
| DTC C1AE1 and C1AEC are output | C |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| C | | GO TO DTC (C1AEC) |
|
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| 2. | REPLACE FRONT CORNER ULTRASONIC SENSOR (FL SENSOR) |
(a) Replace the front corner ultrasonic sensor (FL sensor) with a known good one.
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HINT:
All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.
|
| 3. | CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| DTC C1AE1 is output | B |
| A | | END (FRONT CORNER ULTRASONIC SENSOR [FL SENSOR] WAS DEFECTIVE) |
| B | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
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Front Right Center Sensor (C1AE3)
DESCRIPTION The front center ultrasonic sensor (FRC sensor) is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front center ultra
Front Right Sensor Malfunction (C1AE4)
DESCRIPTION The front corner ultrasonic sensor (FR sensor) is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultras
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Inspection
INSPECTION PROCEDURE 1. INSPECT HEADLIGHT ASSEMBLY LH (a) Apply battery voltage to the connector and check the light illumination condition. OK: Battery Connection Specified Condition Positive (+) → 3 (LO) Negative (-) → 4 (E) Headlight illuminates Positive (+) → 2 (SOL) Neg
Installation
INSTALLATION CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. INSTALL NO. 1 SEAT LEG ASSEMBLY (a) Attach the 2 guides to temporarily install the No. 1 seat leg assembly. (b) Tighten the 8 bolts in the order indicated
