Lexus ES: Rear Left Sensor Malfunction (C1AE6)
DESCRIPTION
The rear corner ultrasonic sensor LH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor LH. If the rear corner ultrasonic sensor LH has an open circuit or other malfunction, it will not function normally.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AE6 | Rear Left Sensor Malfunction | A malfunction of the rear corner ultrasonic sensor LH. |
|
CAUTION / NOTICE / HINT
NOTICE:
If DTCs are output after repairs, turn the power switch on (IG) and the parking support alert system on. Then clear the DTCs.
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PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Check for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| Result | Proceed to |
|---|---|
| Only DTC C1AE6 is output | A |
| DTC C1AE6 and C1AED are output | B |
| No DTCs are output | C |
| B | .gif) | GO TO DTC (C1AED) |
| C | | USE SIMULATION METHOD TO CHECK |
|
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| 2. | REPLACE REAR CORNER ULTRASONIC SENSOR LH |
(a) Replace the rear corner ultrasonic sensor LH with new or 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.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(b) Check for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| Result | Proceed to |
|---|---|
| DTC C1AE6 is output | A |
| No DTCs are output | B |
| A | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| B | | END (REAR LEFT CORNER SENSOR WAS DEFECTIVE) |
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DESCRIPTION The rear center ultrasonic sensor LH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear center ultrasonic sensor
Rear Right Center Sensor Malfunction (C1AE8)
DESCRIPTION The rear center ultrasonic sensor RH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear center ultrasonic sensor
Rear Right Sensor Malfunction (C1AE9)
DESCRIPTION The rear corner ultrasonic sensor RH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor
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Left Headlight ECU Variation Error (B2456)
DESCRIPTION This DTC is stored if the headlight ECU sub-assembly LH for another destination is installed. AFS*1 DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from B2456 Left Headlight ECU Variation Error
The power switch is on (IG).
Vehicle specif
Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
This procedure includes the installation of small-head bolts. Refer to Small-Head
Bolts of Basic Repair Hint to identify the small-head bolts.
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PROCEDURE
1. INSTALL SPARK PLUG
HINT:
Perform "Inspection After Repair" after r
