Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Master Module Horizontal Axis Misalignment (C1AC1)
DESCRIPTION
This DTC is stored when the angle of the blind spot monitor sensor LH deviates more than the allowable range from the horizontal axis.
HINT:
- If a drum tester such as a speedometer tester, brake/speedometer combination tester or chassis dynamometer is used with the blind spot monitor system on, the blind spot monitor sensor may store this DTC by mistake.
- When mud, snow, ice, a sticker, etc. is covering the sensor or its surrounding area on the rear bumper, the blind spot monitor sensor may store this DTC by mistake.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AC1 | Master Module Horizontal Axis Misalignment | When the blind spot monitor sensor deviates 5 degrees or more from the horizontal axis when the system is activated | Blind spot monitor sensor LH |
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
PROCEDURE
| 1. | CHECK VEHICLE CONDITION |
(a) Check the condition of the rear bumper around the blind spot monitor sensors.
HINT:
When mud, snow, ice, a sticker, etc. is covering the sensor or its surrounding area on the rear bumper, the blind spot monitor sensor may store this DTC by mistake.
| Result | Proceed to |
|---|---|
| A sticker, mud, snow, ice, etc. is covering the sensor or surrounding area on the rear bumper. | A |
| There are scratches or dents on the rear bumper around the sensors. | B |
| No abnormalities. |
| B | .gif) | GO TO STEP 3 |
|
| 2. | PERFORM BEAM AXIS CONFIRMATION |
(a) Clean the rear bumper.
(b) Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.
Click here .gif)
| Tester Display |
|---|
| BSM Master Beam Axis Display |
| Tester Display |
|---|
| BSM Master Beam Axis Adjustment |
| OK | | END |
| NG | | REPLACE BLIND SPOT MONITOR SENSOR LH |
| 3. | CHECK INSTALLATION CONDITION |
(a) Check the installation condition of the blind spot monitor sensor LH.
Click here
HINT:
Take the appropriate action in accordance with the result.
|
| 4. | PERFORM BEAM AXIS CONFIRMATION |
(a) Install the rear bumper.
REAR BUMPER (w/o Rear No. 2 Seat): Click here
REAR BUMPER (w/ Rear No. 2 Seat): Click here
(b) Perform Blind Spot Monitor Beam Axis Confirmation using the Techstream.
Click here
| Tester Display |
|---|
| BSM Master Beam Axis Display |
| Tester Display |
|---|
| BSM Master Beam Axis Adjustment |
| OK | | END |
| NG | | REPLACE BLIND SPOT MONITOR SENSOR LH |
Short to +B in Buzzer (C1ABD,C1ABE)
DESCRIPTION
DTC C1ABD is stored when the blind spot monitor sensor RH detects a short to +B in the RCTA buzzer (blind spot monitor buzzer) circuit.
DTC C1ABE is stored when the blind spot monitor ...
Slave Module Horizontal Axis Misalignment (C1AC2)
DESCRIPTION This DTC is stored when the angle of the blind spot monitor sensor RH deviates more than the allowable range from the horizontal axis. HINT:
If a drum tester such as a speedometer teste ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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