Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Torque Sensor Zero Point Adjustment Undone (C1515)
DESCRIPTION
This DTC does not indicate a malfunction. The power steering ECU assembly stores this DTC when it determines that torque sensor zero point calibration has not been performed.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition | Note |
|---|---|---|---|---|---|---|
| C1515 | Torque Sensor Zero Point Adjustment Undone | This DTC is stored when torque sensor zero point calibration has not been performed. | - | EPS warning light: Comes on | Zero point calibration is performed or the power switch is turned on (IG) again | There is no malfunction if this DTC is not output again after performing zero point calibration. |
CAUTION / NOTICE / HINT
NOTICE:
-
If the electric power steering column sub-assembly has been replaced, perform torque sensor zero point calibration.
Click here
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-
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Calibrate the torque sensor zero point. (Step 1)
Click here
| Tester Display |
|---|
| Torque Sensor Adjustment |
(b) Check for DTCs. (Step 2)
Click here
HINT:
If DTCs are output, perform steps (1) and (2) two more times.
| Result | Proceed to |
|---|---|
| DTCs are still output after performing steering zero point calibration 3 times. | A |
| Normal system code is output. | B |
| B | .gif) | END |
|
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| 2. | REPLACE POWER STEERING ECU ASSEMBLY |
(a) Replace the power steering ECU assembly.
Click here
|
| 3. | CHECK FOR DTC |
(a) Calibrate the torque sensor zero point. (Step 1)
Click here
| Tester Display |
|---|
| Torque Sensor Adjustment |
(b) Check for DTCs. (Step 2)
Click here
HINT:
If DTCs are output, perform steps (1) and (2) two more times.
| Result | Proceed to |
|---|---|
| DTCs are still output after performing steering zero point calibration 3 times. | A |
| Normal system code is output. | B |
| A | | REPLACE ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY |
| B | | END |
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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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