Lexus NX: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Power Steering System| DTC No. | Detection Item | Warning Indicate | Return-to-normal Condition | Note | Link |
|---|---|---|---|---|---|
| C1511 | Torque Sensor1 | On | Power switch on (IG) again | - | |
| C1512 | Torque Sensor2 | On | Power switch on (IG) again | - | |
| C1513 | Torque Sensor Deviation Excessive | On | Power switch on (IG) again | - | |
| C1514 | Torque Sensor Power Supply Voltage | On | Power switch on (IG) again | - | |
| C1515 | Torque Sensor Zero Point Adjustment Undone | On | Zero point calibration occurs | There is no malfunction if this DTC is not output again after performing zero point calibration. | |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete | On | Clear DTC | There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and performing zero point calibration. | |
| C1517 | Torque Hold | On | Power switch on (IG) again | - | |
| C1521 | Short in Motor Circuit | On | Power switch on (IG) again | - | |
| C1522 | Power Supply Sensor | On | Power switch on (IG) again | - | |
| C1523 | Current Deviation Excessive | On | Power switch on (IG) again | - | |
| C1524 | Motor Terminal Voltage | On | Power switch on (IG) again | - | |
| C1528 | Motor Rotation Angle Sensor | On | Power switch on (IG) again | - | |
| C1531 | ECU Malfunction | On | Power switch on (IG) again | - | |
| C1532 | ECU Malfunction | On | Power switch on (IG) again | - | |
| C1533 | Temperature Sensor Circuit is Low or High | Off | After normal confirmation | - | |
| C1534 | EEPROM | Torque sensor zero point adjustment is set to the default value and control is continued. In this case, the warning light illuminates. | Power switch on (IG) again | - | |
| C1541 | Vehicle Speed Signal | On | After normal confirmation | - | |
| C1551 | IG Power Supply Voltage | On | After normal confirmation | - | |
| C1552 | PIG Power Supply Voltage | On | Power switch on (IG) again | - | |
| C1554 | Power Supply Relay Failure | On | Power switch on (IG) again | - | |
| C1555 | Motor Relay Welding Failure | On | Power switch on (IG) again | - | |
| C1567 | Error in Matching of ECUs | On | Power switch on (IG) again | - | |
| C1581 | Assist Map Number Un-Writing | On | Assist map written | - | |
| C1582 | Assist Map Number Mismatch | Off | Power switch on (IG) again | - | |
| U0129 | Lost Communication with Brake System Control Module | On | After normal confirmation | - | |
| U0293 | Lost Communication with Hybrid Control Module | On | After normal confirmation | - | |
| U1104 | Lost Communication with Driving Support ECU | Off | After normal confirmation | - | |
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING EFFORT (TORQUE) CAUTION: These service operations may affect the SRS airbags. Be sure to read the precautionary notices concerning the SRS airbag syst
Torque Sensor1 (C1511-C1514,C1517)
DESCRIPTION The torque sensor converts the steering wheel rotation torque into electric signals and sends them to the power steering ECU assembly. DTC No. Detection Item DTC Detection Condition
Torque Sensor Zero Point Adjustment Undone (C1515,C1516)
DESCRIPTION These DTCs do not indicate a malfunction. The power steering ECU assembly stores C1515 when it determines that torque sensor zero point calibration has not been performed. The power steeri
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Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH side.
The procedure listed below is for the LH side.
PROCEDURE 1. PRECAUTION NOTICE: After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery n
Removal
REMOVAL PROCEDURE 1. REMOVE RADIATOR SUPPORT OPENING COVER Click here 2. REMOVE HOOD LOCK ASSEMBLY Click here 3. REMOVE CENTER HOOD CUSHION (a) Detach the 2 claws and remove the center hood cushion. 4. REMOVE HOOD TO FRONT FENDER SEAL LH (a) Detach the clip and remove the hood to front fend
