Lexus NX: Steering Angle Sensor Communication Error (C1784)
DESCRIPTION
Steering sensor signals are sent to the absorber control ECU via CAN communication.
When there is a communication malfunction, the malfunction will be detected by the diagnosis function.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate |
|---|---|---|---|---|
| C1784 | Steering Angle Sensor Communication Error | A steering sensor signal malfunction is detected, or a steering sensor power malfunction signal is detected for 5 seconds or more. |
| Does not come on |
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the steering sensor, confirm that the replacement part is of the correct specification.
- Before performing troubleshooting, inspect the connectors of related circuits.
-
If DTC C1782 (Power Source Voltage Malfunction) is output at the same time, perform troubleshooting for C1782 first.
Click here
.gif)
-
Before replacing the absorber control ECU, perform all of the following again: 1) symptom simulation ; 2) DTC inspection ; and 3) Techstream inspection (ECU Data List or Active Test ). If no malfunctions are found in other areas, replace the absorber control ECU.
-
When the absorber control ECU is replaced, switch to test mode and check that all test mode DTCs are cleared when their respective deletion conditions are met.
Click here
PROCEDURE
| 1. | CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| CAN DTC is not output | A |
| CAN DTC is output | B |
| B | .gif) | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
.gif)
| 2. | CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Check for steering sensor malfunction DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC is not output | A |
| DTC is output | B |
| A | | REPLACE ABSORBER CONTROL ECU |
| B | | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
READ NEXT:
Vehicle Identification Malfunction (C1789)
DESCRIPTION
When the absorber control ECU has not acquired the vehicle identification information, DTC C1789 is stored. When the vehicle identification information is correctly acquired, this DTC i
Lost Communication With TCM (U0101,U0122,U0124,U0126,U0293)
DESCRIPTION The absorber control ECU receives signals from the skid control ECU (brake booster with master cylinder assembly), steering sensor, airbag ECU assembly (built into acceleration sensor), EC
SEE MORE:
Acn Call End
ACN CALL END ACN CALL END This function terminates the ACN (Automatic Collision Notification) to the telematics provider. After a collision in which the DCM receives "Collision Detection Signal", the vehicle will send the emergency call notification to the telematics provider until the emergency cal
Parts Location
PARTS LOCATION ILLUSTRATION *1 VEHICLE SOUND SWITCH *2 STEREO COMPONENT EQUALIZER ASSEMBLY *3 NO. 1 SPEAKER ASSEMBLY WITH BOX *4 HYBRID VEHICLE CONTROL ECU *5 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *6 BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - SKID CONTROL ECU
