Lexus NX: Lost Communication with Cruise Control Module (U0104,U0122,U0293)
DESCRIPTION
The hybrid vehicle control ECU communicates with each sensor and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| U0104 | Lost Communication with Cruise Control Module | When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the millimeter wave radar sensor assembly and hybrid vehicle control ECU is detected for approximately 1 second or more. | CAN communication system | Radar Cruise1 |
| U0122 | Lost Communication with Vehicle Dynamics Control Module | When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 2.6 seconds or more. | CAN communication system | Radar Cruise1 |
| U0293 | Lost Communication with Hybrid Vehicle Control System | When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 1 second or more. | CAN communication system | Radar Cruise1 |
PROCEDURE
| 1. | CHECK FOR DTCs (Radar Cruise1) |
(a) Clear the DTCs.
Click here .gif)
(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC U0100, U0104 and U0122 are not output | A |
| DTC U0100, U0104 or U0122 is output | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | GO TO CAN COMMUNICATION SYSTEM |
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When using a vise, place aluminum plates between the part and vise.
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