Lexus NX: Communication Error from VSC to HV ECU (P1630)
DESCRIPTION
The skid control ECU (brake booster with master cylinder assembly) sends signals such as brake request signals to the hybrid vehicle control ECU. If an abnormal signal is detected, the hybrid vehicle control ECU stores DTC P1630.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| P1630 | Communication Error from VSC to HV ECU | When the dynamic radar cruise control system is operating, the hybrid vehicle control ECU detects abnormal data sent from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more. |
| Radar Cruise1 |
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.
PROCEDURE
| 1. | CHECK FOR DTCs (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Check for electronically controlled brake system DTCs.
Click here .gif)
| Result | Proceed to |
|---|---|
| Electronically controlled brake system DTCs are not output | A |
| Electronically controlled brake system DTCs are output | B |
| B | .gif) | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
|
.gif)
| 2. | CHECK FOR DTCs (Radar Cruise1) |
(a) Clear the DTCs.
Click here
(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 P1630 is not output | A |
| DTC P1630 is output | B |
| A | | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE HYBRID VEHICLE CONTROL ECU |
READ NEXT:
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 sys
Lost Communication with Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U015587,U029387,U110687)
DESCRIPTION The forward recognition camera communicates with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication sys
Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message (U023587)
DESCRIPTION The forward recognition camera communicates with the millimeter wave radar sensor assembly via CAN communication. If a communication malfunction between the forward recognition camera and
SEE MORE:
Motor High-voltage Circuit
DESCRIPTION The cause of the malfunction may be the high-voltage circuit of the motor. Check the motor internal resistance and the connection condition of the high-voltage line between the inverter and motor to check whether there is an open or short circuit. Related Parts Check Area Inspection
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE INTELLIGENT CLEARANCE SONAR SYSTEM (a) Customizing with the Techstream. NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubl
