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 |
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the audio and visual system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS
When troubleshooting, confirm that the problem sympto
