DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1630

DTC Code DTC Name
P1630 Communication Error from VSC to ECM

DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) sends signals such as cruise control cancel signals and brake demand response signals to the hybrid vehicle control ECU when the dynamic radar cruise control system is operating.

DTC No. Detection Item DTC Detection Condition Trouble Area
P1630 Communication Error from VSC to ECM While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, communication data from the skid control ECU is logically inconsistent for approximately 0.5 seconds or more.

  • CAN communication circuit

  • Skid control ECU (brake booster with master cylinder assembly)

  • Hybrid vehicle control ECU

CAUTION / NOTICE / HINT

Note


  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

  • Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

PROCEDURE


  1. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).

      3. Drive the vehicle at 36 km/h (22 mph) or more for 0.5 seconds or more.

    3. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTC P1630 is not output A
      DTC P1630 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  2. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (SKID CONTROL ECU)


    1. Replace the brake booster with master cylinder assembly (skid control ECU).

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTCs (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON-OFF button).

      3. Drive the vehicle at 36 km/h (22 mph) or more for 0.5 seconds or more.

    3. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTC P1630 is not output A
      DTC P1630 is output B

    A

    END (SKID CONTROL ECU WAS DEFECTIVE)

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here