DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P1616

DTC Code DTC Name
P1616 Communication Error from ECM to Distance Control ECU

DESCRIPTION

The ECM sends the cruise control main switch signal, vehicle speed signal, etc. to the distance control ECU. The distance control ECU sends the acceleration signal, deceleration request signal, etc. to the ECM. The ECM controls cruise control according to these signals.

DTC Code DTC Detection Condition Trouble Area
P1616 The vehicle speed is 40 km/h (25 mph) or more with the cruise control main switch on (vehicle-to-vehicle distance control mode) and the data sent from the ECM to the distance control ECU is abnormal.

  • Distance control ECU

  • CAN communication system

  • ECM

WIRING DIAGRAM

A01ERRQE04

INSPECTION PROCEDURE

Note

When the distance control ECU is replaced with a new one, initialization must be performed Click here.

PROCEDURE


  1. REPLACE ECM


    1. Replace the ECM with a new one Click here.


    NEXT

  2. CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM)


    1. Using the intelligent tester, enter the following menus: Powertrain / Radar Cruise / Trouble Code.

    2. Clear the DTCs Click here.

    3. Perform the following to make sure the DTC detection conditions are met.

      Tech Tips

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


      1. Drive the vehicle at a speed of 40 km/h (25 mph) or more.

      2. Turn the cruise control main switch on to set the vehicle-to-vehicle distance control mode to the standby state.

    4. Check for DTCs Click here.

      OK
      DTC P1616 is not output.

    NG

    REPLACE DISTANCE CONTROL ECU Click here

    OK

    END