P1616

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1616: Communication Error from ECM to Distance Control ECU
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.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When the distance control ECU is replaced with a new one, initialization must be performed Testing and Inspection.

PROCEDURE

1. REPLACE ECM

(a) Replace the ECM with a new one Removal.

NEXT -- Continue to next step.

2. CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

(a) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code.

(b) Clear the DTCs Dynamic Radar Cruise Control System.

(c) Perform the following to make sure the DTC detection conditions are met.

HINT
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.

(d) Check for DTCs Dynamic Radar Cruise Control System.

OK:

DTC P1616 is not output.

NG -- REPLACE DISTANCE CONTROL ECU Removal

OK -- END