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 receives signals from each sensor and ECU, then sends signals such as A/T signals, cruise control operation signals, low speed operation signals, brake control operation signals, and radar light emission prohibiting signals, to the distance control ECU. The ECM is the only component that has a function to record and output the DTCs in the dynamic radar cruise control system. Therefore, if the distance control ECU detects a communication error from the ECM, it sends a malfunction signal back to the ECM.





INSPECTION PROCEDURE

NOTICE:
When the distance control ECU or ECM is replaced with a new one, initialization must be performed Installation.

PROCEDURE

1. REPLACE ECM

(a) Replace the ECM (for 2UR-GSE) Components.

NEXT -- Continue to next step.

2. CHECK DTC

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

(b) Turn the cruise control main switch on.

(c) Drive the vehicle at a speed for which cruise control operation is possible.

(d) Check if the same DTC is recorded Dynamic Radar Cruise Control System.

Result:





B -- REPLACE DISTANCE CONTROL ECU Components

A -- END