Up to 08/2009

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P1615: Communication Error from Distance Control ECU to ECM
P1615 - Communication Error from Distance Control ECU to ECM

DESCRIPTION

The driving support ECU (distance control ECU) and ECM always communicate the data for vehicle general control and diagnosis function each other through communication line.

The driving support ECU determines the distance, relative speed, and target deceleration speed based on the signal from the millimeter wave radar sensor, and it transmits a control demand signal to the ECM.





INSPECTION PROCEDURE

PROCEDURE

1. REPLACE DRIVING SUPPORT ECU

(a) Replace the driving support ECU Components.

NEXT -- Continue to next step.

2. CHECK DTC

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

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

HINT
If the detection conditions are not met, the malfunction cannot be detected.

(1) Drive the vehicle at a speed of 50 km/h (31 mph) or more.

(2) Turn the cruise control main switch on.

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

Result:





B -- REPLACE ECM Components

A -- END