- Distance control ECU
- CAN communication system
- ECM
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Cruise Control | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000003FEJ000X |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
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. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When the distance control ECU is replaced with a new one, initialization must be performed
.
PROCEDURE
|
1. |
REPLACE ECM |
(a) Replace the ECM with a new one
.
|
|
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
.
(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
.
OK:
DTC P1616 is not output.
|
|
|