P1617

CRUISE CONTROL: DYNAMIC LASER CRUISE CONTROL SYSTEM: P1617: Distance Control ECU Malfunction

DTC P1617 - Distance Control ECU Malfunction

DESCRIPTION

In the dynamic laser cruise control system, the ECM and the distance control ECU communicate with one another to control the system based on some designation information. If the designation information of the ECM and distance control ECU is different from each other, this DTC is recorded.





INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM THE DESIGNATION INFORMATION
(a) If this DTC is output, confirm the designation information by following the procedures below.
(1) Turn the ignition switch on (IG).
(2) Push the ON-OFF button of the cruise main switch on.
(3) With the brake pedal depressed, push the cruise control main switch to +/RES 3 times within 3 seconds. Check that the VSC buzzer sounds at this time.

NOTE: Do not turn the headlight dimmer switch on at this time because the optical axis automatic adjustment mode has already started, which could lead to incorrect optical axis. If the light control switch is turned on by mistake, readjust the optical axis (refer to Adjustments for optical axis adjustment).

(4) Clear the DTC and then recheck for DTCs.
OK:
DTC is not output.

HINT:
- If DTC P1617 is still output after performing the above procedures, replace the distance control ECU.
- If the DTC P1617 is still output after replacing the distance control ECU, replace the ECM.

NG -- REPLACE DISTANCE CONTROL ECU
OK -- SYSTEM OK