Cruise Control System

If a malfunction code is displayed during the DTC check, check the circuit listed for that code.

HINT:
1. When 2 or more codes are indicated, the lowest numbered code will be displayed first.
2. If the inspection "Proceed to next circuit inspection shown on matrix chart" is given in the flow chart for each circuit, proceed to the circuit with the next highest number in the table to continue check.
3. If the trouble still reappears even though there are no abnormalities in any of the other circuits, then check or replace the cruise control ECU as the last step.
(*) When the vehicle speed decreases on uphill roads. (This is not a malfunction.)