DESCRIPTION
The ECM controls the cruise control system of the vehicle. The data and DTCs related to the cruise control system can be read from the DLC3 of the vehicle. Use the GTS to check and solve the problem.
Tech Tips
If a vehicle speed sensor, stop light switch assembly or any other related part malfunctions, the ECM cancels control of vehicle speed automatically.
CHECK DLC3
Check the DLC3.
CHECK INDICATOR
| *a | Cruise Control Indicator (Green) |
Turn the engine switch on (IG).
Check that the cruise control indicator illuminates (green) when the cruise control system is turned on using the cruise control main switch (ON-OFF button), and that the indicator goes out when the cruise control system is turned off using the cruise control main switch (ON-OFF button). If the results are not as specified, perform the Cruise Main Indicator Circuit inspection procedure.
Tech Tips
While driving with the cruise control system controlling vehicle speed, the ECM will automatically cancel control of vehicle speed by the cruise control system when a malfunction occurs in one of the following: vehicle speed sensors, stop light switch assembly, or other related parts. When control of vehicle speed by the cruise control system is automatically canceled, the cruise control indicator goes out and a warning message is displayed. At the same time, a DTC is stored.