Reading Diagnostic Trouble Codes (DTC)

1. Turn ignition switch to ON.
2. Using jumper, connect DLC terminals Tc and E1.
3. Check if the CRUISE indicator lamp flashes rapidly. This indicates that there are no DTCs stored in the cruise control module memory.
4. The CRUISE indicator lamp will display any DTCs that are stored by flashing a numbered sequence. If more than one DTC is stored, they will be flashed sequentially from the lowest to the highest. Perform the cruise control OBD system check to determine cause of malfunction within the cruise control system. Diagnostic System Check - Cruise Control