Test No. 6: Cruise Control Cannot Be Set
- Check if scan tool can communicate with cruise control system. If communication is not possible, go to TEST NO. 1: SCAN TOOL COMMUNICATION WITH CRUISE CONTROL ECU NOT POSSIBLE . If communication is possible, go to next step.
- Check if DTC 11, 12, 14, 15, 16 or 17 are present. If DTC(s) are present, go to appropriate DTC diagnosis. See SELF-DIAGNOSTIC SYSTEM . If DTC(s) are not present, go to next step.
- Check if input switch inspection is possible using scan tool. If input switch inspection is not possible, go to TEST NO. 2: INPUT SWITCH INSPECTION WITH SCAN TOOL NOT POSSIBLE; DIAGNOSTIC INSPECTION IS POSSIBLE , TEST NO. 3: CRUISE CONTROL DOES NOT CANCEL WHEN CLUTCH IS DEPRESSED , TEST NO. 4: CRUISE CONTROL DOES NOT CANCEL WHEN TRANSAXLE IS SHIFTED TO "N" RANGE and TEST NO. 5: CRUISE CONTROL DOES NOT CANCEL WHEN CANCEL IS SELECTED ON SWITCH . If input switch inspection is possible, go to next step.
- Check if DTC 15 or system test no. 2, 3, 4 and 5 is present. If DTC 15 is present, test autocruise control switch. If the following systems procedures are present, go to TEST NO. 2: INPUT SWITCH INSPECTION WITH SCAN TOOL NOT POSSIBLE; DIAGNOSTIC INSPECTION IS POSSIBLE , TEST NO. 3: CRUISE CONTROL DOES NOT CANCEL WHEN CLUTCH IS DEPRESSED , TEST NO. 4: CRUISE CONTROL DOES NOT CANCEL WHEN TRANSAXLE IS SHIFTED TO "N" RANGE and TEST NO. 5: CRUISE CONTROL DOES NOT CANCEL WHEN CANCEL IS SELECTED ON SWITCH . If switches test okay and codes can be cleared from ECU memory, or DTCs 15 and symptoms test no. 2, 3, 4 and 5 are not displayed, replace cruise control ECU.