Use the following procedures to troubleshoot the cruise control system.
*: Use the intelligent tester.
VEHICLE BROUGHT TO WORKSHOP
INSPECT BATTERY VOLTAGE
| Standard voltage |
|---|
| 11 to 14 V |
If the voltage is below 11 V, recharge or replace the battery before proceeding.
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
Use the intelligent tester to check if the CAN communication system is functioning normally.
| Result | Proceed to |
|---|---|
| CAN DTC is not output | A |
| CAN DTC is output (for LHD with Entry and Start System) | B |
| CAN DTC is output (for LHD without Entry and Start System) | C |
| CAN DTC is output (for RHD with Entry and Start System) | D |
| CAN DTC is output (for RHD without Entry and Start System) | E |
CHECK FOR DTC*
Check for DTCs (Click here).
Clear the DTCs (Click here).
Recheck for DTCs (Click here).
| Result | Proceed to |
|---|---|
| DTC is not output | A |
| DTC is output | B |
PROBLEM SYMPTOMS TABLE
Refer to Problem Symptoms Table (Click here).
| Result | Proceed to |
|---|---|
| Fault is not listed in problem symptoms table | A |
| Fault is listed in problem symptoms table | B |
OVERALL ANALYSIS AND TROUBLESHOOTING*
Road Test (Click here)
Terminals of ECM (Click here)
Data List / Active Test (Click here)
ADJUST, REPAIR OR REPLACE
CONFIRMATION TEST