Adaptive Cruise Control System Symptom Diagnosis
Precautions: Precautions for Diagnosing Trouble · Precautions for Adaptive Cruise Control System · Precautions for Replacing RBS Control Module · General safety (00)
NOTE:
Adaptive cruise control system is controlled by the RBS control module communicating with ESP® control module, BCM, ECM, ENG A-STOP control module, steering angle sensor and combination meter through CAN communication. Before performing symptom diagnosis, check that no DTC is indicated in these control modules.
| Condition | Possible Cause | Action |
|---|---|---|
|
Adaptive cruise control system cannot be ON
|
Faulty CRUISE (main) switch
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|
|
|
Vehicle speed cannot be set
|
Faulty SET/– switch
|
|
|
Faulty brake light switch
|
||
|
Faulty CPP switch (M/T model)
|
Check CPP switch.
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|
|
|
Acceleration or deceleration is not available by operating RES/+ or SET/– switch
|
Faulty RES/+ or SET/– switch
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|
|
|
Vehicle distance cannot be changed
|
Faulty distance switch
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|
|
|
Adaptive cruise control cannot be canceled
|
Faulty CANCEL switch
|
|
|
Faulty brake light switch
|
||
|
Faulty CPP switch (M/T model)
|
Check CPP switch.
|
|
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|
|
|
Adaptive cruise control at vehicle speed stored in memory cannot be resumed after adaptive cruise control was canceled by means other than CRUISE (main) switch
|
Adaptive cruise control was canceled by means other than recoverable condition.
|
—
|
|
Faulty RES/+ switch
|
||
|
Faulty wiring or grounding
|
Repair wiring.
|
|
|
Faulty ECM
|
Check ECM.
|