| Symptom | Diagnostic procedure | Also check for | |
|---|---|---|---|
| Cruise control cannot be set | 1. 2. 3. 4. | Check cruise control combination switch Test brake pedal position switch and check its adjustment Test the clutch pedal position switch and check its adjustment (M/T) Check control unit |
|
| Cruise control can be set, but cruise control main indicator light does not go on | Check the cruise main indicator bulb in gauge assembly |
| |
| Cruise control can be set, but cruise control indicator light does not go on | 1. 2. | Check the cruise control indicator bulb in gauge assembly Check control unit |
|
| Cruise speed is noticeably higher or lower than what was set | 1. 2. | Check actuator Check control unit | |
| Excessive overshooting or undershooting when trying to set speed | 1. 2. | Check actuator Check control unit | |
| Speed fluctuation on a flat road with cruise control set | 1. 2. | Check actuator Check control unit | |
| Vehicle does not decelerate or accelerate accordingly when SET/RESUME/CANCEL button is pushed | 1. 2. | Check cruise control combination switch Check control unit | Open circuit, loose or disconnected terminals: GRY, LT GRN |
| Set speed does not cancel (engine rpm stays high) when clutch pedal is pushed (M/T) | 1. 2. | Check control unit Test the clutch pedal position switch and check its adjustment | Short to ground in the LT BLU wire |
| Symptom | Diagnostic procedure | Also check for | |
|---|---|---|---|
| Set speed does not cancel when shift lever is moved to Neutral position (A/T) | Check control unit | Short to ground in the PNK wire. | |
| Set speed does not cancel when brake pedal is pushed | 1. 2. | Test brake pedal position switch and check its adjustment Check control unit | Open circuit, loose or disconnected terminals: WHT/BLK |
| Set speed does not cancel when MASTER button is turned OFF | 1. 2. | Check cruise control combination switch Check control unit | Short power in the GRN (LHD), LT GRN (RHD) wire. |
| Set speed does not cancel when CANCEL button is pushed | 1. 2. | Check cruise control combination switch Check control unit | Open circuit, loose or disconnected terminals: GRY, LT GRN |
| Set speed will not resume when RESUME button is pushed (with MASTER button ON, and set speed temporarily cancelled by pressing the brake pedal) | 1. 2. | Check cruise control combination switch Check control unit | Open circuit, loose or disconnected terminals: LT GRN |
| The transmission shifts down slower than normal when going up a hill with cruise control on (A/T) | Troubleshoot the cruise control communication circuit | Open circuit, loose or disconnected terminals: ORN (LHD), BLU (RHD) | |