Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Cruise control system
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Main switch cannot be turned ON (CRUISE main indicator turn on combination meter does not illuminate) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| Cruise main indicator circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| ECM | REMOVAL | |
| SET not occurring or CANCEL occurring (DTC is not output) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| Combination meter | REMOVAL | |
| ECM | REMOVAL | |
| Actual vehicle speed deviates above or below the set speed | Skid control ECU | REMOVAL |
| ECM | REMOVAL | |
| Gear shifting occurs frequently between 7th and O/D when driving with cruise control on | Skid control ECU | REMOVAL |
| ECM | REMOVAL | |
| Cruise control not canceled, even when brake pedal is depressed | Stop light switch circuit | DTC P0571 STOP LIGHT SWITCH CIRCUIT MALFUNCTION |
| ECM | REMOVAL | |
| Cruise control not canceled, even when transmission is shift to N | Park/neutral position switch circuit | INSPECTION |
| ECM | REMOVAL | |
| Control switch does not operate (-/SET, +/RES, CANCEL not possible) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| ECM | REMOVAL | |
| Speed setting cannot be canceled (CANCEL function fails) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| ECM | REMOVAL | |
| SET possible at 40 km/h (25 mph) or less, or CANCEL does not operate | Skid control ECU | REMOVAL |
| ECM | REMOVAL | |
| Poor response in ACCEL and RESUME modes | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| ECM | REMOVAL | |
| O/D does not resume, even though road is not uphill | Skid control ECU | REMOVAL |
| ECM | REMOVAL | |
| DTC memory is erased | ECM | REMOVAL |
| DTC is not output, or is output when should not be | TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| ECM | REMOVAL | |
| Cruise main indicator light does not illuminate | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| Cruise main indicator circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| Combination meter | REMOVAL | |
| ECM | REMOVAL |