Problem Symptoms Table
- 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
CRUISE CONTROL SYSTEM - PROBLEM SYMPTOMS CHART
| Symptom | Suspected area | See |
|---|---|---|
| SET not occurring or CANCEL occurring (DTC is Normal) | 1. Input signal circuit | DTC P0607/54 CONTROL MODULE PERFORMANCE |
| 2. Vehicle speed sensor circuit | DTC P0500/21 VEHICLE SPEED SENSOR "A"; DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH | |
| 3. Stop light switch circuit | DTC P0571/52 BRAKE SWITCH "A" CIRCUIT | |
| 4. Park/neutral position switch circuit | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| 5. ECM | TERMINALS OF ECM | |
| SET not occurring or CANCEL occurring (DTC is not output) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| Actual vehicle speed deviates above or below the seat speed | 1. Vehicle speed sensor circuit | DTC P0500/21 VEHICLE SPEED SENSOR "A"; DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| Gear shifting occurs frequently between 3rd and O/D when driving on | 1. Vehicle speed sensor circuit | DTC P0500/21 VEHICLE SPEED SENSOR "A"; DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| Cruise control not cancelled, even when break pedal is depressed | 1. Stop light switch circuit | DTC P0571/52 BRAKE SWITCH "A" CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| Cruise control not cancelled, even when transmission is shifted to "N" | 1. Park/neutral position switch circuit | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) |
| 2. ECM | TERMINALS OF ECM | |
| Control switch does not operate (+/SET, +/RES, CANCEL not possible) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| SET possible at 40 km/h (25 mph) or less, or CANCEL does not operate | 1. Vehicle speed sensor circuit | DTC P0500/21 VEHICLE SPEED SENSOR "A"; DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| Poor response is ACCEL and RESUME modes | 1. ECM | TERMINALS OF ECM |
| O/D does not resume, even though the road is not uphill | 1. Vehicle speed sensor circuit | DTC P0500/21 VEHICLE SPEED SENSOR "A"; DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| DTC memory is erased | 1. ECM | TERMINALS OF ECM |
| DTC is not output, or is output when should not be | 1. Diagnosis circuit | - |
| 2. ECM | TERMINALS OF ECM | |
| Cruise main indicator light remains ON or falls to light up | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. Cruise main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| 3. Combination meter assembly | PROBLEM SYMPTOMS TABLE | |
| 4. ECM | TERMINALS OF ECM | |
| Cruise main indicator light does not light up | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. Cruise main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| 3. Combination meter assembly | PROBLEM SYMPTOMS TABLE | |
| 4. ECM | TERMINALS OF ECM |