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
CRUISE CONTROL SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Main switch cannot be turned ON. (Indicator light on combination meter does not illuminate.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. CRUISE main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| 3. ECM | TERMINALS OF ECM | |
| Speed cannot be set. (Indicator light on combination meter illuminates when main switch is turned ON, but turns off when operating SET function.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| Speed cannot be set. (Indicator light on combination meter illuminates when main switch is turned ON and remains ON while operating SET function.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. Stop light switch circuit | DTC P0571 Stop Light Switch Circuit Malfunction | |
| 3. PNP switch circuit | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT | |
| 4. Combination meter system | PROBLEM SYMPTOMS TABLE | |
| 5. ECM | TERMINALS OF ECM | |
| 6. Vehicle speed sensor | DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH | |
| While driving with cruise control, set speed is canceled. (Indicator light remains ON.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH | |
| 3. Stop light switch circuit | DTC P0571 Stop Light Switch Circuit Malfunction | |
| 4. CRUISE main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| 5. PNP switch circuit | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT | |
| 6. ECM | TERMINALS OF ECM | |
| Hunting occurs. (Speed is not constant.) | 1. Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| Speed setting cannot be canceled. (CANCEL function fails.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| DTC is not output, or is output when it should not be. | 1. TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| CRUISE main indicator light does not illuminate. | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. CRUISE main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT | |
| 3. ECM | TERMINALS OF ECM | |
| 4. Combination meter assembly | PROBLEM SYMPTOMS TABLE | |
| Cruise control cannot be canceled by decreasing speed so that it is below low speed limit. | 1. Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR "A"; DTC P0503 VEHICLE SPEED SENSOR "A" INTERMITTENT / ERRATIC / HIGH |
| 2. ECM | TERMINALS OF ECM | |
| Cruise control cannot be canceled by operating shift lever. | 1. PNP switch circuit | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT); DTC P0850 PARK/NEUTRAL SWITCH INPUT CIRCUIT |
| 2. ECM | TERMINALS OF ECM | |
| Cruise control cannot be canceled even when brake pedal is depressed. | 1. Stop light switch circuit | DTC P0571 Stop Light Switch Circuit Malfunction |
| 2. ECM | TERMINALS OF ECM |