Problem Symptoms Table
HINT:
Be sure to perform the SYMPTOM SIMULATION procedure before replacing the ECM. If these symptoms do not persist, the cause of the problem may be a poor intermittent electrical contact (open or short) of a wire harness or connector.
Cruise control system
PROBLEM SYMPTOMS
| Symptom | Suspected Area | See |
|---|---|---|
| Vehicle speed cannot be set. (The CRUISE main indicator light comes on.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. Vehicle speed sensor circuit | DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High | |
| 4. Stop light switch circuit | DTC P0571 Brake Switch "A" Circuit | |
| 5. Park/Neutral position sensor circuit | PARK / NEUTRAL POSITION SWITCH CIRCUIT | |
| 6. If the symptoms still occur after the above areas have been inspected and have proven to be normal, replace the ECM. | REMOVAL | |
| Pushing the ON-OFF button does not turn the cruise control system on. (Vehicle speed cannot be set.) | 1. Stop light switch circuit | DTC P0571 Brake Switch "A" Circuit |
| 2. Vehicle speed sensor circuit | DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High | |
| 3. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT | |
| 4. Park/Neutral position sensor circuit | PARK / NEUTRAL POSITION SWITCH CIRCUIT | |
| 5. Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 6. If the symptoms still occur after the above areas have been inspected and have proven to be normal, replace the ECM. | REMOVAL | |
| Pushing the ON-OFF button does not turn the cruise control system on. (Vehicle speed can be set.) | 1. Cruise main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| The cruise control is canceled while it is operating. | 1. Stop light switch circuit | DTC P0571 Brake Switch "A" Circuit |
| 2. Park/Neutral position sensor circuit | PARK / NEUTRAL POSITION SWITCH CIRCUIT | |
| 3. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT | |
| 4. Vehicle speed sensor circuit | DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High | |
| 5. If the symptoms still occur after the above areas have been inspected and have proven to be normal, replace the ECM. | REMOVAL | |
| Pulling back on the control main switch does not cancel the cruise control. (The CRUISE main indicator light remains on.) | 1. Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| Pulling back on the control main switch does not cancel the cruise control. (The CRUISE main indicator light goes off.) | ECM | REMOVAL |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The CRUISE main indicator light remains on.) | 1. Vehicle speed sensor circuit | DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The CRUISE main indicator light goes off.) | ECM | REMOVAL |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light remains on.) | 1. Stop light switch circuit | DTC P0571 Brake Switch "A" Circuit |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light goes off.) | ECM | REMOVAL |
| Moving the shift lever does not cancel the cruise control. | 1. Park/Neutral position switch circuit | PARK / NEUTRAL POSITION SWITCH CIRCUIT |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| Hunting (Speed is not constant.) | 1. Vehicle speed sensor circuit | DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL | |
| The CRUISE main indicator light remains blinking. | 1. TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| 2. If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL |