Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.
- Inspect the fuse and relay related to this system before inspecting the suspected areas below.
CRUISE CONTROL SYSTEM:
CRUISE CONTROL SYSTEM PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Vehicle speed cannot be set. (The CRUISE main indicator light comes on.) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION | |
| Stop light switch circuit | DTC P0571 BRAKE SWITCH "A" CIRCUIT | |
| Transmission range sensor circuit (U151E) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| Transmission range sensor circuit (U151F) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| 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.) | Stop light switch circuit | DTC P0571 BRAKE SWITCH "A" CIRCUIT |
| Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION | |
| Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT | |
| Transmission range sensor circuit (U151E) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| Transmission range sensor circuit (U151F) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| Combination meter | HOW TO PROCEED WITH TROUBLESHOOTING | |
| 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.) | Cruise main indicator light circuit | CRUISE MAIN INDICATOR LIGHT CIRCUIT |
| 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. | Stop light switch circuit | DTC P0571 BRAKE SWITCH "A" CIRCUIT |
| Transmission range sensor circuit (U151E) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| Transmission range sensor circuit (U151F) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT | |
| Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION | |
| 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.) | Cruise control switch circuit | CRUISE CONTROL SWITCH CIRCUIT |
| 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.) | Replace the ECM. | REMOVAL |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The CRUISE main indicator light remains on.) | Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION |
| 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.) | Replace the ECM. | REMOVAL |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light remains on.) | Stop light switch circuit | DTC P0571 BRAKE SWITCH "A" CIRCUIT |
| 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.) | Replace the ECM. | REMOVAL |
| Moving the shift lever does not cancel the cruise control. | Transmission range sensor circuit (U151E) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) |
| Transmission range sensor circuit (U151F) | DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) | |
| 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.) | Vehicle speed sensor circuit | DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION; DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION |
| 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. | TC and CG terminal circuit | TC AND CG TERMINAL CIRCUIT |
| If the symptoms still occur after the above area has been inspected and has proven to be normal, replace the ECM. | REMOVAL |