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
| Symptom | Suspected Area | See |
|---|---|---|
| Vehicle speed cannot be set. (The CRUISE main indicator light comes on.) | Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| Combination meter | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction | |
| Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit | |
| Park/neutral position switch circuit (for U151E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U151F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U760E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Pushing the ON-OFF button does not turn the cruise control system on. (Vehicle speed cannot be set.) | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit | |
| Park/neutral position switch circuit (for U151E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U151F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U760E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Combination meter | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Pushing the ON-OFF button does not turn the cruise control system on. (Vehicle speed can be set.) | Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| The cruise control is canceled while it is operating. | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Park/neutral position switch circuit (for U151E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U151F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U760E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit | |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Pulling back on the cruise control main switch does not cancel the cruise control. (The CRUISE main indicator light remains on.) | Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Pulling back on the cruise control main switch does not cancel the cruise control. (The CRUISE main indicator light goes off.) | ECM (for 2GR-FE) | Refer to REMOVAL |
| ECM (for 1AR-FE) | Refer to 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 | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The CRUISE main indicator light goes off.) | ECM (for 2GR-FE) | Refer to REMOVAL |
| ECM (for 1AR-FE) | Refer to REMOVAL | |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light remains on.) | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light goes off.) | ECM (for 2GR-FE) | Refer to REMOVAL |
| ECM (for 1AR-FE) | Refer to REMOVAL | |
| Moving the shift lever does not cancel the cruise control. | Park/neutral position switch circuit (for U151E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) |
| Park/neutral position switch circuit (for U151F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Park/neutral position switch circuit (for U760E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| Hunting (Speed is not constant.) | Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL | |
| The CRUISE main indicator light remains blinking. | TC and CG terminal circuit | Refer to TC and CG Terminal Circuit |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM (for 2GR-FE). | Refer to REMOVAL | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM (for 1AR-FE). | Refer to REMOVAL |