Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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
| 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 |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High | |
| Combination meter assembly assembly | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit | |
| Transmission range sensor circuit (for U341E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U250E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U140F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission control switch circuit (for U250E) | Refer to Transmission Control Switch Circuit | |
| Clutch switch circuit (for M/T) | Refer to Clutch Switch Circuit | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| The cruise control is canceled while it is operating. | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Clutch switch circuit (for M/T) | Refer to Clutch Switch Circuit | |
| Transmission range sensor circuit (for U341E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U250E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U140F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission control switch circuit (for U250E) | Refer to Transmission Control Switch Circuit | |
| 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 "A" Intermittent / Erratic / High | |
| Combination meter assembly | 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Vehicle speed cannot be set. (The CRUISE main indicator light does not come on.) | Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit |
| Clutch switch circuit (for M/T) | Refer to Clutch Switch Circuit | |
| Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High | |
| Combination meter assembly | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Cruise control switch circuit | Refer to Cruise Control Switch Circuit | |
| Transmission range sensor circuit (for U341E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U250E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U140F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission control switch circuit (for U250E) | Refer to Transmission Control Switch Circuit | |
| Cruise main indicator light circuit | Refer to Cruise Main Indicator Light Circuit | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Vehicle speed can be set. (The CRUISE main indicator light does not come on.) | 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Pulling back on the 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Pulling back on the control main switch does not cancel the cruise control. (The CRUISE main indicator light goes off.) | Replace ECM (for 2ZR-FE) | Refer to COMPONENTS |
| Replace ECM (for 2AZ-FE) | Refer to COMPONENTS | |
| 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 "A" Intermittent / Erratic / High |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| The cruise control is not canceled when vehicle speed drops below the low speed limit. (The CRUISE main indicator light goes off.) | Replace ECM (for 2ZR-FE) | Refer to COMPONENTS |
| Replace ECM (for 2AZ-FE) | Refer to COMPONENTS | |
| 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Depressing the brake pedal does not cancel the cruise control. (The CRUISE main indicator light goes off.) | Replace ECM (for 2ZR-FE) | Refer to COMPONENTS |
| Replace ECM (for 2AZ-FE) | Refer to COMPONENTS | |
| Depressing the clutch pedal does not cancel the cruise control. (The CRUISE main indicator light remains on.) | Clutch switch circuit (for M/T) | Refer to Clutch Switch Circuit |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Depressing the clutch pedal does not cancel the cruise control. (The CRUISE main indicator light goes off.) | Replace ECM (for 2ZR-FE) | Refer to COMPONENTS |
| Replace ECM (for 2AZ-FE) | Refer to COMPONENTS | |
| Moving the shift lever does not cancel the cruise control. | Transmission range sensor circuit (for U341E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) |
| Transmission range sensor circuit (for U250E) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission range sensor circuit (for U140F) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| Transmission control switch circuit (for U250E) | Refer to Transmission Control Switch Circuit | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| Hunting (Speed is not constant.) | Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High |
| Combination meter assembly | 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above areas have been inspected and have proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS | |
| The SET indicator light does not illuminate SET function operates normally. | Cruise SET indicator light circuit | Refer to Cruise SET 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 2ZR-FE) | Refer to COMPONENTS | |
| If the symptom still occurs after the above area has been inspected and has proven to be normal, replace the ECM. (for 2AZ-FE) | Refer to COMPONENTS |