Problem Symptoms Table
WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
If a normal system code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting article.
HINT:
Inspect the "Fuse" and "Relay" before confirming the suspected areas as shown in the chart below. Inspect each malfunction circuit in numerical order for the corresponding symptom.
CRUISE CONTROL SYSTEM
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Main switch cannot be turned ON. (Cruise indicator light in combination meter does not come on.) | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. CRUISE main indicator light circuit | Refer to Cruise Main Indicator Light Circuit | |
| 3. ECM | Refer to TERMINALS OF ECU | |
| Vehicle speed setting cannot be done. (Although indicator light in combination meter comes on when the main switch is turned ON, it goes off when vehicle speed is set.) | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. ECM | Refer to TERMINALS OF ECU | |
| Setting cannot be done. (Indicator light in combination meter comes on when the main switch is turned ON and they remain ON while setting.) | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit | |
| 3. Park/neutral position switch circuit (DTC P0705) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| 4. Transmission control switch circuit | Refer to Transmission Control Switch Circuit | |
| 5. Combination meter system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| 6. ECM | Refer to TERMINALS OF ECU | |
| While the vehicle is driven with cruise control, the set control is canceled. (Indicator light and CRUISE remains ON.) | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction | |
| 3. Stop light switch circuit | Refer to DTC P0571: Brake Switch "A" Circuit | |
| 4. CRUISE main indicator light circuit | Refer to Cruise Main Indicator Light Circuit | |
| 5. Park/neutral position switch circuit (DTC P0705) | Refer to DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) | |
| 6. ECM | Refer to TERMINALS OF ECU | |
| Hunting (Speed is not constant.) | 1. Vehicle speed sensor circuit | Refer to DTC P0500: Vehicle Speed Sensor Malfunction; DTC P0503: Vehicle Speed Sensor Circuit Malfunction |
| 2. ECM | Refer to TERMINALS OF ECU | |
| Setting cannot be cancelled. (When Coast, Acceleration, Resume, Set speed change and Control switch are operated.) | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. ECM | Refer to TERMINALS OF ECU | |
| DTC is not output, or is output when it should not be. | 1. Diagnosis circuit | Refer to TC and CG Terminal Circuit |
| 2. ECM | Refer to TERMINALS OF ECU | |
| CRUISE main indicator light does not come on. | 1. Cruise control switch circuit | Refer to Cruise Control Switch Circuit |
| 2. CRUISE main indicator light circuit | Refer to Cruise Main Indicator Light Circuit | |
| 3. ECM | Refer to TERMINALS OF ECU | |
| 4. Combination meter | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| "SET" indicator light does not come on. (Setting can be done.) | 1. CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| 2. Multiplex communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| 3. Combination meter ("SET" indicator) | Refer to DATA LIST / ACTIVE TEST | |
| 4. ECM | Refer to REMOVAL | |
| "SET" indicator light comes on. (Setting cannot be done.) | ECM | Refer to REMOVAL |