Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
Use the table below to help determine the causes of the problem symptom. 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 area in the order they are listed. Replace parts as necessary.
MALFUNCTION SYSTEM
MALFUNCTION SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Entire combination meter assembly does not operate | Refer to troubleshooting | ENTIRE COMBINATION METER DOES NOT OPERATE |
| Operating light control rheostat does not change light brightness | Refer to troubleshooting | OPERATING LIGHT CONTROL RHEOSTAT DOES NOT CHANGE LIGHT BRIGHTNESS |
METER GAUGES
METER GAUGES
| Symptom | Suspected Area | See |
|---|---|---|
| Speedometer malfunction | Refer to troubleshooting | SPEEDOMETER MALFUNCTION |
| Tachometer malfunction | Refer to troubleshooting | TACHOMETER MALFUNCTION |
| Fuel gauge malfunction | Refer to troubleshooting | FUEL GAUGE MALFUNCTION |
| Malfunction in engine coolant temperature warning light | Refer to troubleshooting | MALFUNCTION IN WATER TEMPERATURE WARNING LIGHT |
WARNING/INDICATOR LIGHT
WARNING/INDICATOR LIGHT
| Symptom | Suspected Area | See | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| MIL | ECM | MIL CIRCUIT | ||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Wire harness or connector | - | |||||||||
| Charge warning light does not come on | Generator | INSPECTION | ||||||||
| ECM | MIL CIRCUIT | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Wire harness or connector | - | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| HEAD indicator does not come on(1) | Combination meter assembly | TERMINALS OF ECU | ||||||||
| Headlight dimmer switch | INSPECTION | |||||||||
| Wire harness or connector | - | |||||||||
| Brake warning light does not come on | Brake fluid level warning switch | BLEEDING | ||||||||
| Wire harness or connector | - | |||||||||
| Parking brake switch assembly | INSPECTION | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Main body ECU | TERMINALS OF ECU | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| ABS warning light does not come on(3) | Skid control ECU | BRAKE WARNING LIGHT DOES NOT COME ON | ||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| Airbag warning light does not come on | Center airbag sensor assembly | ON-VEHICLE INSPECTION | ||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| Engine oil pressure warning light does not come on | Engine oil pressure switch assembly | ON-VEHICLE INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Driver side seat belt warning light does not operate | Front seat inner belt assembly LH | INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Center airbag sensor assembly | ON-VEHICLE INSPECTION | |||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| Turn indicator light does not come on | Turn signal flasher relay | ON-VEHICLE INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Beam indicator light does not come on | Headlight dimmer switch | INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Washer level warning light does not come on | Washer level warning switch | ON-VEHICLE INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Engine coolant temperature warning light does not come on | ECM | MASS AIR FLOW METER | ||||||||
| Engine coolant temperature sensor | REMOVAL | |||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| Power steering warning light does not come on | Power steering ECU | TERMINALS OF ECU | ||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| MAINT REQD indicator light blinks or continues illuminating(1) | Resetting procedure | INITIALIZATION | ||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| Front fog light indicator light does not come on | Front fog light relay | INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Open door warning light does not come on | Door courtesy switch | INSPECTION | ||||||||
| Wire harness or connector | - | |||||||||
| Main body ECU | TERMINALS OF ECU | |||||||||
| Combination meter assembly | DATA LIST / ACTIVE TEST | |||||||||
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |||||||||
| TAIL indicator light does not come on(2) | T-LP relay | TAILLIGHT CIRCUIT | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
| Tire pressure indicator light does not come on(4) | Tire pressure warning ECU | TERMINALS OF ECU | ||||||||
| Wire harness or connector | - | |||||||||
| Combination meter assembly | TERMINALS OF ECU | |||||||||
|
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BUZZER
BUZZER
| Symptom | Suspected Area | See |
|---|---|---|
| No buzzers sound | Wire harness or connector | - |
| Combination meter assembly | WARNING BUZZER DOES NOT SOUND | |
| Seat belt warning buzzer does not sound | Front seat inner belt assembly | INSPECTION |
| Wire harness or connector | - | |
| Combination meter assembly | WARNING BUZZER DOES NOT SOUND | |
| Center airbag sensor assembly | TERMINALS OF ECU | |
| Occupant classification sensor | TERMINALS OF ECU | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Light reminder warning buzzer does not sound | Door courtesy switch | INSPECTION |
| Headlight dimmer switch | INSPECTION | |
| Wire harness or connector | - | |
| Main body ECU | DATA LIST / ACTIVE TEST | |
| Combination meter assembly | WARNING BUZZER DOES NOT SOUND | |
| Key reminder warning buzzer does not sound | Unlock warning switch assembly | KEY REMINDER BUZZER DOES NOT SOUND |
| Wire harness or connector | - | |
| Main body ECU | DATA LIST / ACTIVE TEST | |
| Combination meter assembly | WARNING BUZZER DOES NOT SOUND | |
| CAN communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Parking brake unreleased warning buzzer does not sound | Parking brake switch | INSPECTION |
| Wire harness or connector | - | |
| Main body ECU | TERMINALS OF ECU | |
| Combination meter assembly | REMOVAL |