Note
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before performing this troubleshooting procedure, make sure to perform an on-vehicle inspection to confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*
*: w/ Door Control Battery
Tech Tips
The following problem symptoms table is based on the assumption that each system related to the combination meter assembly is normal.
Refer to System Description for details about the communication between the combination meter assembly and each ECU.
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.
| Symptom | Suspected Area | Link |
|---|---|---|
| Speedometer malfunction | Speedometer circuit | |
| Tachometer malfunction | Tachometer circuit | |
| Fuel receiver gauge display malfunction | Fuel receiver gauge display circuit | |
| Engine coolant temperature receiver gauge malfunction | Engine coolant temperature receiver gauge circuit |
| Symptom | Suspected Area | Link |
|---|---|---|
| Fuel level warning light malfunction (Fuel receiver gauge is normal) | Combination meter assembly | |
| Malfunction other than above | Combination meter assembly |
| Symptom | Suspected Area | Link |
|---|---|---|
| Multi-information display is not displayed | Combination meter assembly | |
| Engine Oil Level Low Add or Replace display malfunction*1, *2 | Engine oil level sensor circuit | |
| Oil Pressure Low Stop in a Safe Place See Owner's Manual display malfunction*2, *3 | Engine oil pressure switch circuit | |
| Malfunction other than above | Combination meter assembly |
*1: for A25A-FKS
*2: for 2GR-FKS
*3: for 2AR-FE
| Symptom | Suspected Area | Link |
|---|---|---|
| Engine oil pressure warning buzzer malfunction*1, *2 | Engine oil pressure switch circuit | |
| Malfunction other than above | Combination meter assembly |
*1: for 2GR-FKS
*2: for 2AR-FE
| Symptom | Suspected Area | Link |
|---|---|---|
| Entire combination meter does not operate | Power source circuit | |
| Operating ODO/TRIP switch (trip switch) does not change odometer/TRIP meter display | ODO/TRIP switch circuit | |
| Operating steering pad switch does not change multi-information display | Steering pad switch circuit | |
| Operating light control rheostat does not change light brightness | Light control rheostat switch circuit | |
| Meter illumination is always dark | Illumination circuit (Meter illumination is always dark) | |
| Meter illumination does not dim at night | Illumination circuit (Meter illumination does not dim at night) | |
| Meter illumination does not dim when the taillights are turned on | Combination meter assembly | |
| Other systems that use the speed signal do not operate normally | Speed signal circuit |