Tech Tips
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 | See page |
|---|---|---|
| Entire combination meter assembly does not operate | Refer to troubleshooting |
| Symptom | Suspected Area | See page |
|---|---|---|
| Speedometer malfunction | Refer to troubleshooting | |
| Tachometer malfunction | Refer to troubleshooting | |
| Fuel gauge malfunction | Refer to troubleshooting | |
| Engine coolant temperature gauge malfunction | Refer to troubleshooting |
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear fog indicator light does not come on (Headlight system is normal) | Fuse (RR FOG) | - |
| RR FOG relay | ||
| Rear fog light control unit relay assembly | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| ES start indicator light does not come on*1 | Wire harness or connector | - |
| Electric vehicle control ECU assembly | ||
| Combination meter assembly | ||
| PTO indicator light does not come on*2 | Wire harness or connector | - |
| Power take-off indicator switch assembly | ||
| Combination meter assembly | ||
| Turn indicator light does not come on | Turn signal flasher assembly | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Beam indicator light does not come on | Headlight dimmer switch | |
| Fuse (H-L RH HI) | - | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Exhaust brake indicator light does not come on | CAN communication system | |
| Electric vehicle control ECU assembly | ||
| Combination meter assembly | ||
| Glow indicator light does not come on | Refer to troubleshooting | |
| Combination meter assembly | ||
| Engine oil pressure warning light does not come on | CAN communication system | |
| Engine oil pressure switch assembly | ||
| Combination meter assembly | ||
| Driver side seat belt warning light does not operate | Refer to troubleshooting | |
| Combination meter assembly | ||
| Brake warning light does not come on | Refer to troubleshooting | |
| Combination meter assembly | ||
| Cab tilt warning light does not come on | LED check | |
| Tilt cab control switch | - | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| ABS warning light does not come on | LED check | |
| Refer to troubleshooting | ||
| Combination meter assembly | ||
| Sediment warning light does not come on | LED check | |
| CAN communication system | ||
| ECM | ||
| Combination meter assembly | ||
| Charge warning light does not come on | LED check | |
| Wire harness or connector | - | |
| Generator assembly (for 60A Type) | ||
| Generator assembly (for 80A Type) | ||
| Combination meter assembly | ||
| SRS warning light does not come on | LED check | |
| Refer to troubleshooting | ||
| Combination meter assembly | ||
| DPF warning light does not come on | ECM | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Front fog indicator light does not come on (Headlight system is normal) | Fuse (FR FOG) | - |
| FOG relay | - | |
| Headlight dimmer switch | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| ECO drive indicator light does not come on | CAN communication system | |
| ECM | ||
| Combination meter assembly | ||
| PKB indicator light does not come on | Parking brake switch assembly | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| VCS ECU warning light does not come on | Wire harness or connector | - |
| Electric vehicle control ECU assembly | ||
| Combination meter assembly | ||
| MIL does not come on | Refer to troubleshooting | |
| Combination meter assembly |
*1: w/ ES Start System
*2: for Power Take-off Electric Type
| Symptom | Suspected Area | See page |
|---|---|---|
| No buzzers sound | Combination meter assembly | |
| Seat belt warning buzzer does not sound (Driver side seat belt warning light does not operate) | Driver side seat belt warning light circuit | |
| Combination meter assembly | ||
| PKB ON warning buzzer does not sound | Parking brake switch assembly | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| DPF warning buzzer does not sound | CAN communication system | |
| ECM | ||
| Combination meter assembly | ||
| ES start system buzzer does not sound*1 | CAN communication system | |
| Electric vehicle control ECU assembly | ||
| Combination meter assembly | ||
| Brake system buzzer does not sound | Refer to troubleshooting | |
| Cab tilt warning buzzer does not sound | Tilt cab control switch | |
| Wire harness or connector | - | |
| Combination meter assembly |
*1: w/ ES Start System