DTC B1802
Precautions: Precautions for Body, Cab and Accessories · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1802: Power Supply Voltage Too Low Voltage across “MTR” fuse is less than lower limit voltage (8.0 V) for specified or longer time. |
•Combination meter power supply circuit
•Combination meter ground circuit •Combination meter |
Circuit Diagram
| [A]: | Combination meter connector (View: [a]) | 1. | “DOME” fuse | 4. | Combination meter |
| [B]: | Non-ENG A-STOP model | 2. | “RADIO 2” fuse | 5. | Voltage regulator circuit |
| [C]: | ENG A-STOP model | 3. | “MTR” fuse | 6. | CPU |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DTC check
1)Clear DTC.
2)Check that ignition is “OFF”.
3)Set ignition “ON”.
4)Check DTC.
Is DTC B1802 still detected?
|
Go to Step 2.
|
Check for intermittent trouble.
|
| 2 |
Combination meter power supply and ground circuit check
1)Check combination meter power supply and ground circuits.
Is check result OK?
|
Go to Step 3.
|
Repair defective wire harness.
|
| 3 |
Combination meter power supply voltage check
1)Check power supply voltage with engine speed at 3,000 rpm.
Is voltage 10 – 15 V?
|
Replace combination meter and recheck DTC.
|
Check charging system.
•M16A model:
•D16AA model: •K14C model: |