DTC U2021
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
U2021: LIN Invalid Data from ECM to Generator Transmitted data from ECM to generator via LIN is faulty. (1 D/C detection logic but MIL does not light up) |
•ECM power supply circuit and/or ground circuit
•ECM |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DTC recheck
1)Clear DTC.
2)Set ignition “OFF”.
3)Perform “DTC Confirmation Procedure” and check DTC.
Is DTC U2021 still detected?
|
Go to Step 2.
|
Check for intermittent trouble.
|
| 2 |
ECM power supply and ground circuit check
1)Check ECM power supply and ground circuits according to Step 2 of DTC P0562 / P0563:D16AA.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Repair ECM power supply and ground circuits.
|