DTC U1802[86] Invalid Data Received From TCCM (ABS/ESC)

1. Brake control system check

Refer to "54.Brake Control 4A.Troubleshooting(ABS/ESC) diagnostic System Check - Brake Controls".

2. Prioritized DTC check

1) Turn OFF the ignition switch.

2) Connect the scan tool.

3) Turn ON the ignition switch.

4) Observe the TCCM DTC information on the scan tool. Is a DTC set?

Yes

Go to the applicable DTC diagnosis.

No

=>Go to Repair verification.

3. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch.

3) Start the engine.

4) Observe the DTC information with a scan tool.