DTC U0055[88] CAN Bus Communication Error (Air Bag (Driver/Passenger))

1. SRS system check

Refer to "58.SRS Control 8A.Troubleshooting(Air Bag (Driver/Passenger)) diagnostic system check-SRS controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn OFF the ignition switch for 15 seconds or more.

3) Turn ON the ignition switch.

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

Yes (Models with radar sensors)

Referring to DTC U0055[88] in the central gateway control unit, inspect the CAN circuit.

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) DTC U0055[88] CAN Communication Malfunction (CAN 5 Bus Off)".

Yes (Models without radar sensors)

=>Go to CAN communication system inspection.

No

Go to Intermittent conditions of SRS control.

Refer to "209.Restraints 22D.Symptom Intermittent conditions of SRS control".

3. CAN communication system inspection

1) Perform Scan tool does not communicate with CAN device.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) scan tool does not communicate with CAN device (models without radar sensor and stereo camera)".

Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) scan tool does not communicate with CAN device (models without radar sensor and stereo camera)".

Procedure completion

=>Go to Repair verification.

4. Repair verification

1) Reconnect all of the disconnected harness connectors.

2) Clear the DTC with a scan tool.

3) Turn OFF the ignition switch for 15 seconds or more.

4) Turn ON the ignition switch.

5) Observe the DTC information with a scan tool.