DTC U0089[88] CAN Communication Malfunction (CAN 2 Bus Off) (Central GateWay)

1. Body control system check

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) diagnostic system check - central gateway controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn ON the ignition switch.

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

Yes

=>Go to eCall unit inspection.

No

Go to Intermittent conditions of body control system.

Refer to "223.Body Control 36D.Symptom(Central GateWay) intermittent conditions of body control system".

3. eCall unit inspection

1) Turn OFF the ignition switch.

2) Disconnect the eCall unit harness connector (B85).

Refer to "LHD Controller Area Network (Except Central Gateway C/U)" in the ETM (wiring diagram). (Open using the ETM viewer.).

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool for DTC U0089[88] being set as a current failure. Is a DTC set?

Yes

=>Go to Audio center unit inspection.

No

=>Go to eCall unit replacement.

4. Audio center unit inspection

1) Turn OFF the ignition switch.

2) Disconnect the audio center unit harness connector (B49).

Refer to "LHD Controller Area Network (Central Gateway C/U)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 with DPD))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 without DPD, RZ4E))" in the ETM (wiring diagram). (Open using the ETM viewer.).

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool for DTC U0089[88] being set as a current failure. Is a DTC set?

Yes

=>Go to Information CAN communication circuit inspection.

No

=>Go to Audio center unit replacement.

5. Information CAN communication circuit inspection

1) Inspect the Information CAN communication circuit for the following. Is the result normal?

Refer to "LHD Controller Area Network (Central Gateway C/U)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 with DPD))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 without DPD, RZ4E))" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Central gateway control unit replacement.

No

Repair the circuit as necessary.

=>Go to Repair verification.

6. eCall unit replacement

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit setting".

Procedure completion

=>Go to Repair verification.

7. Audio center unit replacement

Refer to "9.Body, Cab, Accessories 9C.Electrical Control, Entertainment audio and navigation system removal".

Refer to "9.Body, Cab, Accessories 9C.Electrical Control, Entertainment audio and navigation system installation".

Refer to "9.Body, Cab, Accessories 9C.Electrical Control, Entertainment audio and navigation system setting".

Procedure completion

=>Go to Repair verification.

8. Central gateway control unit replacement

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control central gateway control unit removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control central gateway control unit installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control central gateway control unit setting".

Procedure completion

=>Go to Repair verification.

9. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool.