DTC U0159[00] Lost Communication With Parking Aid (Information Module)

1. Information module system check

Refer to "64.Body Control 10I.Troubleshooting(Information Module) diagnostic system check - information module".

2. Programming verification

1) Connect the scan tool.

2) Display the Vehicle Configuration All Data Setting / Change on the scan tool and verify that the equipped ECU information is programmed correctly.

3) If it is not programmed correctly, reprogram the correct value.

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control information module setting".

Procedure completion

=>Go to Current DTC check.

3. Current DTC check

1) Turn OFF the ignition switch.

2) Turn ON the ignition switch and wait for 5 seconds or more.

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

Yes

=>Go to Parking aid system control unit communication verification.

No

Go to Intermittent conditions of information module.

Refer to "223.Body Control 36D.Symptom(Information Module) Intermittent Conditions of Information Module".

4. Parking aid system control unit communication verification

1) Verify that communication can be established with the parking aid system control unit using the scan tool. Can communication with the parking aid system control unit be established?

Yes

=>Go to Parking aid system control unit DTC check.

No (Models with radar sensors/stereo cameras)

Go to Lost communication with the parking aid system control unit.

Refer to "75.Driver Assistance System 10W.Troubleshooting(Parking Aid) lost communication with the parking aid system control unit (models with radar sensor/ stereo camera)".

No (Models without radar sensors and stereo cameras)

Go to Lost communication with the parking aid system control unit.

Refer to "75.Driver Assistance System 10W.Troubleshooting(Parking Aid) lost communication with the parking aid system control unit (models without radar sensor and stereo camera)".

5. Parking aid system control unit DTC check

1) Observe the parking aid system control unit DTC information with a scan tool. Is a parking aid system control unit DTC set?

Yes

Go to the applicable DTC diagnosis.

No

=>Go to CAN communication circuit inspection.

6. CAN communication circuit inspection

1) Inspect the CAN Low circuit and CAN High circuit between the information module (pins 11 and 23 of C105) and the parking aid system control unit (pins 5 and 6 of C16) 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 "LHD Controller Area Network (Except 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 Parking aid system control unit harness connector inspection.

No

Repair the circuit as necessary.

=>Go to Repair verification.

7. Parking aid system control unit harness connector inspection

1) Inspect for poor connections at the parking aid system control unit harness connector (pins 5 and 6 of C16). Is the connection status normal?

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

Refer to "LHD Controller Area Network (Except 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 Information module harness connector inspection.

No

Repair the connections as necessary.

=>Go to Repair verification.

8. Information module harness connector inspection

1) Inspect for poor connections at the information module harness connector (pins 11 and 23 of C105). Is the connection status normal?

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

Refer to "LHD Controller Area Network (Except 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

Replace the parking aid system control unit.

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control parking aid system control unit removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control parking aid system control unit installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control parking aid system control unit setting".

=>Go to Current DTC follow-up check.

No

Repair the connections as necessary.

=>Go to Repair verification.

9. Current DTC follow-up check

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

2) Turn ON the ignition switch and wait for 5 seconds or more.

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

Yes

=>Go to Information module replacement.

No

=>Go to Repair verification.

10. Information module replacement

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control information module removal".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control information module installation".

Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control information module setting".

Procedure completion

=>Go to Repair verification.

11. Repair verification

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

2) Turn ON the ignition switch and wait for 5 seconds or more.

3) Observe the DTC information with a scan tool.