B2207

DTC B2207: Navigation Unit Lost Communication with AcuraLink Control Unit (XM Receiver)

1. Connect the HDS to the DLC.
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then turn it to ON (II) and wait 30 seconds or more.
4. Check for DTC with the HDS.

Is DTC B2207, B2208 indicated?

YES - Check the battery condition. If the system is OK, replace the AcuraLink control unit (XM receiver).

NO
- If only B2207 is indicated, go to step 5.
- If only B2208 is indicated, refer to the B2208 troubleshooting.

5. Turn the ignition switch to LOCK (0).
6. Disconnect AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector F (5P).
7. Check for continuity between the following terminals of AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector F (5P).






Is there continuity?

YES - Go to step 8.

NO - Repair open in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit.

8. Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (20P) No. 3, No. 4, No. 13, and No. 14 terminals individually.






Is there continuity?

YES - Repair short to body ground in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit.

NO - Go to step 9.

9. Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (20P) as follows.






Is there continuity between any of the terminals?

YES - Repair short in the wire(s) between the AcuraLink control unit (XM receiver) and navigation unit (replace the appropriate shielded harness).

NO - Go to step 10.

10. Turn the ignition switch ON (II), and check the same terminals for voltage.






Is there any voltage?

YES - Repair short to power in the wire(s) between the AcuraLink control unit (XM receiver) and the navigation unit.

NO - Go to step 11.

11. Turn the ignition switch to LOCK (0).
12. Reconnect AcuraLink control unit (XM receiver) connector A (20P).
13. Measure the resistance between AcuraLink control unit (XM receiver) connector A (20P) No. 3, No. 4, and No. 13, No. 14 terminals.






Is there less than about 100 kohms?

YES - AcuraLink control unit (XM receiver) is faulty, replace the AcuraLink control unit (XM receiver).

NO - Go to step 14.

14. Reconnect navigation unit connector F (5P).
15. Turn the ignition switch to ON (II).
16. Measure the voltage between the body ground and AcuraLink control unit (XM receiver) connector A (20P) No. 3, No. 4 terminals individually.






Is there less than about 3.5 V?

YES - AcuraLink control unit (XM receiver) is faulty, replace the AcuraLink control unit (XM receiver).

NO - Navigation unit is faulty, replace the navigation unit.