DTC Troubleshooting: U1297, U128F (BSI Radar Unit)

DTC Troubleshooting: U1297, U128F

DTC U1297: Left Side BSI Radar Unit Lost Communication With Right Side BSI Radar Unit
DTC U128F: Right Side BSI Radar Unit Lost Communication With Left Side BSI Radar Unit

NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description	DTC
U1297 Left side BSI radar unit lost communication with right side BSI radar unit
U128F Right side BSI radar unit lost communication with left side BSI control unit

Problem verification:

Problem verification

?1.	Turn the vehicle to the ON mode.

?2.	Clear the DTC with the HDS.

?3.	Turn the vehicle to the OFF (LOCK) mode.

?4.	Turn the vehicle to the ON mode, then wait for at least 2 seconds.

?5.

Check for DTCs with the HDS.

DTC Description	DTC
U1297 Left side BSI radar unit lost communication with right side BSI radar unit
U128F Right side BSI radar unit lost communication with left side BSI control unit

Is DTC U1297 or U128F indicated?


	YES

Go to the multiplex integrated control system general troubleshooting. If the symptom is still present, replace the appropriate BSI radar unit.?


	NO

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?