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Home/Lexus/LS/Lexus LS III (2000-2003)/Repair manual/Communication Devices/DTC B1297: CLEARANCE SONAR ECU COMMUNICATION STOP
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DTC B1297: CLEARANCE SONAR ECU COMMUNICATION STOP Lexus LS III

Communication Devices 1 illustration

Note. DTC is output when there is no communication between clearance sonar ECU and body ECU.

Scheme 25

Scheme 25: DTC B1297: CLEARANCE SONAR ECU COMMUNICATION STOP
Scheme 25: DTC B1297: CLEARANCE SONAR ECU COMMUNICATION STOP
  1. If sonar collision system operates normally, go to next step. If sonar collision does not operate normally, replace clearance sonar ECU.
  2. Disconnect clearance sonar ECU connector. (Scheme 25) Disconnect luggage room junction block ECU 22-pin connector. see scheme 18 Check continuity of Pink/Blue wire between clearance sonar ECU connector terminal No. 1 and luggage room junction block ECU connector terminal No. 3. Repair wiring as necessary. If wiring is okay, replace clearance sonar ECU.

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