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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 257 (Navigation System (Hybrid) - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2)) >> NAVIGATION SYSTEM (for HV Model) >> DTC B15D0: MOST Communication Malfunction [06/2018 - 09/2022] >> Check Point

Check Point

WARNING: This page is about a different car, the 2022 Lexus ES 300h, 2021 Lexus ES 300h, 2020 Lexus ES 300h, and 2019 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

MOST Network Outline 

Fig 1: MOST Network Outline Diagram
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MOST LINE CHECK RESULT PATTERN

Pattern Device Name Result Trouble Area Inspection
1 DCU OK a, c Inspect MOST communication line between "DCU" and "AMP"
AMP OK
2 DCU OK b, c Inspect wake up communication line between "DCU" and "AMP"
AMP NCON