Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-46
6.3.4 ROS Assembly failure continued
6. ROS HARNESS ASSEMBLY ANALYSIS
Disconnect J12 on the MCU PWB and J112 and J114 on the ROS.
Is there continuity (0
ΩΩ
) between all wires on J12 and J112 and J114?
Yes No
Go to Step 7. Replace the ROS Harness Assembly.
7. SOS HARNESS ASSEMBLY ANALYSIS
Disconnect J19 on the MCU PWB and J113 on the ROS.
Is there continuity (0
ΩΩ
) between all wires on J19 and J113?
Yes No
Replace the ROS Assembly. Replace the ROS Harness Assembly.
8. Is fault code U2 displayed in the LCD after you replaced the ROS Assembly?
Yes No
Go to Section 6.3.22 Noise. Problem solved.