L6: Check INST/J1962 Continuity

Locate connectors FC025 (INST) & FC053 (J1952) .

Is there continuity between FC053/006 & FC025/023?
Is there continuity between FC053/014 & FC025/048?

Yes
Go to L7

No
Repair the harness/connector FC025, FC053 & test the system for normal operation