E 450 V10-6.8L (2008)
Trailer Lamps: Pinpoint Tests
Test R: The Trailer Lamps Are Inoperative - All
PINPOINT TEST R: THE TRAILER LAMPS ARE INOPERATIVE - ALL
Normal Operation
All of the trailer tow lamps are provided ground through circuit 206 (WH). All of the trailer tow relays share the same ground through circuit 57 (BK).
This pinpoint test is intended to diagnose the following:
-
Wiring, terminals or connectors
-
Trailer
R1