Western Snowplows Midweight Series, Mechanic'S Manual

Page: 83 / 104

Lit. No. 48163, Rev. 00 March 15, 2016
83
TROUBLESHOOTING
SNOWPLOW PARK/TURN LAMPS*
Incorrect Operation or No Park/Turn Lamps
* Some applications may use the turn circuit for DRLs.
BASIC CHECK QUESTIONS SOLUTIONS
1 OEM park/turn lamps working Refer to vehicle owner's manual for fuse location and size.
2
All harnesses connected at vehicle and snowplow Harnesses must be connected for all snowplow and
headlamp functions.
3 Corrosion at harness connectors Replace as needed.
4 Ignition ON Ignition must be ON for snowplow turn lamps to operate.
5 Control powers up with key ON Go to Control/Cable/Plow Module Test.
6 Spliced into OEM park/turn circuit correctly Refer to Isolation Module Installation Instructions.
7
Harnesses in correct location at Isolation Module
and installed per Installation Instructions
Install using Isolation Module Installation Instructions.
8 Harness wired per drawing See electrical schematics in this guide.
9
Verify that power and ground are in proper pin
locations at Isolation Module
See electrical schematics in this guide.
10
Verify that power and ground are in proper pin
locations to vehicle headlamp
See electrical schematics in this guide.
11 Bulb burned out Replace with proper bulb.