Western Snowplows Midweight Series, Mechanic'S Manual

Page: 82 / 104

Lit. No. 48163, Rev. 00 March 15, 2016
82
TROUBLESHOOTING
SNOWPLOW HEADLAMPS
Incorrect Operation or No Headlamps
BASIC CHECK QUESTIONS SOLUTIONS
1
Automatic headlamp function
Fully understand OEM headlamp operation; refer to
vehicle owner's manual.
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 switch or vehicle park lights must be ON for
snowplow headlamps to operate.
5 Control powers up with key ON Go to Control/Cable/Plow Module Test .
6
Correct Isolation Module kit installed for
application
Verify per Quick Match at www.westernplows.com .
7 OEM lights operating correctly prior to installation OEM headlamps must be fully operational for correct
Isolation Module operation.
8 OEM fuse tests good Replace with proper fuse.
9 Bulb burned out Replace with proper bulb.
10 Plugged into OEM headlamp correctly Connect per Isolation Module Installation Instructions.
11
Harnesses in correct location at Isolation Module
and installed per Installation Instructions
Install using Isolation Module Installation Instructions.
12
Harnesses configured correctly for HB-1/HB-5
and/or kits using adapters
Install using Isolation Module Installation Instructions.
13 Correct harnesses and/or Isolation Module in kit Refer to Isolation Module parts list.
14 Harness wired per drawing See electrical schematics in this guide.
15
Verify that power and ground are in proper pin
locations at Isolation Module
See electrical schematics in this guide.
16
Verify that power and ground are in proper pin
locations to vehicle headlamp
See electrical schematics in this guide.