Douglas Dynamics Western 26470-2 Operating Instructions Manual - Page 7

Browse online or download pdf Operating Instructions Manual for Test Equipment Douglas Dynamics Western 26470-2. Douglas Dynamics Western 26470-2 14 pages. Isolation module light system

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ISOLATION MODULE TEST PROCEDURE – ALL MODULES

3. Turn ON the vehicle's parking lamps. Verify the

vehicle's parking lamps are ON.

4. Turn ON the vehicle's headlamps. Verify the

vehicle's low beams are ON.

5. Place the Isolation Module Tester PLOW

ATTACHED switch in the "ON" position. Verify the

vehicle's low beams go OFF and the following

Isolation Module Tester indicators are lit: PLOW

ATTACHED, plow PARK LIGHTS, and both plow

LOW BEAMs.

6. Place the vehicle's headlamps in the "high beam"

position. The Isolation Module Tester plow HIGH

BEAM indicators should light.

7. Turn ON the vehicle's left turn signal. Verify the

vehicle's left turn signal is functioning properly and

the Isolation Module Tester left TURN SIGNAL

indicator is lit. Turn OFF vehicle's left turn signal.

8. Turn ON the vehicle's right turn signal. Verify the

vehicle's right turn signal is functioning properly

and the Isolation Module Tester right TURN

SIGNAL indicator is lit. Turn OFF vehicle's right

turn signal.

9. Activate the vehicle's four-way flashers. Both the

vehicle's turn signal lamps and the Isolation

Module Tester TURN SIGNAL indicators should be

flashing. Turn OFF the vehicle's four-way flashers.

10. Place the Isolation Module Tester PLOW

ATTACHED switch in the "OFF" position. The

Isolation Module Tester HIGH BEAM, PARK LIGHTS

and PLOW ATTACHED indicators should go OFF

and the vehicle's high beams should be ON.

11. Place the vehicle in the DRL mode. Verify the

vehicle's DRLs are functioning properly.

Lit. No. 26473, Rev. 03

NOTE: Due to the many DRL systems available, it is

the responsibility of the installer to fully understand

the operation of the system being tested.

12. Dedicated DRLs with a 26401, 27781 or 29070

Module: Place the Isolation Module Tester PLOW

ATTACHED switch in the "ON" position.

Depending on what module you have, the

following tester indicators should light:

26401 – HIGH BEAM (Dim)

27781 – LOW BEAM (Dim)

29070 – TURN SIGNAL

Low voltage DRLs with a 26400, 26401, 27781

or 29760-1 Module: Place the Isolation Module

Tester PLOW ATTACHED switch in the "ON"

position. The vehicle's DRLs should transfer to the

Isolation Module Tester. The Isolation Module

Tester mimics the vehicle's DRLs when the PLOW

ATTACHED switch is in the "ON" position.

13. Return the Isolation Module Tester PLOW

ATTACHED switch to the "OFF" position. Place

the Isolation Module Tester POWER switch in the

"OFF" position. Turn the vehicle's ignition OFF.

The vehicle portion of the test is complete. If the

system passes, remove the Isolation Module

Tester from the vehicle.

If the system fails the vehicle portion of the test,

remove the adapter cable (PN 26472) from the

Isolation Module Tester cable. Unplug the vehicle

lighting harness from position 2 (4-port) or

position A (3-port) of the Isolation Module. Connect the

Isolation Module Tester harness 2 to position 2 (4-port)

or position A (3-port) of the Isolation Module. Rerun

the vehicle portion of the test from the beginning to

determine if the vehicle lighting harness is functioning

properly. If it is, proceed to the module test section.

November 1, 2007