Workman MDX--D
Electrical System
Page 5 -- 13
Brake Switch
The brake switch is a normally closed switch that opens
when the brake pedal
is not
applied. When the brake
pedal
is
applied, the brake pedal moves away from the
switch plunger to allow the switch to be in its normally
closed state. The brake switch is attached to the pedal
support frame under the dash panel (Fig. 16).
Testing
1. Park vehicle on a level surface, stop engine, apply
parking brake and remove key from ignition switch.
2. Locate brake switch for testing. Disconnect vehicle
wire harness electrical connector from the brake switch.
3. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the connector termi-
nals.
4. When the switch plunger is extended (brake pedal
is
applied), there should be continuity (closed) between
the switch terminals.
5. When the switch plunger is depressed (brake pedal
is not
applied), there should not be continuity (open) be-
tween the switch terminals.
6. Replace brake switch if testing determines that it is
faulty. When installing switch, make sure that the brake
pedal does not bottom switch when the pedal is re-
leased.
7. If the brake switch tests correctly and a circuit prob-
lem still exists, check wire harness (see Electrical
Schematic and Circuit Drawings in Chapter 7 -- Electric-
al Drawings).
8. When switch testing is completed, connect switch
connector to vehicle wire harness.
1. Brake pedal assembly
2. Brake switch
Figure 16
1
2
El
ec
tri
cal
Sy
st
em
Summary of Contents for Workman MDX-D
Page 2: ...Workman MDX D This page is intentionally blank...
Page 4: ...Workman MDX D This page is intentionally blank...
Page 12: ...0 09375 Workman MDX D Page 2 2 Product Records and Maintenance Equivalents and Conversions...
Page 20: ...Workman MDX D Page 3 4 Diesel Engine This page is intentionally blank...
Page 53: ...Workman MDX D Drive Train Page 4 19 This page is intentionally blank Drive Train...
Page 129: ...Workman MDX D Page 6 27 Chassis This page is intentionally blank Chassis...
Page 150: ...Workman MDX D Page 6 48 Chassis This page is intentionally blank...
Page 152: ...Page 7 2 Workman MDX D Electrical Drawings This page is intentionally blank...
Page 153: ...Page 7 3 Electrical Schematic Workman MDX D Relays are shown as de energized...
Page 154: ...Page 7 4 Glow Plug Circuits Power Current Control Current Indication Current...
Page 155: ...Page 7 5 Start Circuits Power Current Control Current Indication Current...
Page 156: ...Page 7 6 Run Circuits Power Current Control Current Indication Current...
Page 157: ...Page 7 7 This page is intentionally blank...
Page 158: ...Page 7 8 Main Electrical Harness Workman MDX D Wiring Drawing...
Page 160: ...Page 7 10 Engine Electrical Harness Workman MDX D BROWN BLACK FUSIBLE LINK RED BLUE WHITE BLUE...