
TROUBLESHOOTING AND ELECTRICAL SYSTEM
Test Procedures
2005 FE350 Gasoline Vehicle Maintenance and Service Supplement
Page 11-51
11
TEST PROCEDURE 38 – PARK BRAKE LIMIT SWITCH
See General Warning, Section 10, Page 10-1.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning, Section 10, Page 10-1.
2. Using a multimeter set to 200 ohms, place the probes onto the two terminal screws securing the brown
and red/white wires to the switch located at the top of brake pedal assembly
(Figure 11-54, Page 11-51)
.
3. With the brake pedal released, the multimeter should indicate continuity.
4. With the brake pedal pressed, the multimeter should indicate no continuity.
5. If the readings are incorrect, replace the limit switch.
TEST PROCEDURE 39 – BRAKE PEDAL LIMIT SWITCH
See General Warning, Section 10, Page 10-1.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning, Section 10, Page 10-1.
2. Using a multimeter set to 200 ohms, and with alligator clips on the multimeter probes, place the probes
onto the two terminal screws securing the green/white and red/white wires to the limit switch located
under the floorboard
(Figure 11-55, Page 11-51)
.
3. Release the brake. The reading should show no continuity.
4. Press the brake, making sure the park brake is engaged. The reading should show continuity.
5. If the readings are incorrect, check continuity of the 16-gauge orange/white wire from the brake pedal
switch to the park brake switch. Check continuity of the 16-gauge green/white wire from the brake pedal
switch to the fuse block.
6. If wire continuity is correct and the switch continuity readings are still incorrect, replace the switch.
See
Brake Pedal Limit Switch Removal, Section 12, Page 12-35.
Figure 11-54 Check Park Brake Limit Switch Circuit
Figure 11-55 Check Brake Pedal Limit Switch Circuit
PARK BRAKE
LIMIT SWITCH
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
200 OHM
SETTING
BRAKE PEDAL
LIMIT SWITCH
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
200 OHM
SETTING