12
Test Procedures
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
REAR VIEW
FRONT VIEW
B
S
I
A
Continuity Diagram
B
S
I
A
B
S
I
A
B
S
I
A
B
S
I
A
Key Position
PRE-
HEAT
O
OFF
I
ON
START
2108
Figure 12-9 Key Switch Terminals and Continuity Diagram
6.
Check the B and I terminals.
6.1.
Use alligator clips to connect the multimeter probes between the B and I terminals. With the key in the
START position, the multimeter should indicate continuity
. If the multimeter
does not indicate continuity, the key switch has failed and should be replaced.
6.2.
If the multimeter indicates continuity between the B and I terminals with the key in any position other
than the START or the ON position, the key switch has failed and should be replaced.
7.
Check the B and S terminals.
7.1.
Use alligator clips to connect the multimeter probes between the B and S terminals. With the key in the
START position, the multimeter should indicate continuity
. If the multimeter
does not indicate continuity, the key switch has failed and should be replaced.
7.2.
If the multimeter indicates continuity between the B and S terminals with the key in any position other than
START, the key switch has failed and should be replaced.
See Key Switch Removal on page 14-7.
TEST PROCEDURE 5 – Key Switch (ON Position)
See General Warnings, Section 1, Page 1-2.
1.
Disconnect battery.
See Side-Post Battery: Disconnecting the Battery – Gasoline/Diesel Vehicles on page
1-3.
See Top-Post Battery: Disconnecting the Battery- Gasoline/Diesel Vehicles on page 1-4.
2.
Ensure that the key switch connector is connected correctly and is tight. If it is not, repair or replace as necessary.
3.
Remove the key switch.
See Key Switch Removal on page 14-7.
4.
Set the multimeter to 200 ohms.
5.
Check the B and I terminals.
5.1.
Use alligator clips to connect the multimeter probes between the B and I terminals. With the key switch in
the ON position, the multimeter should indicate continuity
. If the multimeter does
not indicate continuity, the key switch has failed and should be replaced.
5.2.
If the multimeter indicates continuity between the B and I terminals with the key in any position other than
START or ON, the key switch has failed and should be replaced.
See Key Switch Removal on page 14-7.
Page 12-16
2016 Carryall 1500/1700 and XRT 1550 Maintenance and Service Manual
Summary of Contents for Carryall 1500 2016
Page 2: ......
Page 432: ...NOTES...
Page 433: ...NOTES...
Page 434: ...NOTES...
Page 435: ......
Page 436: ......