TROUBLESHOOTING AND ELECTRICAL
SYSTEM: GASOLINE VEHICLES
Test Procedures
11
TEST PROCEDURE 5 – Key Switch (Starter Circuit)
See General Warnings, Section 1, Page 1-2.
1.
Disconnect battery and spark plug wire(s).
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 13-8.
4.
Set the multimeter to 200 ohms.
5.
With the key switch in the ON position, place the red (+) probe of the multimeter on the (B) terminal and the black
(–) probe on the (S) terminal of the key switch. The reading should indicate no continuity. If the reading indicates
continuity, replace the key switch.
See Key Switch Removal on page 13-8.
If the reading does not indicate
continuity, leave the probes connected and proceed to step 7.
6.
Turn and hold the key switch in the START position. The reading should indicate continuity. If the reading does not
indicate continuity, replace the key switch
. Place the red (+) probe of the multimeter on
the (B) terminal and the black (–) probe on the (L) terminal of the key switch, the reading should not indicate
continuity. If either reading is not correct, replace the key switch.
See Key Switch Removal on page 13-8.
TEST PROCEDURE 6 – Starter Control Circuit
See General Warnings, Section 1, Page 1-2.
1.
Disable the vehicle.
See Disabling the Vehicle on page 1-3.
2.
Disconnect the 16-gauge green wire (w127) from the starter solenoid coil to prevent the vehicle from
unintentionally starting
See following WARNING.
WARNING
• Failure to disconnect the wire from the solenoid coil could result in an unexpected engine start
when performing this test.
3.
Set the multimeter to 20 VDC.
4.
Place the probes to measure the voltage between the 16-gauge green wire (w127) terminal and the frame ground.
5.
Monitor the multimeter. The reading should indicate 0 volts with the key in the OFF and ON positions. The
reading should indicate approximately 12 VDC when the key is in the START position.
2016 Carryall 1500/1700 and XRT 1550 Maintenance and Service Manual
Page 11-15
Summary of Contents for Carryall 1500 2016
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