STARTER FAILS TO CRANK

TM 10-3930-638-24&P

3-10. STARTER AND SOLENOID TROUBLESHOOTING (cont)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. STARTER FAILS TO CRANK (cont)

Step 2. (cont)

a. If ammeter indicates 6.5 to 7.0 amperes, remove

solenoid (para 3-13) and check for binding plunger

or defective spring.

b. If ammeter indicates more than 7.0 amperes, winding

is shorted or grounded. Replace solenoid (para 3-13).

c. If ammeter indicates less than 6.5 amperes, winding

has excessive resistance. Clean solenoid terminals

and repeat pull-in winding test. If ammeter still

indicates less than 6.5 amperes, replace solenoid

3-11. WIRING HARNESS TROUBLESHOOTING

NOTE

Refer to electrical system wiring schematic (appendix F), front

wiring harness illustration (para 3-15a), and rear wiring harness

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. MAJOR PORTION OF ELECTRICAL SYSTEM INOPERATIVE

Check for improper connection or defective connectors between front and rear wiring harnesses, IGNITION

switch and connector, and VEHICLE LIGHTS switch and connector.

If connections are correct, replace front wiring harness (para 3-15a) or rear wiring harness

2. ONE ELECTRICAL CIRCUIT INOPERATIVE

Step 1. Disconnect harness lead(s) from affected component, and use an ohmmeter to check for open circuit

caused by breaks in wiring or faulty connectors.

a. If harness wire is broken, and wire is not accessible, replace wiring harness (para 3-15).

b. If harness wire is not broken, proceed to step 2.