ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START BELOW 32F (0C) (cont) -624880097

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. ENGINE CRANKS BUT FAILS TO START OR IS HARD TO START BELOW 32F (0C) CONTINUED

WARNING

Although ignition lock switch must be on and battery ground cable connected to test electrical circuit

voltage, turn off ignition lock switch and disconnect battery ground cable before doing resistance tests

or replacing parts. This will keep you from getting shocked and prevent damage to parts and

equipment.

Step 10.

Using multimeter set to 30 vdc scale, place red probe on engine starting aid solenoid connector

terminal (1) and black probe on box (2). Have assistant press in and hold engine starting aid

solenoid switch (3) for a few seconds. Check for 11 to 13 vdc on multimeter.

a. If multimeter reads 11 to 13 vdc, go to step 11.

b. If multimeter reads less than 11 vdc, turn ignition lock switch (4) counterclockwise to off and

replace engine starting aid solenoid switch (page 2-604).

Step 11.

Using multimeter set to 30 vdc scale, place red probe on solenoid wire terminal (5) and black probe

on cylinder head (6) or hood (7). Have assistant press in and hold engine starting aid solenoid

switch (3) for a few seconds. Check for 11 to 13 vdc on multimeter. Have assistant turn ignition

lock switch (4) counterclockwise to off.

a. If multimeter reads 11 to 13 vdc, go to step 12.

b. If multimeter reads less than 11 vdc, repair wire between terminal (5) and connector terminal (1)

Step 12.

Using multimeter set to Rxl scale, place red probe on solenoid wire terminal (8) and black probe on

solenoid wire terminal (9). Check for 0 ohm on multimeter.

a. If multimeter reads 0 ohm, replace engine starting aid fluid injection solenoid (page 2-296).

b. If multimeter reads more than 0 ohm, repair wire between terminals (8 and 9) (page 2-137).

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