TM-9-2320-361-20

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; UNIT MAINTENANCE

OCTOBER 1991

TM-9-2320-361-20 - Page 187 of 1207

TM 9-2320-361-20

Table 2-4. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 2. Test dimmer switch.

Step 1. Check dimmer switch input voltage.

a. Remove lead 16 from dimmer switch.

b. Check lead 16 contact end for battery voltage.

c. If voltage is present, go to step 2.

d. If voltage is not present, go to step 3.

Step 2. Check dimmer switch continuity.

a. Remove lead 17 from dimmer switch pin L. Remove lead 18 from dimmer switch pin H.

b. Set multimeter to RX1 scale. Check continuity between input pin and pin L.

c. If continuity is not found, push dimmer switch to change from HIGH to LOW. Recheck

continuity.

d. If no continuity is present, replace dimmer switch (para. 4-28).

e. If continuity was present, check continuity between pin H and input pin.

f. If continuity is present, push dimmer switch to ON position to change from LOW

to HIGH.

g. If no continuity is present, replace dimmer switch (para. 4-28).

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