TM-5-4210-249-13-P-2
TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142
TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 2 OF 4
TM-5-4210-249-13-P-2 - Page 29 of 1452
TM 5-4210-249-13&P-2
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DRAFT
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TFFT02544
Step 9.
Turn battery disconnect switch to OFF position (WP 0007).
Remove personnel cab
instrument panel C (WP 0311).
Disconnect cab instrument panel wire harness switch
connector from non-operating switch connector.
Turn battery disconnect switch to ON
position (WP 0007).
Check for 22 to 28 VDC between cab instrument panel wire
harness wire 1018 (violet) at non-operating cab instrument panel wire harness switch
connector, terminal 7 and a known good ground.
If 22 to 28 VDC are not present, repair wire 1018 in cab instrument panel
wire harness if repairable (TM 9-2320-325-14&P), or replace cab instrument
panel wire harness (WP 0440).
Step 10.
Turn Service Drive Lights Off (TM 9-2320-347-10).
Turn battery disconnect switch to
OFF position (WP 0007).
Check for continuity across cab instrument panel wire
harness wire 1027 (black) from non-operating cab instrument panel wire harness switch
connector, terminal 8 to a known good ground.
a.
If there is continuity, replace non-operating rocker switch (WP 0315).
b.
If there is no continuity, repair wire 1027 in cab instrument panel wire
harness if repairable (TM 9-2320-325-14&P), or replace cab instrument
panel wire harness (WP 0440).
Step 11.
Check if any backlights on cab instrument panel switches illuminate.
If all backlights on cab instrument panel switches do not illuminate, go to
Step 14.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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