TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 6.
Verify continuity between auxiliary fuel pump valve (AFPV) pin 2 and TB5-21
STEP 7.
Measure resistance between AFPV-1 and TB5-21. If resistance not between 40
and 80 ohms, replace AFPV (WP 0058).
STEP 8.
Verify the problem has been resolved.
MALFUNCTION
Fuel Level Switch Assembly.
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
Measure resistance between fuel level switch assembly FL2B at J8-2 and relay
AFPR-8. If not less than 2 ohms, repair or replace wire harness (WP 0090).
STEP 3.
Measure resistance between fuel level switch assembly FL2B at J8-1 and AUX
FUEL pump switch (AFPS) pin 1 (FO-1, sheet 3 and FO-4, sheet 5). If not less
than 2 ohms, repair or replace wire harness (WP 0090).
STEP 4.
Check for continuity between J8-3 and AFPR pin 14.
a. If continuity exists, proceed to step 5.
b. If continuity does not exist, troubleshoot wiring (WP 0090).
STEP 5.
Unplug connector P8 from fuel level switch assembly FL2 (WP 0055).
STEP 6.
If fuel tank level indicator on EMCP shows between 3/4 and FULL, measure
continuity between J8-1 and J8-2. If not open circuit, replace fuel level switch
assembly (WP 0055).
STEP 7.
If fuel tank level is between 3/4 and FULL, measure continuity between J8-3 and
J8-2. If not open circuit, replace fuel level switch assembly (WP 0055).
STEP 8.
If fuel tank level is below 1/2, measure continuity between J8-1 and J8-2. If not
short circuit, replace fuel level switch assembly (WP 0055).
STEP 9.
If fuel tank level is below 1/2, measure continuity between J8-2 and J8-3. If not
short circuit, replace fuel level switch assembly (WP 0055).
STEP 10.
If fuel tank level is above 5/8 measure continuity between J8-3 and J8-2. If not
open circuit, replace fuel level switch assembly (WP 0055).
STEP 11.
Verify the problem has been resolved.
0011-40
