TM 5-2420-231-23-1
0028
Table 1. Engine Grid Heater Indicator Fault - Continued.
028
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Observe engine grid heater indica- Engine Grid Heater Indicator Does
Engine Grid Heater Indicator
tor.
Fault - Continued
Not Flash for One Second and/or
Illuminates for 10 to 15 Seconds
(below 50F [10C]) - Replace
instrument cluster (WP 0177).
Proceed to Test Step 10.
Engine Grid Heater Indicator Flashes
for One Second and/or Illuminates
for 10 to 15 Seconds (below 50F
[10C]) - Troubleshooting complete.
Test Step 10. Verify That Symptom Is
Resolved.
1. Ensure that all wiring harness con-
nectors are reconnected.
2. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
3. Observe engine grid heater indica- Engine Grid Heater Indicator Does
tor.
Not Flash for One Second and/or
Illuminates for 10 to 15 Seconds
(below 50F [10C]) - Repeat
troubleshooting from the beginning.
Engine Grid Heater Indicator Flashes
for One Second and/or Illuminates
for 10 to 15 Seconds (below 50F
[10C]) - Troubleshooting complete.
END OF WORK PACKAGE
0028-8