TM 5-2420-231-23-1
0011
Table 1. Hard Start in Cold Temperatures (50F or Below).
0011
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 1. Verify Engine Grid
Hard Start in Cold
Heater Indicator Operation.
Temperatures (50F or
Below)
NOTE
The engine grid heater indicator will flash for 1 second when ignition
switch is turned on. At temperatures below 50F (10C), the engine grid
heater indicator stays on for 10 to 15 seconds when ignition switch is
turned on.
1. Turn ignition switch to the on posi-
Engine Grid Heater Indicator Does
tion, and observe engine grid
Not Flash for 1 Second or Illuminate
heater indicator (Figure 1, Item 1)
for 10 to 15 Seconds (Below 50F
on instrument cluster (Figure 1,
[10C]) - Diagnose engine grid heater
Item 2) (TM 5-2420-231-10).
indicator (WP 0028). Proceed to Test
Step 9 to verify symptom is resolved.
Engine Grid Heater Indicator Stays
On - Replace grid heater controller
(WP 0160).
Proceed to Test Step 9.
Engine Grid Heater Indicator Flashes
Continually - Proceed to Test Step 3.
Engine Grid Heater Indicator Flashes
for 1 Second or Illuminates for 10 to
15 Seconds (Below 50F [10C]) -
Proceed to Test Step 2.
Figure 1. Engine Grid Heater Indicator.
0011
