TM 5-2420-231-23-1
0011
Table 1. Hard Start in Cold Temperatures (50F or Below) - Continued.
011
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Using a digital multimeter, mea-
Hard Start in Cold
Resistance 12.5 to 16.5 Ohms -
sure resistance between cold start
Proceed to step 7.
Temperatures (50F or
temperature switch wiring harness
Below) - Continued
Resistance Less Than 12.5 Ohms or
connector (WP 0007, Figure 7) ter-
Greater Than 16.5 Ohms - Replace
minals 1 and 2. Resistance should
high-pressure fuel pump (WP 0142).
be 12.5 to 16.5 ohms.
Proceed to Test Step 9.
7. Using a digital multimeter, mea-
Engine Coolant Temperature Above
sure resistance between cold start
50F and Resistance 5.0 Ohms or
temperature switch (WP 0007,
Less - Cold start temperature switch
Figure 8) terminals 1 and 2. Resis-
OK.
tance should be 5.0 ohms or less
Proceed to Test Step 5.
at engine coolant temperatures
Engine Coolant Temperature Above
above 50F, or no continuity at
50F and No Continuity - Replace cold
coolant temperatures 50F or
start temperature switch
below.
(WP 0143).
Proceed to Test Step 9.
Engine Coolant Temperature 50F or
Below and Resistance Greater Than
5.0 Ohms - Cold start temperature
switch OK.
Proceed to Test Step 5.
Engine Coolant Temperature 50F or
Below With Continuity - Replace cold
start temperature switch (WP 0143).
Proceed to Test Step 9.
0011-10