TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 1. Engine Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. Connect MSD and monitor coolant
1. If ET shows a lower temperature,
21. Coolant Temperature is
temperature (WP 0006 00). Start
replace instrument cluster (WP 0051
Too High - Continued.
engine (TM 5-3805-290-10) and
00).
compare cluster reading with MSD
2. If problem still exists, inspect and
reading.
replace water pump (WP 0045 00) as
necessary.
1. Check for leaks in oil cooler core (WP
1. If a leak is found, install a new oil
22. Engine Oil in Cooling
0028 00).
cooler core and change engine oil (WP
System.
0025 00).
2. If problem still exists, go to Test 2.
2. Remove cylinder head (WP 0146 00)
1. If damaged, replace cylinder head.
and inspect for signs of damage.
2. If problem still exists, replace engine
(WP 0145 00).
1. Check for leaks in oil cooler core (WP
1. If a leak is found, install a new oil
23. Coolant in Engine Oil.
0028 00).
cooler core and change engine oil (WP
0025 00).
2. If problem still exists, go to Test 2.
2. Remove cylinder head (WP 0146 00)
1. If damaged, replace cylinder head.
2. If problem still exists, replace engine
and inspect for signs of damage.
(WP 0145 00).
1. Connect MSD (WP 0006 00).
1. If engine ECM does not communicate
24. Engine ECM Will Not
with ET, refer to Malfunction 25, MSD
Communicate with Other
Will Not Communicate with Engine
Systems or Display
ECM in this work package.
Modules.
2. If problem still exists, go to Test 2.
2. Ensure these items are correctly
If problem still exists, perform CAT Data
installed and undamaged (refer to
Link Circuit Test (WP 0013 00).
Electrical Connectors Inspection [WP
0022 00]):
(a) J1/P1 engine ECM connector (WP
0053 00).
(b) J20/P20 MIC (WP 0170 00).
(c) Wiring to Instrument Cluster (WP
0051 00).
(d) Wiring to other control modules
(WP 0052 00 and WP 0053 00).
