TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
SYMPTOM
28.
Poor Fuel Consumption.
MALFUNCTION
Insufficient Inlet Air.
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.
Check for dirty or clogged air filters. Replace air filters (WP 0070).
STEP 3.
Check exhaust system for restrictions. Repair or replace components, as
required (WP 0068).
STEP 4.
Verify the problem has been resolved.
MALFUNCTION
Electrical Connections.
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.
Inspect/adjust engine timing sensors.
a. Inspect sensor and install and adjust if good (WP 0013).
b. If sensors are damaged, replace/adjust sensors (WP 0013).
STEP 3.
Check for correct installation of ECM to EMCP harness connector ENG-P1 to
ECM J1 and of Engine Harness connector ENG-P2 to ECM J2 (cables plugged
in to ECM) (FO-2, sheet 1 and sheet 2). Plug connectors in securely and torque
ENG-P1/J1 and ENG-P2/J2 connectors to 55 lb. in. (WP 0090).
STEP 4.
Check engine harness timing sensor connectors ENG-P4 and ENG-P5 and unit
injector connector ENG-P300/J300. Plug connectors in securely (WP 0090).
STEP 5.
Verify connections between LSM pins A4-19 and A4-20 and the ECM input ENG-
pins P1-5 and P1-66 (FO-4, sheet 2 and FO-3, sheets 1 and 2). Look specifically
for intermittent connections. Repair or replace wiring, as required (WP 0090).
STEP 6.
Verify the problem is resolved.
MALFUNCTION
Fuel Supply Problem.
CORRECTIVE ACTION
STEP 1.
Perform Injector Solenoid Test and Cylinder Cutout Test (WP 0013 SYMPTOM
8). Replace faulty injectors (WP 0114).
STEP 2.
Check for a fuel supply problem and verify fuel pressure (WP 0013, SYMPTOM
13).
0011-37
