VISUAL INSPECTION -726280339

TM 9-2320-364-20-1

Allow engine to cool before performing troubleshooting maintenance. If necessary use insulated pads

and gloves. Hot engine components will burn and cause injury to personnel.

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.

DDEC ECM connector terminals are easily damaged. Use care when connecting and disconnecting

connectors.

VISUAL INSPECTION

Check terminals at TBS connectors

(sensor side and harness side) for

damage; bent, corroded and

unseated pins or terminals.

(1) If connectors are damaged, repair

connectors (Para 7-101) and

connect TBS harness connector

to sensor connector.

(2) If connectors are free of damage,

replace TBS (Para 7-63) and

connect TBS harness connector

to sensor connector.

RESISTANCE TEST

(1) Loosen screw and disconnect engine

harness connector from DDEC ECM.

(2) Read resistance between wires 416

and 432 at engine harness connector,

terminals W1 and P1.

(a) If 10,000 ohms or less are

present, repair wires 416 and/or

432 (see schematic Fig 2-2) or

notify DS Maintenance.

(b) If more than 10,000 ohms are

present, go to Step 6 of this Fault.

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