VISUAL INSPECTION -726280375

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.

Use jumperwire only between terminals

indicated. Failure to comply may result in

damage to DDEC components or wiring.

DDEC ECM connector terminals are easily

damaged. Use care when connecting and

disconnecting connectors.

VISUAL INSPECTION

(1) Check terminal at engine harness

connector (DDEC ECM and harness

side) for damage; bent, corroded and

unseated pins or terminals.

(a) If engine harness connector is

damaged, repair connector

(Para 7-101), and perform Steps

(2) and (3) below.

(b) If DDEC ECM connector is

damaged, replace DDEC ECM

(Para 7-56).

connectors are OK, replace

DDEC ECM (Para 7-56).

(2) Close top engine access cover.

(3) Install right front fender skirt

(Para 17-33).

RESISTANCE TEST

(1) Place jumperwire between terminals

A and C at OPS harness connector.

(2) Read resistance at wires 416 and 452

at engine harness connector,

terminals W1 and Y2.

(a) If there are more than 5 ohms

present, remove jumperwire and

repair wires 416 and/or 452

(see schematic Fig 2-2) or notify

DS Maintenance.

(b) If there are less than 5 ohms

present, wires 416 and 452

are OK.

(3) Remove jumperwire.