VISUAL INSPECTION -726280573

TM 9-2320-364-20-1

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.

Allow engine to cool before performing

troubleshooting maintenance. If necessary

use insulated pads and gloves. Hot engine

components will burn and cause personnel

injury.

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.

NOTE

The following steps should only be

used if troubleshooting was started

at DDEC II Troubleshooting (All Conditions)

and you were referred here.

VISUAL INSPECTION

(1) Loosen screw and disconnect vehicle

harness connector MC18 at

DDEC ECM.

(2) Place jumperwire between terminal B2

at vehicle harness connector MC18

and a known good ground.

(3) Turn ON ENGINE switch

(TM 9-2320-364-10).

(4) Is CGL OFF with jumperwire installed

at vehicle harness connector MC18?

(a) If CGL is ON, remove jumperwire,

turn OFF ENGINE switch and go

to Step 4 of this fault.

(b) If CGL is OFF, remove

jumperwire, turn OFF ENGINE

switch and go to Step 2 of this

Fault.