VISUAL INSPECTION -726280557

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

(1) Disconnect all connectors at

DDEC ECM (Para 7-56).

(2) Check all terminals at harness

connectors (ECM and harness side)

for damage; bent, corroded and

unseated pins or terminals.

(a) If harness connector(s) is

damaged, repair connector(s)

(Para 7-101) and perform Steps (3)

through (5) below.

(b) If DDEC ECM connector is

damaged, replace DDEC ECM

(Para 7-56).

ECM harness connectors are OK,

replace DDEC ECM (Para 7-56).

(3) Connect engine harness connector to

DDEC ECM and tighten screw.

(4) Install heat shield and two screws.

(5) Close top engine access cover.

NOTE

Battery voltage surges, while cranking the

engine, may blank out or reset DDR.

DDR TEST

(1) Select MODE 31 (SRS RECEIVED)

on DDR.

(2) Observe DDR display while cranking

engine (TM 9-2320-364-10).

(a) If SRS received is not displayed in

the DDR, SRS signal is faulty, turn

OFF ENGINE switch and go to

Step 8 of this Fault.

(b) If SRS received is displayed, SRS

signal is OK. Turn OFF ENGINE

switch and go to Step 9 of

this Fault.