VISUAL INSPECTION -726280299

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.

DDEC ECM connector terminals are easily

damaged. Use care when connecting and

disconnecting connectors.

VISUAL INSPECTION

(1) Check terminals at vehicle harness

connector MC18 (DDEC ECM and

harness side) for damage; bent,

corroded and unseated pins or

terminals.

(a) If vehicle 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 damaged, replace

DDEC ECM (Para 7-56).

(2) Connect vehicle harness connector

MC18 to DDEC ECM and tighten

screw.

(3) Close top engine access cover.

VERIFY REPAIR

(1) Turn ON ENGINE switch

(TM 9-2320-364-10).

(2) Clear codes on DDR (Para 2-24).

(3) If CEL does not stay ON, start engine

and run for 8 minutes or until CEL

comes ON.

(a) If CHECK ENGINE light comes on

for about five seconds and then

goes off, fault has been corrected.

Perform Steps (4) and (5) below.

(b) If CHECK ENGINE light comes on

and stays on, perform Steps (4)

and (5) below and go to Fault

Index (Table 2-16).

(4) Turn OFF ENGINE switch.

(5) Disconnect DDR from DDL connector

MC13.

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