RESISTANCE TEST -726280389

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.

RESISTANCE TEST

(1) Place jumperwire between terminals

A and B at the TRS harness

connector.

(2) Read resistance between wires 109

and 110 at engine harness connector,

terminals T1 and T2.

(a) If there are more than 5 ohms

present, remove jumperwire and

repair wires 109 and/or 110

(see schematic Fig 2-2) or

perform Step (3) below and notify

DS Maintenance.

(b) If there are less than 5 ohms

present, wires are OK, remove

jumperwire and perform Step (3)

below.

(3) Connect engine harness connector

and tighten screw.

VISUAL INSPECTION

(1) Check TRS terminals and connectors

(harness and TRS side) for damage;

bent, corroded or unseated pins or

terminals.

(a) If connectors and/or terminals are

damaged, repair connector

(Para 7-101).

(b) If connectors and/or terminals are

free from damage, notify DS

Maintenance.

(2) Connect TRS harness connector.

(3) Install DDEC ECM (Para 7-56).

(4) Close engine access cover.