DDR TEST -726280359

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 personnel injury.

Use jumperwire only between terminals

indicated. Failure to comply may result in

damage to DDEC components or wiring.

DDR TEST

(1) Disconnect OPS harness connector.

(2) Turn ON ENGINE switch

(TM 9-2320-364-10).

(3) Select MODE 18 (OIL TEMP) on

DDR.

(4) Run engine until oil temperature

reading is greater than 140F

(60C).

(5) Is Code 36 or any other codes except

Code 35 displayed on DDR with OPS

connector disconnected.

(a) If Code 35 or any other code is

displayed, turn OFF ENGINE

switch and go to Step 5 of this

Fault.

(b) If Code 36 and any other code

except Code 35 is displayed, turn

OFF ENGINE switch and go to

Step 3 of this Fault.

RESISTANCE TEST

(1) Loosen screw and disconnect engine

harness connector at DDEC ECM.

(2) Place jumperwire between terminals

A and B at OPS harness connector.

(3) Read resistance between wires 452

and 530 at engine harness

connector, terminals P2 and Y2.

(a) If there are more than 5 ohms

present, remove jumperwire and

repair wires 452 and/or 530

(see schematic Fig 2-2) or

notify DS Maintenance.

(b) If there are 5 ohms or less

present, wires 452 and 530

are OK.

(4) Remove jumperwire.