TROUBLESHOOTING INSTRUCTIONS (CONT). -726280173

TM 9-2320-364-20-1

(l)

Generally, you will select ACTIVE CODES. Refer to the specific malfunction or condition and

referenced instructions for more information. An ACTIVE CODE display resembles:

DDEC II S60 12.7

PTO

HIGH VOLTAGE

ACTIVE CODE 12

Data Readout Window

(m) Clear DDEC codes.

CODES LAST CLEARED

AT XXXXXXX.X ENG HRS

DO YOU WANT TO CLEAR

CODES YES <- - - > [NO]

Data Readout Window

Select Mode 40 on the DDR.

Use arrow keys on the DDR to select YES.

Press ENTER.

NOTE

When ENTER has been pressed, the DDR will clear all stored codes and check the

DDEC ECM to ensure all codes are cleared. The DDR will then display the results of

the clearing function.

CODES NOT CLEARED

ENTER TO RETRY

FUNC TO EXIT

Data Readout Window

Press ENTER to retry the clearing function or FUNC to exit Mode 40.

(3)

Tools needed for DDEC diagnosis. The following tools and equipment are required to properly diagnose

a complete system:

(a)

Voltmeter and Ohmmeter: Use a digital volt-ohmmeter J-34029, or equivalent digital multimeter to

measure voltage and resistance when required. A digital multimeter must be used when specified in

the procedure.

(b)

Test Light 6V: Use when specified in the procedure.

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