DDEC TROUBLESHOOTING
4.3
READING CODES WITH DIAGNOSTIC DATA READER
Flash codes are used for operator convenience to advise of an engine fault or sensor failure. SAE
specific codes are read with the Diagnostic Data Reader (DDR). In some cases, one flash code
may be used to cover more than one component fault. For this reason the DDR (or Diagnostic
Data Link, DDL) must be used to identify the specific code.
The Diagnostic Code Menu selections are defined as follows.
Active codes
Inactive codes
Clear codes
To read codes, start with the Menu Selection screen.
1. To call up active codes:
[a] Select ENGINE and ENTER three times.
2. To call up inactive codes:
[a] Select ENGINE and ENTER twice.
[b] Select INACTIVE CODES and ENTER.
3. To clear codes:
[a] Select ENGINE and push ENTER twice.
[b] Go down and select CLEAR CODES and ENTER.
[c] Left to YES, and ENTER.
[d] Wait and then push FUNC three times.
[e] Go to lines 1 and 2 of the Engine Data List, Active and Inactive Codes, and verify
that both lines display NO.
4.3.1
Active Codes
Active codes are conditions that are presently occurring and causing the CEL to be illuminated.
All current active codes will be displayed for the entire system, including single, dual and triple
ECM applications. The display for each code is as follows:
Line 1: ## MID: XXX XXXXXXXX
Line 2: PID Description
Line 3: FMI Description
Line 4: A## PID: XXX FMI: XX
Explanation:
##: Indicates the DDC diagnostic flash code number
MID: Message Identification Character
PID: Parameter Identification Character
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
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