DIC Codes Corvette ForumDIC代码克尔特论坛.docVIP

DIC Codes Submitted by Sully C5 (Moore, SC) on CorvetteF. The IPC display, the 20-character, vacuum florescent screen above the steering column that says Corvette by Chevrolet every time you turn on the key is a powerful device. DIY Service Technicians are going to be most interested in the LPG’s ability to show diagnostic trouble codes (DTC) for all the modules that transmit them. The diagnostic display mode is entered with the following Procedure: 500 1) Turn on the ignition but dont start the engine. 2) Press the reset button to turn off any warning messages 3) Press and hold options and 4) While holding options, press fuel four times within a 10-Second period. Initially, the on-board diagnostics go into the automatic mode, which shows each modules DTCs in a pre-set sequence: (Page Numbers are for the GM Service Manual) 10 PCNI Power train Control Module 357 - 6-361 28 TCS Traction Control system ABS on 86 ?? RTD Real Time damping 136 40 BCM Body Control Module 405 LTD 727 60 IPC instrument Pane! Cluster 508 80 radio 213 99 FIVAC Heater Vent-Air Conditioning 118 A0 LDCM Left Door Control module 904 to 8-951 Al RDCM Right Door Control Module 904 to 8-951 AC SCM Seat Control module 1064-8-1082 B0 RFA Remote Function Actuation 676 For each module, all DTCs will be displayed. If none are present in a module, you will see no more codes on the ICP display. There are two kinds of DTCs, Current and History, designated with a letter suffix, C or H. A current code indicates that the malfunction is present in the system whose module is displaying data. A history code indicates a problem existed in that module sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it is possible its evidence of a previous problem. Now solved, that was not removed by clearing codes. More likely it is that a history code indicates an intermittent malfunction. Intermittent are the most challenging DTCs. An intermittent may have happened only