COMPUTERS RELATED TO AUTOBODY REPAIR

TYPES OF COMPUTERS SYSTEMS n WITH DIAGNOSTIC CODES –TROUBLE CODES READ FROM SYSTEM –DIAGNOSTIC CONNECTOR –ABS, AIR BAG, PCM,BCM n WITHOUT DIAGNOSTIC CODES –NOT CODE READABLE –PIN POINT CHECKS –CRUISE CONTROL, ENTERTAINMENT

RETRIEVING DIAGNOSTIC CODES n Diagnostic Methods –Counting flashes –Reading codes on scan tool –Clear codes –Road Test Vehicle –Re-read codes again –Refer to Diagnostic Flow Charts –Clear codes after repair

Diagnosis and Testing n Flash Code n Scan Tool n Breakout Box n Pinpoint checks with DVOM n Instrument control diagnostics n Current codes (Hard codes) n Memory codes n Service Manual necessary

Memory Saver n Maintains computer memory when battery is disconnected n Must record info from radio, seat, climate control and other driver programmable electronic equipment n Air Bag circuits may still be active –disconnect air bag module

Clearing Codes n Disconnect negative battery cable n remove system fuse n turn ignition key off n Use scan tool or specialty tester

Reprogramming Computers n Re-key radio settings n seat position n climate control n other equipment

Test Drive n After Body Damage Repair –Once dash light goes out after repair –Test drive vehicle at slow and highway speeds, stop and go, accel and decel. –If no light, problem is repaired