Equus 3120 - OBD 2&1 Tool Kit - Manual (Page 21)

OBD2 & 1 19
E
General Code Retrieval Procedures
OBD1 SYSTEMS / OBD2 SYSTEMS
Procedures for Retrieving Diagnostic Trouble Codes from OBD1 sys-
tems are vehicle manufacturer specific. Each manufacturer uses their
own procedure.
Procedures for retrieving Diagnostic Trouble Codes from OBD2
systems are generic, and apply to all vehicles equipped with OBD2
systems.
From the following list, select the procedure that applies to your vehi-
cle’s OBD system, and proceed to appropriate section for detailed
code retrieval procedures.
OBD1 SYSTEMS
Most cars and light trucks (under 8500 GW) sold in the U.S. from early
1980’s to 1995 are equipped with what is known as the first generation
of On-Board Diagnostics or “OBD1”.
■ If your Chrysler/Jeep, Ford, GM or Toyota vehicle, (1995 and older)
is equipped with an ‘OBD1 System”, proceed to the proper section
as indicated below, for a detailed application list and code retrieval
procedures:
■ CHRYSLER/JEEP . . . . . . . . . . . . . . . .page 36
■ FORD . . . . . . . . . . . . . . . . . . . . . . . . .page 42
■ GM . . . . . . . . . . . . . . . . . . . . . . . . . . .page 65
■ TOYOTA . . . . . . . . . . . . . . . . . . . . . . . .page 71
OBD2 SYSTEMS
ALL 1996 and newer cars and light trucks (under 8500 GW) sold in the
U.S. are equipped with what is known as the second generation of On-
Board Diagnostics or “OBD2”.
■ If your vehicle (1996 and newer) is equipped with an “OBD2
System”, proceed to the “OBD2 SYSTEMS” section on page 20 for
a detailed application list, code retrieval procedures, Monitor status,
and Freeze Frame data information.