Equus 3173 - Import Code Reader - Manual (Page 40)

Toyota/Lexus
OVERVIEW OF TOYOTA/LEXUS DIAGNOSTIC SYSTEMS
37 Chapter 5
OVERVIEW OF TOYOTA/LEXUS DIAGNOSTIC SYSTEMS
• Retrieving codes from Toyota/Lexus
vehicles requires connecting either the
round or square end of code retrieval
tool (Figure T1) to vehicle’s test
connector.
• To retrieve codes, you will need to access
your vehicle’s computer test connector.
Round Connector (T2): Used on older model
cars and vans. Yellow or green in color,
located under the hood.
• Front corner (right or left)
• Fender well (right or left)
• Fire wall (right or left)
It may have a protective cap or may be plugged into a
protective cap mounted on the side wall. Use round head of
Code Reader on vehicles with this type of connector.
Square Connector (T3): Used on newer
model cars and vans. Black or grey in color
located under the hood near either:
• Front corner (right or left)
• Fender well (right or left)
• Fire wall (right or left)
It has a cover labeled “DIAGNOSTIC”, “DIAGNOSIS”, or
“CHECK CONN”. Use square head of Code Reader on vehicles
with this type of connector.
NOTE: Some Toyota/Lexus models do not require a tool to
retrieve codes. The “Tool Req?” column in the “Code Retrieval
Procedures Tables” on pages 38 through 41 will let you know if
a tool is required. If no tool is required, just follow the
procedures as indicated to retrieve codes.
“Check Engine” Light
• Transmits the fault codes in the computer’s memory to
you.
T1
T3
T2