Diagnostic Terminal(S) - Toyota COMPUTER-CONTROLLED SYSTEM Training Manual

ELECTRONIC CONTROL SYSTEM - Diagnostic Terminal (S )
DIAGNOSTIC TERMINAL(S )
The T or TE1 terminal is located in the check
connector in the engine compartment and the
TE1 and TE2 terminals are located in the TDCL
(Toyota diagnostic communication link) in the
passenger compartment ( located under the
instrument panel) .
I Check connecto r
,
OHP 41
NOTE
OBD-II compatible engines of vehicles sold in
the U .S .A . and Canada are equipped with a
DLC3 in addition to the check connector
(DLC1 ; Data Link Connector 1) and TDCL
(DLC2) . Consequently, it does not have a TE2
terminal of DLC1 or TE2 or TE1 terminal of
DLC2 . In addition, in case of reading diagnostic
codes, the tester for exclusive use* must be
connected to DLC3 .
For further details, see page 137-2 .
OBD-II scan tool or TOYOTA hand-hel d
teste r
TDCL
OHP 4 1
When these terminals are connected with the E1
terminal, diagnostic codes for either the normal
mode or the test mode can be read from the
blinking of the "CHECK ENGINE" lamp in the
combination meter. For fu rt her details, see page
159 .
ELECTRICAL CIRCUITRY
Check connecto r
El
Engine EC U
OHP 4 1
REFERENCE
1 . The TDCL is provided in some vehicl e
models equipped with the TCCS type
engine control system .
2 . In some vehicle models, the TE2 terminal
is located in the check connector .
DLC 3
ELECTRICAL CIRCUITR Y
48