CHECKING AND CLEARING DIAGNOSTIC CODES
®
CHECKING AND CLEARING DIAGNOSTIC CODE
S
OBJECTIVE
:
To learn how to check and clear diagnostic codes
.
PREPARATION
:
SST 09843-18020 Diagnosis check wire
APPLICABLE
ENGINE
:
4A-FE (
Sep
., 1989
)
/---
n~r~nu
M ~
~ --
This section basically covers the 4A-FE engine
. However, since the TDCL and test mode function in
the diagnosis system are not provided in the 4A-FE engine, the procedures and illustrations related to
these items are explained using the 1 UZ-FE (Dec
., 1989) engine
.
C~3
CHEC
K
ENGIN
E
CHECK
Check connecto
r
SST
or TE1
El
0
TDC
L
1
L
SST
El
TE1
"CHECK
ENGINE"
LAMP CHEC
K
(a) The "CHECK ENGINE" lamp should come on when
the ignition switch is turned on (engine not
running)
.
(b) When the engine is started, the "CHECK ENGINE"
lamp should go off
. If the light remains on, it
indicates that the diagnostic system has detected
a malfunction or abnormality in the diagnostic
system
.
OUTPUT OF DIAGNOSTIC CODE
S
1
. NORMAL MOD
E
To output
the diagnostic codes, proceed as follows
:
(a) Initial conditions
:
• Battery voltage
at 11 V
or higher
• Transmission in "N" rang
e
•
Ail
accessories switched off
(b) Turn
the ignition switch on
.
(c) Using the SST, connect terminal T or TE1 with
terminal
El
of the check connector or the TDCL
.
SST 09843-18020
159
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