Toyota COMPUTER-CONTROLLED SYSTEM Training Manual page 143

DIAGNOSIS
- "CHECK
ENGINE" Lamp and VF or VF1 Terminal Outpu t
DIAGNOSTIC MODE AND "CHECK ENGINE"
LAM P
The diagnostic mode (normal or test) and the See CHECKING AND CLEARING DIAGNOSTIC
output of the "CHECK ENGINE" lamp can be CODES (page 159) for the normal mode and test
selected by changing the connections of the T or mode setting procedure and the code output
TE1, TE2 and El terminals on the check methods .
connector or TDCL, as shown in the table below .
T OR TE1 AND
El
TE2 AND
El
DIAGNOSTIC
"CHECK ENGINE" LAM P
TERMINALS TERMINALS
MOD E
Open
Normal Warns driver of malfunctio n
Open
Connected
Test
Notifies
technician of malfunctio n
Open
Normal
Outputs diagnostic results (nature of malfunction), b y
number of times lamp blinks .
Connected
Connected Test
Outputs diagnostic results (nature of
malfunction),
b y
number of times lamp blinks .
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