Instruction manual

12
EFI System
(Electronic Fuel Injection system)
1) Complete ALL steps in Section 4,
“Vehicle Preparation”
2) Access Computer Test Connector
Rectangular type:
• Open hinged cover on connector.
• Some connectors use a special
grease on the contacts to prevent
corrosion. Do not wipe off!
Circular type:
• Remove the protective rubber cap
from the connector.
3) Turn ignition
Key to ON
Position but
DO NOT
START THE
ENGINE
4) Install Code Scanning Tool
Rectangular test connector:
• Plug code scanner tool into connector.
Note: Tool does not completely cover
all contacts in 24 pin type connector.
This is normal.
• The tool only fits ONE WAY into the
test connector
• The tool will not harm the vehicle
engine computer.
O
F
F
O
N
Remove cap if present
T
M
T
O
Y
O
T
A
CP9025
Circular test connector:
• Plug the black jumper wire into both
test connector contacts.
• The jumper wire will not harm the
vehicle engine computer.
5) Get Codes from the Flashing
“CHECK” Engine Light
• Count flashes to get trouble codes.
• Only single digit codes (1 through 8)
are used.
–There is a 1 second pause between
flashes.
Example: code 3 looks like...
❊
PAUSE
❊
PAUSE
❊
FLASH (1 sec. pause) FLASH (1 sec.
pause) FLASH
• There is a 3 second pause between
codes.
• After all codes are sent, the whole
sequence is repeated. This continues
until the ignition key is turned OFF or
the code scanning tool is discon-
nected.
Note: This means a code 1 (system
O.K.) will appear as a single flash
occurring every 3 seconds.
• Codes are sent in numeric order from
the lowest number to the highest.
Example of code 3 only:
❊
PAUSE
❊
PAUSE
❊
FLASH - FLASH - FLASH
(3 second pause, then start over again)
Example of code series 3 and 5:
❊
PAUSE
❊
PAUSE
❊
FLASH - FLASH - FLASH
(3 second pause)
❊
PAUSE
❊
PAUSE
❊
PAUSE
❊
PAUSE
❊
FLASH - FLASH - FLASH - FLASH - FLASH
(3 second pause, then start all over from
the very beginning)
TOYOTA