Toyota Celica 2005 Repair Manual page 1291

DI−1090
DLC3
1 2 3 4 5 6 7 8
9
10 11 12 1314 1516
DLC3
Terminal No.
4 Chassis Ground ↔ Body Ground / 1 Ω or less
7
16
2005 CELICA (RM1131U)
DIAGNOSTICS
Hand−held tester
A08841
A04550
Connection/Specified Condition
Bus ⊕ Line / Pulse Generation
Battery Positive ↔ Body Ground / 9 − 14 V
− CRUISE CONTROL SYSTEM (2ZZ−GE)
PRE−CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of the cruise control on a ve-
hicle.
Data on the cruise control and on DTC can be read from
the DLC3 on the vehicle. If CRUISE MAIN indicator does
not come on after the DTC check, there is a malfunction
on the cruise control.
Use the hand−held tester or SST to check and solve the
problem.
(b) Check the DLC3.
The vehicle's ECM uses ISO 9141−2 for communication.
The terminal arrangement of DLC3 complies with SAE
J1962 and matches the ISO 9141−2 format.
HINT:
If the display shows "UNABLE TO CONNECT TO VEHICLE" as
connecting the hand−held tester to the DLC3 and turning the
ignition ON, there is a problem either on the vehicle or on the
tool.
If communication is normal when connecting the tool to
S
another vehicle, inspect DLC3 on the original vehicle.
If communication is still not possible when connecting the
S
tool to another vehicle, the problem is probably in the tool
itself. Consult the Service Department listed in the tool's
instruction manual in that case.
1290
Condition
Always
During Communication
Always
DIAJL−04