Toyota AVENSIS 2000 Supplement Manual page 388

DLC3
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
DLC3
Tester connection
7 (Bus + Line) – 5 (Signal Ground)
4 (Chassis Ground) – Body Ground
5 (Signal Ground) – Body Ground
16 (B+) – Body Ground
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
PRE–CHECK
Hand–held Tester
1.
(a)
D01600
(b)
A04550
During communication
HINT:
If your display shows "UNABLE TO CONNECT TO VEHICLE"
when you have connected the cable of the hand–held tester to
the DLC3, turned the ignition switch ON and operated the
hand–held tester, there is a problem on the vehicle side or tool
side.
– ENGINE IMMOBILISER SYSTEM
DIAGNOSIS SYSTEM
Description
Engine ECU controls the function of immobiliser on this
vehicle.
Data of the immobiliser or Diagnostic Trouble Code (DTC)
can be read from the Data Link Connector 3 (DLC3) of the
vehicle. When a trouble occurs in immobiliser, Malfunc-
tion Indicator Lamp (MIL) does not light ON but DTC in-
spection is performed.
Therefore when there seems to be a trouble with immobi-
liser, use hand–held tester or SST (diagnosis check wire
No. 2) to check and troubleshoot it.
Inspect the DLC3.
The vehicle's engine ECU uses ISO 14230 for commu-
nication.
The terminal arrangement of the DLC3 complies with
SAE J1962 and matches the ISO 14230 format.
Condition
Always
Always
Always
S
If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.
S
If communication is still impossible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
DI–257
DI7W6–02
Specified condition
Pulse generation
1 Ω or less
1 Ω or less
9 – 14 V