Toyota Camry Manual page 1466

Tester connection
7 (Bus X Line) – 5 (Signal ground)
4 (Chassis Ground) – Body
5 (Signal Ground) – Body
16 (B+) – Body
DIAGNOSTICS –
D
D
(b) Inspect 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.
N09214
Condition
During communication
Always
Always
Always
HINT:
If your display shows "UNABLE TO CONNECT TO VEHICLE"
when you have connected the cable of OBD II scan tool or TOY-
OTA hand–held tester to DLC3, turned the ignition switch ON
and operated the scan tool, there is a problem on the vehicle
side or tool side.
(1)
(2)
AUTOMATIC TRANSAXLE (A541E)
The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
mode for technicians to simulate malfunction symp-
toms and perform troubleshooting. Most DTCs use
2 trip detection logic(*) to prevent erroneous detec-
tion. By switching the ECM to check mode when
troubleshooting, the technician can cause the MIL
to light up and for a malfunction that is only detected
once or momentarily.
(TOYOTA hand–held tester) (See page DI–438)
*2 trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the
2nd test drive, this 2nd detection causes the MIL to
light up.
If communication is normal when the tool is con-
nected to another vehicle, inspect DLC3 on the orig-
inal vehicle.
If communication is still not possible when the tool
is connected connected to another vehicle, the
problem is probably in the tool itself, so consult the
Service Department listed in the tool's instruction
manual.
Author :
DI–439
Specified condition
Pulse generation
1 Ω or less
1 Ω or less
9 – 14 V
Date :
674