Toyota Celica 2005 Repair Manual page 1085

DI−884
8 7 6 5 4
16 15 14 13 12
Terminal No.
7
4
16
2005 CELICA (RM1131U)
DIAGNOSTICS
3 2 1
11 10 9
A04550
Connection/Voltage or Resistance
Bus + Line/Pulse generation
Chassis Ground ⇔Body Ground/1 Ω or less
Battery Positive ⇔ Body Ground/9 − 14 V
H11997
− SUPPLEMENTAL RESTRAINT SYSTEM
PRE−CHECK
1. DIAGNOSIS SYSTEM
(a) Check the DLC3.
HINT:
The vehicle's ECM uses ISO 9141−2 for communication. The
terminal arrangement of the DLC3 complies wire SAE J1962
and matches the ISO 9141−2 format.
HINT:
If your display shows UNABLE TO CONNECT TO VEHICLE
when you have connected the cable of the OBD ll scan tool or
hand−held tester to the DLC3, turned the ignition switch ON
and operated the scan tool, there is a problem on the vehicle
side or tool side.
If communication is normal when the tool is connected to
S
another vehicle, inspect the DLC3 on the original vehicle.
If communication is still not possible when the tool is con-
S
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
2. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to ON, and check that the SRS
warning light comes on.
(b) Check that the SRS warning light goes out after approx.
6 seconds.
HINT:
When the ignition switch is at ON and the SRS warning
S
light remains on or flashes, the airbag sensor assembly
has detected a malfunction code.
If, after approx. 6 seconds have elapsed, the SRS warn-
S
ing light sometimes comes on even when the ignition
switch is OFF. In this case, a short in the SRS warning light
circuit is possible. Proceed to "SRS warning light circuit
malfunction" on page DI−1028.
1084
Condition
During Transmission
Always
Always
DIAIP−03