1999 TOYOTA AVENSIS diagram


H11826
Airbag
Sensor
Assembly Curtain
Shield
Airbag
Squib (LH)
ICL+
(–)(+)Airbag Sensor
Assembly
ICL–
DI–28
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DTC 87 Short in Curtain Shield Airbag Squib (LH)
Circuit
CIRCUIT DESCRIPTION
The curtain shield airbag squib (LH) circuit consists of the airbag sensor assembly and curtain shield airbag
assembly (LH).
It causes the curtain shield airbag assembly (LH) to activate when the curtain shield airbag assembly (LH)
activation conditions are satisfied.
For details of the function of each component, see OPERATION on page RS–2.
DTC 87 is recorded when a short is detected in the curtain shield airbag squib (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
87

Short circuit between ICL+ wire harness and ICL– wire
harness of squib

Curtain shield airbag squib (LH) malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly (LH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI–21.
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI–285 of Pub. No. RM599E)
2 Check curtain shield airbag squib (LH) circuit.
PREPARATION:
Release airbag activation prevention mechanism of the con-
nector (on the airbag sensor assembly side) between the airbag
sensor assembly and curtain shield airbag assembly (LH).
(See page DI–1)
CHECK:
For the connector (on the curtain shield airbag assembly side)
between the curtain shield airbag assembly (LH) and airbag
sensor assembly, measure the resistance between ICL+ and
ICL–.
OK:
Resistance: 1 MΩ or Higher
NG Repair or replace harness or connector be-
tween curtain shield airbag assembly (LH) and
airbag sensor assembly.
DI69D–01


H11826
Airbag
Sensor
Assembly Curtain
Shield
Airbag
Squib (LH)
ICL+
(–)(+)Airbag Sensor
Assembly
ICL–
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–31
DTC 88 Open in Curtain Shield Airbag Squib (LH)
Circuit
CIRCUIT DESCRIPTION
The curtain shield airbag squib circuit (LH) consists of the airbag sensor assembly and curtain shield airbag
assembly (LH).
It causes the curtain shield airbag assembly (LH) to activate when the curtain shield airbag assembly (LH)
activation conditions are satisfied.
For details of the function of each component, see OPERATION on page RS–2.
DTC 88 is recorded when an open is detected in the curtain shield airbag squib (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
88

Open circuit in ICL+ wire harness or ICL– wire harness of
squib

Curtain shield airbag squib (LH) malfunction

Airbag sensor assembly malfunction
Curtain shield airbag assembly (LH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI–21.
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI–285 of Pub. No. RM599E)
2 Check curtain shield airbag squib (LH) circuit.
CHECK:
For the connector (on the curtain shield airbag assembly side)
between the curtain shield airbag assembly (LH) and the airbag
sensor assembly, measure the resistance between ICL+ and
ICL–.
OK:
Resistance: Below 1 Ω
NG Repair or replace harness or connector be-
tween curtain shield airbag assembly (LH) and
airbag sensor assembly.
DI69E–01

Z05953
Spacer
Housing
Female Male
R10587
When Connector is Connected When Connector is Disconnected
Short Spring Plate
Housing
Housing
Terminal
ConnectorsShort Spring PlateSquib
Squib Short Spring Plate ONContacting Male Terminal Short Spring Plate
Closed Circuit
R12076Airbag Sensor AssemblyDisconnection
Detection
PinSRS
Warning
Light RS–4
– SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
(1) Terminal Twin–Lock Mechanism
Each connector has a two–piece component con-
sisting of a housing and a spacer. This design en-
ables the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) Airbag Activation Prevention Mechanism
Each connector contains a short spring plate. When
the connector is disconnected, the short spring
plate automatically connects positive (+) terminal
and negative (–) terminal of the squib.
HINT:
The type of connector is shown in the diagram on the previous
page.
(3) Electrical Connection Check Mechanism
This mechanism electrically checks that connectors
are connected correctly and completely. The electri-
cal connection check mechanism is designed so
that the disconnection detection pin connects with
the diagnosis terminals when the connector hous-
ing lock is locked.






I12758
Buner Motor
Glow Plug
Overheating Sensor
Temp. Sensor
Flame SensorBR
B
BR
W
R
L R
L
BR
L
Connector B14
7 135
6 3 9
8 1
Power
Heater
ECUR
BR
B–R
G
G–W
L
Y
B–WConnector A 8
2
51
3
6
47R
BR
GTerminal L
of AlternatorBattery
Metering Pump
SWIG
Vehicle Side
14 13 10 9 825 13 647
11 1 2
12Fuse (20 A) B–R
G–W AC–10
– AIR CONDITIONINGCOMBUSTION TYPE POWER HEATER
2. DESCRIPTION OF DISPLAY AND BUTTONS
AF: Current Value Malfunction (Blinking at current failure)
Diag: DTC (Example: 064 Flame sensor break)
Mamory Clear button: Deletion of faulty memory (Press both buttons together for longer than 2 sec.)
> Button: Scroll up of faulty memory (The past 5 codes can be stored.)
< Button: Scroll down of faulty memory (The past 5 codes can be stored.)
3. FAULTY MEMORY
The ECU is able to store up to 5 pieces of faulty memory. If it is full, the new data is written over F5.
4. WIRING DIAGRAM
Wire colors are indicated by an alphabetical code.
B=Black W=White BR=Brown L=Blue R=Red G=Green Y=Yellow
The first letter insicates the basic wire color and the seconk letter indicates the color of the stripe.