sensor TOYOTA AVENSIS 1999 Supplement

H11822
Airbag Sensor
AssemblySide Airbag Assembly (RH)
(Squib)
Pretensioner (RH)
(Squib)
Side and Curtain Shied
Airbag Sensor (RH)1
2
3
4
5
6
7
89
10
11
12
1314
15Front Airbag Sensor
(RH)
Front Passenger Airbag
Assembly (Squib)
Spiral Cable
Steering Wheel
Pad (Squib)
No.1 J/B
Pretensioner (LH)
(Squib) Front Airbag Sensor
(LH)
Side Airbag Assembly (LH)
(Squib)
16
19
18
17
2021Curtain Shied Airbag
Assembly (RH) (Squib)
Curtain Shied Airbag
Assembly (LH) (Squib)
Side and Curtain Shied
Airbag Sensor (LH) DI–2
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM


 


  


H01358
Airbag Sensor Assembly Connector
Short SpringShort SpringShort Spring
Before ReleaseAfter Release
Connector
Connector
Short SpringShort Spring
Before Release
Paper
After Release
Paper
5821
Connector
Paper
12
3
1019
Short Spring
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–3

DI694–01
DI–4
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below (Proceed to the page given for that circuit.).
DTC No.
(See Page)Detection ItemTrouble AreaSRS
Warning Light
81
(DI–8)Short in curtain shield airbag (RH) cir-
cuit (to ground)
Curtain shield airbag (RH) (squib)

Airbag sensor assembly

Wire harness
Blink
82
(DI–12)Short in curtain shield airbag (RH) cir-
cuit circuit (to B+)
Curtain shield airbag (RH) (squib)

Airbag sensor assembly

Wire harness
Blink
83
(DI–15)Short in curtain shield airbag (RH) squib
circuit
Curtain shield airbag (RH) (squib)

Airbag sensor assembly

Wire harness
Blink
84
(DI–18)Open in curtain shield airbag (RH) squib
circuit
Curtain shield airbag (RH) (squib)

Airbag sensor assembly

Wire harness
Blink
85
(DI–21)Short in curtain shield airbag (LH) circuit
(to ground)
Curtain shield airbag (LH) (squib)

Airbag sensor assembly

Wire harness
Blink
86
(DI–25)Short in curtain shield airbag (LH) circuit
circuit (to B+)
Curtain shield airbag (LH) (squib)

Airbag sensor assembly

Wire harness
Blink
87
(DI–28)Short in curtain shield airbag (LH) squib
circuit
Curtain shield airbag (LH) (squib)

Airbag sensor assembly

Wire harness
Blink
88
(DI–31)Open in curtain shield airbag (LH) squib
circuit
Curtain shield airbag (LH) (squib)

Airbag sensor assembly

Wire harness
Blink
HINT:

When the SRS warning light remains lit up and the DTC is the normal code, this means a voltage source
drops.
This malfunction is not stored in memory by the airbag sensor assembly and if the power source volt-
age returns to normal, the SRS warning light will automatically go out.

When 2 or more codes are indicated, the codes will be displayed in numeral order starting from the
lowest numbered code.

If a code not listed on the chart is displayed, the airbag sensor assembly is faulty.

DI695–01
H11591
Combination Meter
(Warning Light)Steering Wheel Pad
(with Airbag)
Airbag Sensor Assembly Front Passenger
Airbag Assembly
Side Airbag Assembly
(LH)
Seat Belt
Pretensioner (LH)Side Airbag Assembly (RH)
Seat Belt
Pretensioner (RH)
Front Airbag
Sensor (LH)
Front Airbag Sensor (RH)
Side and Curtain Shield
Airbag Sensor (RH) Side and Curtain Shield
Airbag Sensor (LH)Curtain Shield Airbag
Assembly (LH)Curtain Shield Airbag Assembly (RH)
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–5
PARTS LOCATION

DI696–01
H01357
C6C5C4
A B
1 2 3 4 5 6A BA B
7 8 9 10 11 121 2 3 4 5 6
7 8 9 10 11 12 1 2 3 4 5 6
7 8 9 10 11 12
23 24 25 26 27 2813 14 15 16 17
18 19 20 21 22 DI–6
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
TERMINALS OF ECU
No.SymbolTerminal Name
A–Electrical Connector Check Mechanism
B–Electrical Connector Check Mechanism
C4 – 1SFL–Squib (Side, LH)
C4 – 2SFL+Squib (Side, LH)
C4 – 5PL+Squib (Seat Belt Pretensioner, LH)
C4 – 6PL–Squib (Seat Belt Pretensioner, LH)
C4 – 7ESLSide Airbag Sensor (LH)
C4 – 9FSLSide Airbag Sensor (LH)
C4 – 10SSL+Side Airbag Sensor (LH)
C4 – 12VUPLSide Airbag Sensor (LH)
C5 – 3LASRS Warning Light
C5 – 5IG2Power Source (IGN Fuse)
C5 – 6ACCPower Source (CIG Fuse)
C5 – 7ICL+Squib (Curtain Shield Airbag, LH)
C5 – 8ICL–Squib (Curtain Shield Airbag, LH)
C5 – 9SR+Front Airbag Sensor (RH)
C5 – 10P+Squib (Passenger)
C5 – 11P–Squib (Passenger)
C5 – 12SILDiagnosis
C5 – 13D–Squib (Driver)
C5 – 14D+Squib (Driver)
C5 – 15SL+Front Airbag Sensor (LH)
C5 – 16ICR–Squib (Curtain Shield Airbag, RH)
C5 – 17ICR+Squib (Curtain Shield Airbag, RH)
C5 – 19TcDiagnosis

– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–7
No.SymbolTerminal Name
C5 – 20SR–Front Airbag Sensor (RH)
C5 – 26SL–Front Airbag Sensor (LH)
C5 – 27E1Ground
C5 – 28E2Ground
C6 – 1PR–Squib (Seat Belt Pretensioner, RH)
C6 – 2PR+Squib (Seat Belt Pretensioner, RH)
C6 – 5SFR+Squib (Side, RH)
C6 – 6SFR–Squib (Side, RH)
C6 – 7VUPRSide Airbag Sensor (RH)
C6 – 9SSR+Side Airbag Sensor (RH)
C6 – 10FSRSide Airbag Sensor (RH)
C6 – 12ESRSide Airbag Sensor (RH)

DI697–01
H01454
Curtain Shield Airbag
Squib (RH)Airbag Sensor Assembly
1Y–O16
C5
ICR+ 2
Y–V17
C5ICR– DI–8
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
CIRCUIT INSPECTION
DTC 81 Short in Curtain Shield Airbag Squib (RH)
Circuit (to Ground)
CIRCUIT DESCRIPTION
The curtain shield airbag squib (RH) circuit consists of the airbag sensor assembly and curtain shield airbag
(RH).
It causes the curtain shield airbag (RH) to activate when the curtain shield airbag assembly (RH) activation
conditions are satisfied.
DTC No.DTC Detecting ConditionTrouble Area
81

Short circuit in curtain shield airbag squib (RH) wire har-
ness (to ground)

Curtain shield airbag squib (RH) malfunction

Airbag sensor assembly malfunction
Curtain shield airbag (RH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM


H11656
Curtain
Shield
Airbag
Squib (RH)Airbag
Sensor
Assembly
(+)
(–)
ICR+
ICR–
Airbag Sensor
Assembly
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–9
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI–285 of Pub. No. RM599E)
2 Check curtain shield airbag squib (RH) circuit.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the curtain shield airbag assembly (RH) and airbag sen-
sor assembly, measure the resistance between ICR+, ICR–
and body ground.
OK:
Resistance: 1 MΩ or Higher
NG Repair or replace harness or connector be-
tween curtain shield airbag assembly (RH) and
airbag sensor assembly.
OK

  




H11657
ICR+ICR–ACC
or
DTC 81
ON → ←
E1Tc Check Connector
Curtain
Shield
Airbag
Squib (RH)Airbag
Sensor
Assembly
DI–10
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect ICR+ and ICR– of the con-
nector (on the curtain shield airbag assembly side) be-
tween the curtain shield airbag assembly (RH) and the
airbag sensor assembly.
(c) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See step 5 on page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 81 is not output.
HINT:
Codes other than code 81 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK

  


H11658
→←
E1 TcACC ON
or
DTC 81 Check Connector
Curtain
Shield
Airbag
Squib (RH)Airbag
Sensor
Assembly
– DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI–11
4 Check curtain shield airbag squib (RH).
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the curtain shield airbag assembly (RH) connec-
tor.
(d) Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See step 5 on page DI–153 of Pub. No. RM599E)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI–152 of Pub. No. RM599E)
OK:
DTC 81 is not output.
HINT:
Codes other than code 81 may be output at this time, but they
are not relevant to this check.
NG Replace curtain shield airbag assembly (RH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.