DI-338
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI7IA-01
DTC B1135/24 Half Connection in Airbag Sensor Assembly
Connector
CIRCUIT DESCRIPTION
The airbag sensor assembly detects partial connection of connector.
For details of the function of each component, see OPERATION on page RS-2 .
DTC B1135/24 is recorded when the airbag sensor assembly detects an open in the electrical connection
check mechanism of the airbag sensor connector or in the airbag sensor circuit.
DTC No. DTC Detecting Condition Trouble Area
Malfunction of electrical connection check mechanism of
Electrical connection check mechanism
B1135/24 airbag sensor assembly connector
Airbag sensor assembly
Airbag sensor assembly malfunction
2002 ECHO (RM884U)
Author: Date: 508
DI-339
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
1 Are connector of center airbag sensor assembly properly connected?
NG Connect connectors.
OK
2 Prepare for inspection (See step 1 on page DI-390 ).
3 Check airbag sensor assembly.
PREPARATION:
ON (a) Connect the connectors to the airbag sensor assembly.
(b) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
Airbag CHECK:
Sensor (a) Turn the ignition switch to LOCK, and wait at least for 20
Assembly
seconds.
(b) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(c) Clear the DTC stored in memory (See page DI-239 ).
(d) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
DTC B1135/24 (e) Turn the ignition switch to ON, and wait at least for 20 se-
DLC3 conds.
(f) Check the DTC (See page DI-239 ).
OK:
DTC B1135/24 is not output.
CG Tc HINT:
H15222 Codes other than code B1135/24 may be output at this time, but
they are not relevant to this check.
NG Go to the next step.
OK
From the results of the inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
2002 ECHO (RM884U)
Author: Date: 509
DI-340
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 Check disconnection detection pin in the center airbag sensor assembly
connector.
CHECK:
With 3 connectors connected to the sensor assembly, place
tester leads onto any 2 of 3 disconnection detection pins and
check for continuity.
OK:
Continuity
H14983
NG Go to the next step.
OK
From the results of the inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
2002 ECHO (RM884U)
Author: Date: 510
DI-341
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
5 Perform a visual check of the disconnection detection pin.
OK:
No deformation is identified.
HINT:
Compare it with the other 2 connector pins.
H15243
NG Repair or replace airbag sensor assembly
connector.
OK
Replace airbag sensor assembly.
2002 ECHO (RM884U)
Author: Date: 511
