35 Door Side Airbag Sensor - CapHector

CIRCUIT DESCRIPTION. The door side airbag sensor (LH) circuit consists of the airbag sensor assembly and door side airbag sensor. (LH). For details of the ...
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DI-366 DIAGNOSTICS

-

SUPPLEMENTAL RESTRAINT SYSTEM DI6PV-04

DTC

B1144/B1145/35

Door Side Airbag Sensor (LH) Malfunction (2-Door only)

CIRCUIT DESCRIPTION The door side airbag sensor (LH) circuit consists of the airbag sensor assembly and door side airbag sensor (LH). For details of the function of each component, see OPERATION on page RS-2 . DTC B1144/B1145/35 is recorded when malfunction is detected in the door side airbag sensor (LH) circuit. DTC No.

B1144/B1145/35

DTC Detecting Condition

Trouble Area  Door side airbag sensor (LH)  Airbag sensor assembly  Instrument panel wire harness  LH front door wire harness

 Door side airbag sensor (LH) malfunction

WIRING DIAGRAM

D19 Door Side Airbag Sensor (LH)

DML+

DML-

2

Airbag Sensor Assembly

W-G (*1)

B-L 1

(*1)

2 IG1

1 IG1

W-G (*1)

B-L (*1)

4 C3 DML+

3 C3 DML-

*1 : 2 - Door w/ Side Airbag

H02750

2002 ECHO (RM884U)

Author:

Date:

536

DI-367 DIAGNOSTICS

-

SUPPLEMENTAL RESTRAINT SYSTEM

INSPECTION PROCEDURE 1

Prepare for inspection (See step 1 on page DI-390 ).

2

Check wire harness (to B+).

Door Side Airbag Sensor (LH) Airbag Sensor Assembly Airbag Sensor Assembly

ON

DML+ (-)

CHECK: (a) Turn the ignition switch to ON. (b) For the connector (on the airbag sensor assembly side) between the door side airbag sensor (LH) and the airbag sensor assembly, measure the voltage between body ground and each of DML+ and DML-. OK: Voltage: Below 1 V

DML-

(+)

H03355 AB0119 H17658

H17664

NG

Go to step 8.

OK

3

Check wire harness (to ground).

Door Side Airbag Sensor (LH) Airbag Sensor Assembly Airbag Sensor Assembly

DML+

DML(+)

H03355 H17656

CHECK: For the connector (on the airbag sensor assembly side) between the door side airbag sensor (LH) and the airbag sensor assembly, measure the resistance between body ground and each of DML+ and DML-. OK: Resistance: 1 MΩ or Higher

(-)

NG

Go to step 9.

H17665

OK 2002 ECHO (RM884U)

Author:

Date:

537

DI-368 DIAGNOSTICS

4

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check wire harness.

Door Side Airbag Sensor (LH) Airbag Sensor Assembly Airbag Sensor Assembly

DML+

DML-

H03355 H17657

CHECK: For the connector (on the airbag sensor assembly side) between the door side airbag sensor (LH) and the airbag sensor assembly, measure the resistance between DML+ and DML-. OK: Resistance: 1 MΩ or Higher

(-)

(+)

H17666

NG

Go to step 10.

OK

5

Check wire harness.

Door Side Airbag Sensor (LH)

Airbag Sensor Assembly

DML-

DML+

DML+

H03353 H03360

Airbag Sensor Assembly

DML-

PREPARATION: Using a service wire, connect DML+ and DML- of the connector (on the door side airbag sensor (LH) side) between the airbag sensor assembly and the door side airbag sensor (LH). CHECK: For the connector (on the airbag sensor assembly side) between the door side airbag sensor (LH) and the airbag sensor assembly, measure the resistance between DML+ and DML-. OK: Resistance: Below 1 Ω

(-) (+)

H17657

H17667

NG

Go to step 11.

OK

2002 ECHO (RM884U)

Author:

Date:

538

DI-369 DIAGNOSTICS

6

SUPPLEMENTAL RESTRAINT SYSTEM

Check door side airbag sensor (LH).

Door Side Airbag Sensor (LH) Airbag Sensor Assembly

DML+

H04504 H01062

-

(+)

CHECK: For the connector of the door side airbag sensor (LH), measure the resistance between DML+ and DML-. OK: Resistance: 300 - 1500 Ω

DML-

(-) H08346

NG

Replace door side airbag sensor (LH).

OK

2002 ECHO (RM884U)

Author:

Date:

539

DI-370 DIAGNOSTICS

7

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check airbag sensor assembly.

Door Side Airbag Sensor (LH) Airbag Sensor Assembly →←

→←

ON

DLC3

CG

DTC B1144/B1145/35

Tc

H04502 AB0119 H10600 H08036

H12036

PREPARATION: (a) Turn the ignition switch to LOCK. (b) Disconnect negative (-) terminal cable from the battery, and wait at least for 90 seconds. (c) Connect the door side airbag sensor (LH) connector and airbag sensor assembly connector. (d) Connect negative (-) terminal cable to the battery, and wait at least for 2 seconds. CHECK: (a) Turn the ignition switch to ON, and wait at least for 20 seconds. (b) Clear the DTC stored in memory (See page DI-239 ). (c) Turn the ignition switch to LOCK, and wait at least for 20 seconds. (d) Turn the ignition switch to ON, and wait at least for 20 seconds. (e) Check the DTC (See page DI-239 ). OK: DTC 35 is not output. HINT: Codes other than code 35 may be output at this time, but they are not relevant to this check. NG

Replace airbag sensor assembly.

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.

2002 ECHO (RM884U)

Author:

Date:

540

DI-371 DIAGNOSTICS

8

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check LH front door wire harness (to B+).

Door Side Airbag Sensor (LH) ←→

ON

Airbag Sensor Assembly

LH Front Door Wire Harness DML+

(-)

DML-

(+)

PREPARATION: Disconnect the LH front door wire harness connector on the airbag sensor assembly side. CHECK: (a) Turn the ignition switch to ON. (b) For the connector (on the LH front door wire harness side) between the airbag sensor assembly and the LH front door wire harness, measure the voltage between body ground and each of DML+ and DML-. OK: Voltage: Below 1 V NG

H03354 AB0119 H03364

Repair or replace LH front door wire harness.

H08348

OK

Repair or replace harness or connector between airbag sensor assembly and LH front door wire harness.

9

Check LH front door wire harness (to ground).

Door Side Airbag Sensor (LH) Airbag Sensor Assembly

LH Front Door Wire Harness

(-)

DML+

DML-

PREPARATION: Disconnect the LH front door wire harness connector on the airbag sensor assembly side. CHECK: For the connector (on the LH front door wire harness side) between the airbag sensor assembly and the LH front door wire harness, measure the resistance between body ground and each of DML+ and DML-. OK: Resistance: 1 MΩ or Higher

(+)

H03354 H03362

H08349

NG

Repair or replace LH front door wire harness.

OK

Repair or replace harness or connector between airbag sensor assembly and LH front door wire harness. 2002 ECHO (RM884U)

Author:

Date:

541

DI-372 DIAGNOSTICS

10

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check LH front door wire harness. LH Front Door Wire Harness

Door Side Airbag Sensor (LH)

←→

Airbag Sensor Assembly

DML-

DML+

(+) H03354 H09507

PREPARATION: Disconnect the LH front door wire harness connector on the airbag sensor assembly side. CHECK: For the connector (on the LH front door wire harness side) between the airbag sensor assembly and the LH front door wire harness, measure the resistance between DML+ and DML-. OK: Resistance: 1 MΩ or Higher

(-) H08351

NG

Repair or replace LH front door wire harness.

OK

Repair or replace harness or connector between airbag sensor assembly and LH front door wire harness.

2002 ECHO (RM884U)

Author:

Date:

542

DI-373 DIAGNOSTICS

11

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check LH front door wire harness. LH Front Door Wire Harness

Door Side Airbag Sensor (LH)

Airbag Sensor Assembly

←→

DML-

DML+ DML+

(+) H03352 H03360 H09507

DML-

(-)

PREPARATION: (a) Disconnect the LH front door wire harness connector on the airbag sensor assembly side. (b) Using a service wire, connect DML+ and DML- of the connector (on the LH front door wire harness side) between the LH front door wire harness and the door side airbag sensor (LH). CHECK: For the connector (on the LH front door wire harness side) between the airbag sensor assembly and the LH front door wire harness, measure the resistance between DML+ and DML-. OK: Resistance: Below 1 Ω

H08350

NG

Repair or replace LH front door wire harness.

OK

Repair or replace harness or connector between airbag sensor assembly and LH front door wire harness.

2002 ECHO (RM884U)

Author:

Date:

543