34 Door Side Airbag Sensor - CapHector

CIRCUIT DESCRIPTION. The door side airbag sensor (RH) circuit consists of the airbag sensor assembly and door side airbag sensor. (RH). For details of the ...
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DI-358 DIAGNOSTICS

-

SUPPLEMENTAL RESTRAINT SYSTEM DI6PU-04

DTC

B1142/B1143/34

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

CIRCUIT DESCRIPTION The door side airbag sensor (RH) circuit consists of the airbag sensor assembly and door side airbag sensor (RH). For details of the function of each component, see OPERATION on page RS-2 . DTC B1142/B1143/34 is recorded when a malfunction is detected in the door side airbag sensor (RH) circuit. DTC No.

B1142/B1143/34

DTC Detecting Condition

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

 Door side airbag sensor (RH) malfunction

WIRING DIAGRAM

D20 Door Side Airbag Sensor (RH)

DMR+

DMR-

2

Airbag Sensor Assembly

W-G (*1)

B-L 1

(*1)

2 IH1

1 IH1

W-G (*1)

B-L (*1)

3 C5 DMR+

4 C5 DMR-

*1 : 2 - Door w/ Side Airbag

H02750

2002 ECHO (RM884U)

Author:

Date:

528

DI-359 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 (RH) Airbag Sensor Assembly Airbag Sensor Assembly

ON

DMR(-) H03355 AB0119 H17655

V

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

DMR+

(+) H17660

NG

Go to step 8.

OK

3

Check wire harness (to ground).

Door Side Airbag Sensor (RH) Airbag Sensor Assembly Airbag Sensor Assembly

DMR(-) H03355 H17653

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

DMR+

(+)

NG

Go to step 9.

H17661

OK 2002 ECHO (RM884U)

Author:

Date:

529

DI-360 DIAGNOSTICS

4

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check wire harness. CHECK: For the connector (on the airbag sensor assembly side) between the door side airbag sensor (RH) and the airbag sensor assembly, measure the resistance between DMR+ and DMR-. OK: Resistance: 1 MΩ or Higher

Door Side Airbag Sensor (RH) Airbag Sensor Assembly Airbag Sensor Assembly

DMR-

DMR+ (+) (-)

H03355 H17654

H17662

NG

Go to step 10.

OK

5

Check wire harness.

Door Side Airbag Sensor (RH)

Airbag Sensor Assembly DMR+ Airbag Sensor Assembly

DMR-

DMR+ (+) DMRH03353 H03360

H17654

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

(-)

H17663

NG

Go to step 11.

OK

2002 ECHO (RM884U)

Author:

Date:

530

DI-361 DIAGNOSTICS

6

SUPPLEMENTAL RESTRAINT SYSTEM

Check door side airbag sensor (RH).

Door Side Airbag Sensor (RH) Airbag Sensor Assembly

DMR+

H04504 H01062

-

(+)

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

DMR-

(-) H08346

NG

Replace door side airbag sensor (RH).

OK

2002 ECHO (RM884U)

Author:

Date:

531

DI-362 DIAGNOSTICS

7

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check airbag sensor assembly.

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

→←

ON

DLC3

CG

DTC B1142/B1143/34

Tc

H04502 AB0119 H10600 H08007

H12035

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 (RH) 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 34 is not output. HINT: Codes other than code 34 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:

532

DI-363 DIAGNOSTICS

8

-

SUPPLEMENTAL RESTRAINT SYSTEM

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

Door Side Airbag Sensor (RH) ←→

ON

Airbag Sensor Assembly

RH Front Door Wire Harness DMR+

(-)

DMR-

(+)

PREPARATION: Disconnect the RH 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 RH front door wire harness side) between the airbag sensor assembly and the RH front door wire harness, measure the voltage between body ground and each of DMR+ and DMR-. OK: Voltage: Below 1 V NG

H03354 AB0119 H03364

Repair or replace RH front door wire harness.

H08348

OK

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

9

Check RH front door wire harness (to ground).

Door Side Airbag Sensor (RH) Airbag Sensor Assembly

RH Front Door Wire Harness

(-)

DMR+

DMR-

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

(+)

NG H03354 H03362

Repair or replace RH front door wire harness.

H08349

OK

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

2002 ECHO (RM884U)

Author:

Date:

533

DI-364 DIAGNOSTICS

10

-

SUPPLEMENTAL RESTRAINT SYSTEM

Check RH front door wire harness.

Door Side Airbag Sensor (RH)

RH Front Door Wire Harness

←→

Airbag Sensor Assembly

DMR-

DMR+

(+) H03354 H09507

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

(-) H08351

NG

Repair or replace RH front door wire harness.

OK

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

2002 ECHO (RM884U)

Author:

Date:

534

DI-365 DIAGNOSTICS

11

-

SUPPLEMENTAL RESTRAINT SYSTEM

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

Door Side Airbag Sensor (RH)

Airbag Sensor Assembly

←→

DMR-

DMR+ DMR+

(+) H03352 H03360 H09507

DMR-

(-)

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

H08350

NG

Repair or replace RH front door wire harness.

OK

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

2002 ECHO (RM884U)

Author:

Date:

535