E

Jffll0

Uta a

Coda 13

JUU1ÍL

(1) Connect negative (-) terminal cable to battery.

(2) Clear malfunction code 41 stored in memory

(1) Turn ignition switch LOCK, and wait at least.

2 seconds.

(2) Turn ignition switch ACC or ON, and wait at least

20 seconds:

(3) Using SST, connect terminals Tc and E1 of check|

connector. SST 09843-18020

(4) Check diagnostic code. Diagnostic code 13 is not output.

Codes other than code 13 may be output at this time, but this is not relevant to this check.

Replace center airbag sensor assembly.

Check squib.

Center

Sensor Assembly

Spiral 5twr ins Wheal Cibfe Pad ISquibt

ACC ON

Codr 13

juuui uirn JUvm wii? pil.l HI MO

(1) Turn ignition switch LOCK.

(2) Disconnect battery negative (-) terminal cable, and wait at least 20 seconds.

(3) Connect steering wheel pad (squib) connector.

(4) Connect negative (-) terminal cable to battery.

(5) Clear malfunction code 41 stored in memory

(1) Turn ignition switch LOCK, and wait at least

2 seconds.

(2) Turn ignition switch ACC or ON, and wait at least 20 seconds.

(3) Using' SST, connect terminals Tc and E1 of check connector. SST 09843-18020

(4) Check diagnostic code. Diagnostic code 13 is not output.

Codes other than code 13 may be output at this time, but this is not relevant to this check.

Replace steering wheel pad.

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.

Check spiral cable.

Carnet Attbag Sojiwr AjscrttHy

Spiral Cabk jlrnnriL' Wheel

P.id iSnui b I

(1) Disconnect connector between center airbag sensor assembly and spiral cable.

(2) Release airbag activation prevention mechanism on center airbag sensor assembly side of spiral cab connector (See page AB-54).

Measure resistance between D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad.

Resistance:

Repair or replace spiral cable.

Check harness between center airbag sensor assembly and spiral cable.

Centnr Airhjg Sens(K Assamblv

Spiral C* bid

AHHtta

(1) Disconnect center airbag sensor assembly connector.

(2) Release airbag activation prevention mechanism on center airbag sensor assembly connector (See page AB-54).

q Measure resistance between D+ and D- on center airbag sensor assembly side of connector between center airbag sensor assembly and spiral cable.

m Resistance: oo

Repair or replace harness or connector between center airbag sensor assembly and spiral cable.

7 ¡

Check center airbag sensor assembly.

Canter Anrfcae Spiral Senior Assembly CahlK

5tHsring Wh«l Pad ISquib)

D Connect center airbag sensor assembly connector.

Measure resistance between D+ and D' on center airbag sensor assembly side of connector between center airbag sensor assembly and spiral cable.

E3 Resistance: 1 kil or more

1

1=10=

=00=3-—,— '

¡0:

s

Ü" □ v-^L. L

r1

*nccT.i

OK

NG ) Replace center airbag sensor assembly.

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.

RELEASE METHOD OF AIRBAG ACTIVATION PREVENTION MECHANISM

An airbag activation prevention mechanism is built into the connector for the squib circuit of the airbag system. When release of the airbag activation prevention mechanism is directed in the troubleshooting procedure, as shown in the illustration of the connectors (1) and (2) below, insert paper which is the same thickness as the male terminal, between the terminal and the short spring. CAUTION:

• NEVER RELEASE the airbag activation prevention mechanism on the steering wheel pad connector.

Do not release the airbag activation prevention mechanism unless specifically directed by the troubleshooting procedure.

If the paper inserted is too thick the terminal and short spring may be damaged, so always use paper the same thickness as the male terminal.

NOTICE:

Connector (T)

Canter Airbag Sensor

AfitemnbJv

Connector ®

Connector ®

Canter Airbag Sensor

AfitemnbJv

LH and RH front Airfrtty Sensors

Squib

LH and RH front Airfrtty Sensors

ABOQÎT

C«nter Airbag Senior Assombty Connector (Connect&t 01 Short Spring Wtt'orc Release

After Release

Paper

After Release

Spiral Cable Connector | Connector 2 \ Short Spring I

Before RHefee

AilKr Relict

Before RHefee

Diag. Code

Open in Squib Circuit

CIRCUIT DESCRIPTION- - — ------------- -------- - -

The squib circuit consists of the center airbag sensor assembly, spiral cable and the steering wheel pad (squib). It causes the airbag to deploy when the airbag deployment conditions are satisfied.

For details of the function of each component, see FUNCTION OF COMPONENTS on page AB-7. Diagnostic code 14 is recorded when an open is detected in the squib circuit.

Code. No.

Diagnosis

14

• Open circuit in D+ wire harness or D- wire harness of squib.

• Squib malfunction.

• Spiral cable malfunction.

• Center airbag sensor assembly malfunction.

DIAGNOSTIC CHART

1

Preparation.

2

Check squib circuit.

3

Check spiral cable.

OK

4

Check harness between center airbag sensor assembly and spiral cable.

OK

5

Check center airbag sensor assembly.

OK

6

Check squib.

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.

Go to step

Repair or replace spiral cable.

Repair or replace harness or connector between center air-bag sensor assembly and spiral cable.

Replace center airbag sensor assembly.

WIRING DIAGRAM

Steenng Wheel Pad

Squfbj-

Spiral

Canler StniorA&semùly

Safing Sensor h

INSPECTION PROCEDURE

Preparation.

LOCK

Preparation

Check

(1) Disconnect battery negative (-) terminal cable, and wait at least 20 seconds.

(2) Remove steering wheel pad (See page AB- 15).

CrtU[HOÏl

When storing steering wheel pad, keep upper surface of the pad facing upward.

Check squib circuit.

Grnltr Airbag

Sensor AiiemMy

Spiral Sfearing Whf?L Cable Pad iSyuibj

Disconnect center airbag sensor assembly connector.

Measure resistance between D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad.

Resistance: Less than 1Q

imdtf

Go to step

Check spiral cable.

Cflntor Air539 Senior Aisembl^

Spirn! Cable

Stearins Wheel Pad (Squib}

Disconnect connector between center airbag sensor assembly and spiral cable.

Measure resistance between D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad.

Resistance: Less than 1 Q

pjQ : Repair or replace spiral cable.

Check harness between center airbag sensor assembly and spiral cable.

Center Airbag Stnrer AiwmWv

Spiral £mring Wtiwl Cibla Pad ¡Squ.bl

Measure resistance between D+ and D- on center airbag sensor assembly side of connector between center airbag sensor assembly and spiral cable.

Resistance: Less than 1 Q

Repair or replace harness or connector be tween center airbag sensor assembly and spi ral cable. ___

Check center airbag sensor assembly

CtfiW Airtwfl Sensor AswmWy

Spiral Stearins Wheel Cable Pad iSquibh

(1) Connect connector to center airbag sensor as sembly.

(2) Connect connector between center airbag sen sor assembly and spiral cable.

(3) Using a service wire, connect D+ and D- on spi ral cable side of connector between spiral cable and steering wheel pad.

(4) Connect negative (-) terminal cable to battery, and wait at least 2 seconds.

(1) Turn ignition switch ACC or ON, and wait at least 20 seconds.

(2) Using SST, connect terminals Tc and El of check connector. SST 09843-18020

(3) Check diagnostic code. Diagnostic code 14 is not output.

I Codes other than code 14 may be output at this time, but this is not relevant to this check.

I^q - Replace center airbag sensor asembly.

Check squib .

Center ALrbag Spi-rai Steering Wheel

Senior Assembly Culil* Pad ISquibl

if. duj

Code 14

(1) Turn ignition switch LOCK.

(2) Disconnect battery negative (-) terminal cable, and wait at least 20 seconds.

(3) Connect steering wheel pad (squib) connector.

(4) Connect negative (-) terminal cable to battery, and wait at least 2 seconds.

(1) Turn ignition switch ACC or ON, and wait at least 20 seconds.

(2) Using SST, connect terminals Tc and El of check connector. SST 09843-18020

(3) Check diagnostic code. Diagnostic code 14 is not output.

Codes other than code 14 may be output at this time, but this is not relevant to this check.

Replace steering wheel pad.

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.

Diag. Code

Open in Front Airbag Sensor Circuit

CIRCUIT DESCRIPTION - __

The front airbag sensor detects the deceleration force in a frontal collision and is located in the front fender on the left and right sides.

For details of the function of each component, see FUNCTION OF COMPONENTS on page AB-7. Diagnostic code 15 is recorded when an open is detected in the front airbag sensor circuit. NOTICE: The front airbag sensor connector is equipped with an electrical connection check mechanism for the purpose of detecting an open in the front airbag sensor (See page AB-9). This mechanism is constructed so that when the terminals of the front airbag sensor have been connected (when the connector housing lock is in the locked condition), the connection detection pin on the wire harness side connects with the terminals for diagnosis use on the sensor side. If the connector is not properly connected, the diagnosis system may detect only a malfunction code, even though the airbag system is functioning normally.

When connecting the front airbag sensor connector, make sure it is connected properly. If diagnostic code 15 is displayed after the front airbag sensor connector has been connected, check again that it is properly connected.

Code No.

Diagnosis

15

• Open circuit in +S wire harness or -S wire harness of front airbag sensor.

• Front airbag sensor malfunction. Malfunction of electrical connection check mechanism of front airbag sensor.

• Center airbag sensor assembly malfunction.

DIAGNOSTIC CHART

1

Preparation.

2

Check front airbag sensor circuit (Measure resistance between terminals +SR and -SR, +SL and -SL of center air-bag sensor assembly connector).

OK

3

Check cenl

er airbag sensor assembly.

Go to step

From the results of the above inspection, the malfunctionin part can now be considered normal. ~o make sure of this, use the simulation method to check.

Replace center airbag sensor assembly.

4

Check front airbag sensor.

NG

Replace front airbag sensor.

OK

5

Check harness between center airbag sensor assembly and front airbag sensor.

NG

Repair or replace harness or connector between center air-bag sensor assembly and front

OK

airbag sensor (See page AB-21)

Replace front airbag sensor connector (See page AB-21).

WIRING DIAGRAM

CvntBf Airbag Sense* Asumbly

Front Airbes 3 er s or LH

From Squib

Frunl Airbag Sensor RH

INSPECTION PROCEDURE

Preparation

Check

Preparation.

LOCK

LOCK

(1) Disconnect battery negative H terminal cable, and wait at least 20 seconds.

(2) Remove steering wheel pad

tauter

When storing steering wheel pad, keep upper surface of pad facing upward.

Check front airbag sensor circuit (Measure resistance between terminals +SR and -SR, +SL and -SL of center airbag sensor assembly connector.).

Cantor A iriag Sensor A sscmolv

Cantor A iriag Sensor A sscmolv

J-1 r

-SH

1HDH

Disconnect center airbag sensor assembly connector.

Measure resistance between terminals +S R and -SR, +SL and -SL of harness side connector of center airbag sensor assembly.

Resistance: 755Q - 885il

G o to step

Check center airbag sensor assembly .

Center Airbefl Simar Antmbly

Spi idl Suae ri ng Whael Cable P*d (Sqgibh c=m=

Spi idl Suae ri ng Whael Cable P*d (Sqgibh c=m=

Code 15

Code 15

iHMi inri:

(1) Connect connector to center airbag sensor as sembly.

(2) Using a service wire, connect D+ and D- on spi ral cable side of connector between spiral cable and steering wheel pad. i3y Connect negative (-) terminal cable to battery, and wait at least 2 seconds.

(1) Turn ignition switch ACC or ON, and wait at least

20 seconds.

(2) Using SST, connect terminals Tc and E 1 of check connector. SST 09843-18020

(3) Check diagnostic code. Diagnostic code 15 is not output.

1 Codes other than code 15 may be output at this time, but this is not relevant to this check.

HJÇ , Replace center airbag sensor assembly.

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.

Check front airbag sensor.

-A

Disconnect front airbag sensor connector.

Measure resistance between each terminal of front airbag sensor.

Terminal Resistance

® S - (£■ A

755 ft - 805

■■+:■ S - :■■■ S

6S ü «A

Ua thtn 1 n

Do not touch ohmmeter probes strongly against terminals of front airbag sensor.

Make sure the front airbag sensor connector is properly connected.

Do not touch ohmmeter probes strongly against terminals of front airbag sensor.

Make sure the front airbag sensor connector is properly connected.

Replace front airbag sensor.

Check harness between center airbag sensor assembly and front airbag sensor.

Cflntsr AiTbag Senwr Assembly

Cflntsr AiTbag Senwr Assembly

(1) Disconnect center airbag sensor assembly con nector.

and -SL on the wire harness side of the center airbag sensor assembly connector.

Measure resistance between terminals +SR and -SR, +SL and -SL of harness side connector of front airbag sensor.

Resistance: Less than

Nu une ifr-Kon

Lightly touch ohmmeter probes at position shown in illustration.

Make sure the front airbag sensor connector is properly connected.

Repair or replace harness or connector between center airbag sensor assembly and front airbag sensor (See page AB-21).-

Replace front airbag sensor connector (See page AB-21).

Diag . Code

Airbag Warning Light System Malfunction

The airbag warning light is located on the combination meter.

When the airbag system is normal, the airbag warning light lights up for approx. 6 seconds after the ignition switch is turned from LOCK position to ACC or ON position, and then turns off automatically. If there is a malfunction in the airbag system, the airbag warning light lights up to inform the driver of the abnormality.

When terminals Tc and E1 of the check connector are connected, the diagnostic code is displayed by the blinking of the airbag warning light.

The airbag warning light circuit is equipped with an electrical connection check mechanism which detects when the connector to the center airbag sensor assembly is not properly connected. If the connector to the center airbag sensor assembly is not properly connected, the airbag warning light will not light up.

Diagnostic code 22 is recorded when a malfunction occurs in the airbag warning light system. If an OPEN malfunction occurs in the airbag warning light system, the airbag warning light does not light up, so that until the malfunction is repaired, the diagnostic codes (including code 22) cannot be confirmed.

Code No.

Diagnosis

22

• Open circuit in airbag warning light system

• Center airbag sensor assembly malfunction.

DIAGNOSTIC CHART

Troubleshooting for this system is different for when the airbag warning light does not light up and for when diagnostic code 22 is output. Confirm the problem symptoms first before selecting the appropriate troubleshooting procedure.

HINT: If airbag warning light does not light up, perform the following troubleshooting:

1

Check ECU-B fuse.

OK

2

Check connection of center airbag sensor assembly connector.

OK

3

Preparation.

4

Check airbag warning light circuit.

OK

5

Does airbag warning light come on?

Go to step

Repair.

Repair airbag warning light circuit.

From the results of the above inspection, the malfunctionin part can now be considered normal. o make sure of this, use the simulation method to check.

'Check terminal LA of center "alF bag sensor assembly and electrical connection check mechanism. If normal, replace center air-bag sensor assembly.

Is ECU-B fuse burnt out again?

Using simulation method, reproduce malfunction symptom:

Check ha"rness'~b"etween ECU-B_fuse" and airbag warning light, and ECU-B fuse and center airbag sensor assembly.

I- DIAGNOSTIC CHART

HINT: If diagnostic code 22 is output, perform the following troubleshooting:

Is diagnostic code 22 output again?

Using simulation method, reproduce malfunction symptoms (See page

Replace center airbag sensor assembly.

WIRING DIAGRAM

FuSihle

LinV.

Battary

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