Problem Symptoms Table

Proceed with troubleshooting of each circuit in the table below.

Symptom

Suspect Area

See page

•With the ignition switch at ACC or ON, the SRS warning light sometimes lights up after approx. 6 seconds have elapsed. •BRS warning light is always lit up even when ignition switch is in the LOCK position.

ISRS warning light system malfunction (Always lit up when ignition switch is in LOCK position.)

DI-180

•With the ignition switch at ACC or ON, the SRS warning light does not light up.

ISRS warning light system malfunction (Does not light up, when ignition switch is turned to ACC or ON.)

DI-182

•DTC not displayed.

•BRS warning light is always lit up a DTC check procedure. •DTC displayed without Tc and E1 terminal connection.

ITc terminal circuit

DI-185

CIRCUIT INSPECTION

DI4MB-02

DTC

11

Short in Squib Circuit (to Ground)

CIRCUIT DESCRIPTION

The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passenger airbag assembly. If causes the SRS to deploy when the SRS deployment conditions are satisfied. For details of the function of each component, see FUNCTION OF COMPONENTS on page RS-2 . DTC 11 is recorded when ground short is detected in the squib circuit.

DTC No.

DTC Detection Condition

Trouble Area

11

IShort circuit in squib wire harness (to ground)

ISquib malfunction

ISpiral cable malfunction lAirbag sensor assembly malfunction

IBteering wheel pad (D squib)

IFront passenger airbag assembly (P squib)

^Spiral cable lAirbag sensor assembly

IWire harness

WIRING DIAGRAM

(w/o Front Passenger Airbag)

Airbag Sensor Assembly

f

N

1

B

2

D squib

\

2

W

D+ 1

\

D-

Spiral Cable

V

y

(w/ Front Passenger Airbag)

f

>

1

B

4

D squib

i

\

2

W

D+ 3

\

D-

Spiral Cable

1

B

2

P squib

1

2

W

P+ 1

P-

J

R15075

INSPECTION PROCEDURE

CHECK:

For the connector (on the spiral cable side) between the spiral cable and steering wheel pad, measure the resistance between D+, D- and body ground. OK:

Resistance: 1MQ or higher

CHECK:

For the connector (on the airbag sensor assembly side) between the airbag sensor assembly and front passenger airbag assembly, measure the resistance between P+, P- and body ground. OK:

Resistance: 1MQ or Higher

Repair or replace harness or connector between the airbag sensor assembly and front passenger airbag assembly.

PREPARATION:

PREPARATION:

Connect connector to airbag sensor assembly. Using a service wire, connect D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad.

Using a service wire, connect P+ and P- on airbag sensor assembly side of connector between airbag sensor assembly and front passenger airbag assembly. Connect negative (-) terminal cable to battery, and wait at least 2 seconds. CHECK:

(a) Turn ignition switch to ACC or ON and wait at least 20 seconds.

Clear malfunction code stored in memory. (See page DI-148 )

Turn ignition switch to LOCK, and wait at least 20 seconds.

Turn ignition switch to ACC or ON, and wait at least 20 seconds.

Using SST, connect terminals Tc and E1 of DLC 1. SST 09843-18020 Check DTC

DTC 11 is not output.

HINT:

Codes other than code 11 may be output at this time, but they are not relevant to this check.

Airbag Sensor

Airbag Sensor

or or

DLC1

R05S96

AB0118 AB0119 R13006 W02042

Code 11

_JUl

PREPARATION:

(a) Turn ignition switch to LOCK.

(b) Disconnect negative (-) terminal cable from the battery, and wait at least 90 seconds.

(c) Connect steering wheel pad connector.

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

CHECK:

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

(b) Clear malfunction code stored in memory. (See page DI-148 )

(c) Turn ignition switch to LOCK, and wait at least 20 seconds.

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

(e) Using SST, connect terminals Tc and E1 of DLC 1. SST 09843-18020

DTC 11 is not output.

HINT:

Codes other than code 11 may be output at this time, but they are not relevant to this check.

HGGGG7

Check P squib.

P Squib

<CHZ

Airbag Sensor Assembly

D Squib

Spiral

DLC1

RO5B97

ABO118ABO119 R13OO6WO2O42

Code 11

DLC1

Code 11

RO5B97

ABO118ABO119 R13OO6WO2O42

H00008

PREPARATION:

(a) Turn ignition switch to LOCK.

(b) Disconnect negative (-) terminal cable from the battery, and wait at least 90 seconds.

(c) Connect front passenger airbag assembly connector.

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

CHECK:

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

(b) Clear malfunction code stored in memory. (See page DI-148 )

(c) Turn ignition switch to LOCK, and wait at least 20 seconds.

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

(e) Using SST, connect terminals Tc and E1 of DLC 1. SST 09843-18020

DTC 11 is not output.

HINT:

Codes other than code 11 may be output at this time, but they are not relevant to this check.

H00008

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.

Check spiral cable.

Airbag Sensor P Squib Assembly

D Squib

f

PREPARATION:

Disconnect connector between airbag sensor assembly and spiral cable.

CHECK:

Measure resistance between D+ on spiral cable side of connector between spiral cable and steering wheel pad and body ground. OK:

Resistance: 1MQ or Higher

H00009

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

DI4MC-02

DTC

12

Short in Squib Circuit (to B+)

CIRCUIT DESCRIPTION

The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passenger airbag assembly. It causes the SRS to deploy when the SRS deployment conditions are satisfied. For details of the function of each components, see FUNCTION OF COMPONENTS on page RS-2 . DTC 12 is recorded when a B+ short is detected in the squib circuit.

DTC No.

DTC Detection Condition

Trouble Area

12

IShort circuit in squib wire harness (to B+) ISquib malfunction ISpiral cable malfunction lAirbag sensor assembly malfunction

IBteering wheel pad (D squib)

iFront passenger airbag assembly (P squib)

ISpiral cable lAirbag sensor assembly

IWire harness

WIRING DIAGRAM

Refer to page DI-155 for the WIRING DIAGRAM.

INSPECTION PROCEDURE

CHECK:

For the connector (on the spiral cable side) between the spiral cable and steering wheel pad, measure the voltage between D+, D- and body ground. OK:

Voltage: 0 V

Check P squib circuit.

P Squib

P Squib

AB0119 R05898 R14300

Airbag Sensor Assembly

Airbag Sensor Assembly

CHECK:

For the connector (on the airbag sensor assembly side) between airbag sensor assembly and front passenger airbag assembly, measure the voltage between P+, P- and body ground. OK:

Voltage: 0V

Repair or replace harness or connector between the airbag sensor assembly and front passenger airbag assembly.

PREPARATION:

P Squib

P Squib

^ Airbag Sensor

Assembly

Spiral Cable

DLC1

rgfeffl m

Code 12

AB0069

AB0069W01933 AB0118 AB0119 R13006W02043

PREPARATION:

Connect connector to airbag sensor assembly. Using a service wire, connect D+ and D- on spiral cable side of connector between spiral cable and steering wheel pad.

Using a service wire, connect P+ and P- on airbag sensor assembly side of connector between airbag sensor assembly and front passenger airbag assembly. Connect negative (-) terminal cable to battery, and wait at least 2 seconds. CHECK:

DTC 12 is not output.

HINT:

Codes other than code 12 may be output at this time, but they are not relevant to this check.

Turn ignition switch to ACC or ON and wait at least 20 seconds.

Clear malfunction code stored in memory. (See page DI-148 )

Turn ignition switch to LOCK, and wait at least 20 seconds.

Turn ignition switch to ACC or ON, and wait at least 20 seconds.

Using SST, connect terminals Tc and E1 of DLC1. SST 09843-18020 Check DTC.

H00012

Airbag Sensor

Airbag Sensor

DLC1

or or

DLC1

R05896

AB0118 AB0019 R13006 W02043

Code 12

JUU1_

PREPARATION:

(a) Turn ignition switch to LOCK.

(b) Disconnect negative (-) terminal cable from the battery, and wait at least 90 seconds.

(c) Connect steering wheel pad connector.

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

CHECK:

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

(b) Clear malfunction code stored in memory. (See page DI-148 )

(c) Turn ignition switch to LOCK, and wait at least 20 seconds.

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

(e) Using SST, connect terminals Tc and E1 of DLC1. SST 09843-18020

DTC 12 is not output.

HINT:

Codes other than code 12 may be output at this time, but they are not relevant to this check.

H00013

Check P squib.

P Squib

Airbag Sensor Assembly

D Squib ACC

Spiral

DLC1

fSMfi]

R05897

AB0118 AB0119 R13006 W02043

Code 12

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment