Lexus ES300 (1997 year). Manual — part 389

AB0069

W01933

AB0118

R13006

AB0069

AB0118

W02042

H00006

Airbag Sensor
Assembly

Spiral
Cable

P Squib

D Squib

P+

P–

D+

D–

ACC

ON

or

Code 11

DLC1

Tc

E1

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–333

485

1997 LEXUS ES300 (RM511U)

NG

Repair or replace harness or connector be-
tween the airbag sensor assembly and front
passenger airbag assembly.

OK

4

Check airbag sensor assembly.

PREPARATION:
(a)

Connect connector to airbag sensor assembly.

(b)

Using a service wire connect D+ and D– on spiral cable
side of connector between spiral cable and steering
wheel pad.

(c)

Using a service wire, connect P+ and P– on airbag sensor
assembly side of connector between airbag sensor as-
sembly and front passenger airbag assembly.

(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 se-
conds.

(b)

Clear malfunction code stored in memory
(See page

DI–324

).

(c)

Turn ignition switch to LOCK, and wait at least 20 se-
conds.

(d)

Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.

(e)

Using SST, connect terminals Tc and E1 of DLC 1.
SST 09843–18020

(f)

Check DTC

OK:

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.

NG

Replace airbag sensor assembly.

OK

R05896

AB0118

R13006

AB0119

W02042

H00007

Spiral
Cable

P Squib

D Squib

ACC

ON

or

DLC1

Code 11

E1

Tc

Airbag Sensor
Assembly

DI–334

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

486

1997 LEXUS ES300 (RM511U)

5

Check D squib.

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 the battery, and
wait at least 2 seconds.

CHECK:
(a)

Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.

(b)

Clear malfunction code stored in memory
(See page

DI–324

).

(c)

Turn ignition switch to LOCK, and wait at least 20 se-
conds.

(d)

Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.

(e)

Using SST, connect terminals Tc and E1 of DLC 1.
SST 09843–18020

(f)

Check DTC.

OK:

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.

NG

Replace steering wheel pad.

OK

R05897

AB0118

R13006

AB0119

W02042

H00008

Airbag Sensor
Assembly

Spiral
Cable

P Squib

D Squib

ACC

ON

or

DLC1

E1

Tc

Code 11

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

DI–335

487

1997 LEXUS ES300 (RM511U)

6

Check P squib.

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 se-
conds.

(b)

Clear malfunction code stored in memory
(See page

DI–324

).

(c)

Turn ignition switch to LOCK, and wait at least 20 se-
conds.

(d)

Turn ignition switch to ACC or ON, and wait at least 20 se-
conds.

(e)

Using SST, connect terminals Tc and E1 of DLC 1.
SST 09843–18020

(f)

Check DTC.

OK:

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.

NG

Replace front passenger airbag 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

R05899

R14301

H00009

Airbag Sensor
Assembly

Spiral
Cable

P Squib

D Squib

D+

(+)

(–)

DI–336

–

DIAGNOSTICS

SUPPLEMENTAL RESTRAINT SYSTEM

488

1997 LEXUS ES300 (RM511U)

7

Check spiral cable.

PREPARATION:
Disconnect connector between airbag sensor assembly and
spiral cable.
CHECK:
Measure resistance between D+ on spiral cable side of connec-
tor between spiral cable and steering wheel pad and body
ground.
OK:

Resistance: 1M

Ω

or Higher

NG

Repair or replace spiral cable.

OK

Repair or replace harness or connector be-
tween airbag sensor assembly and spiral
cable.