ESP TOYOTA AVENSIS 1999 Supplement

CAUTION
This manual does not include all the necessary items about repair and service. This manual is made
for the purpose of the use for the persons who have special techniques and certifications. In the
cases that non–specialized or uncertified technicians perform repair or service only using this manu-
al or without proper equipment or tool, that may cause severe injury to you or other people around
and also cause damage to your customer’s vehicle.
In order to prevent dangerous operation and damages to your customer’s vehicle, be sure to follow
the instruction shown below.

Must read this manual thoroughly. It is especially important to have good understanding all the
contents written in the PRECAUTION of ”IN” section.

The service method written in this manual is very effective to perform repair and service. When
performing the operations following the procedures using this manual, be sure to use tools spe-
cified and recommended. If using non–specified or recommended tools and service method,
be sure to confirm safety of the technicians and any possibility of causing personal injury or
damage to the customer’s vehicle before starting the operation.

If part replacement is necessary, must replace the part with the same part number or equivalent
part. Do not replace it with inferior quality.

It is important to note that this manual contains various ”Cautions” and ”Notices” that must be
carefully observed in order to reduce the risk of personal injury during service or repair, or the
possibility that improper service or repair may damage the vehicle or render it unsafe. It is also
important to understand that these ”Cautions” and ”Notices” are not exhaustive, because it is
important to warn of all the possible hazardous consequences that might result from failure to
follow these instructions.

Detection Item DTC No.
(See page)Trouble AreaSRS
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below. (Proceed to the page given for that circuit).
Warming Light
ON
ON
ON
ON
ON
ON
ON
DTC No.
Indicates the diagnostic trouble code.
Page or Instructions
Indicates the page where the inspection procedure
for each circuit is to be found, or gives instructions
for checking and repairs. 

Detection Item
Indicates the system of the problem or
contents of the problem. Trouble Area
Indicates the suspect area of the
problem. 
11
(DI–165)
12
(DI–170)
13
(DI–174)
14
(DI–178)
15
(DI–178)
16
airbag sensor assembly malfunction Front airbag sensor assembly (RH)
malfunction Short in D squib circuit (to ground)
Short in D squib circuit (to B)
Short in D squib circuit
Open in D squib circuit
Front airbag sensor assembly (LH)
malfunction Steering wheel pad (squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
 Front airbag sensor assembly (RH)
 Wire harness
 Front airbag sensor assembly (LH)
 Wire harness  Steering wheel pad (squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
 Steering wheel pad (squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
 Steering wheel pad (squib)
 Spiral cable
 Airbag sensor assembly
 Wire harness
Airbag sensor assembly
 Front passenger airbag sensor assembly (squib)
 Airbag sensor assembly Short in P squib circuit (to ground)ON
– INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN–25
4. DIAGNOSTIC TROUBLE CODE CHART
The inspection procedure is shown in the table below. This table permits efficient and accurate troubleshoot-
ing using the diagnostic trouble codes displayed in the diagnostic trouble code check. Proceed with trouble-
shooting in accordance with the inspection procedure given in the diagnostic chart corresponding to the
diagnostic trouble codes displayed. The Supplemental Restraint System diagnostic trouble code chart is
shown below as an example.

H03703
Shape Size
ø = 8
(0.31)
L = 16
(0.63)mm (in.)
Shape Size
Shape Size
ø = 6
(0.24)
L = 20
(0.79)ø = 6
(0.24)
L = 18
(0.71)
ø = 6
(0.24)
L = 16
(0.63)ø = 5.22
(0.2055)
L = 16
(0.63)ø = 5
(0.20)
L = 18.5
(0.728)
ø = 8
(0.31)ø = 6
(0.24)
– BODYINSTRUMENT PANEL
BO–15
HINT:
Screw shapes and size are indicated in the table below. The codes (A – H) correspond to those indicated
on the previous page.