2005 TOYOTA AVENSIS instrument panel

05C94±02
05±920±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description (1)When troubleshooting Euro±OBD vehicles, theonly difference from the usual troubleshooting pro-
cedure is that you connect the vehicle to the OBD
scan tool complying with ISO 15031±4 or hand±
held tester, and read off various data output from
the vehicle's ECM.
(2)Euro±OBD regulations require that the vehicle's on±board computer illuminates the Check Engine
Warning Light (Malfunction Indicator Lamp)/CHK
ENG (MIL) on the instrument panel when the com-
puter detects a malfunction in the emission control
system/components or in the driving system com-
ponents which affect vehicle emissions, or a mal-
function in the computer. In addition to CHK ENG
(MIL) illuminating when a malfunction is detected,
the applicable Diagnostic Trouble Codes (DTCs)
prescribed by ISO15031±6 are recorded in the
ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory. (3)To check the DTCs, connect the OBD scan tool orhand±held tester to the Data Link Connector 3
(DLC3) on the vehicle. The OBD scan tool or hand±
held tester also enables you to erase the DTCs and
check freezed frame data and various forms of en-
gine data (For operating instructions, see the OBD
scan tool's instruction book.).
(4)DTCs include ISO controlled codes and manufac- turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±931).
(5) The diagnosis system operates in normal mode during normal vehicle use. It also has a check mode
for technicians to simulate malfunction symptoms
and troubleshoot. Most DTCs use 2 trip detection
logic (*) to prevent erroneous detection, and ensure
thorough malfunction detection. By switching the
ECM to check mode when troubleshooting, techni-
cians can cause the CHK ENG (MIL) to illuminate
for a malfunction that is only detected once or mo-
mentarily (Hand±held tester only) (See step 2).

D30751
Instrument Panel J/B Assy
Vehicle Front Side:
DA
DA
SNOW
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±979
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ASSY ±
INTEGRATION RELAY)
(a) Connect the connector of pattern select switch (ECT
SNOW switch).
(b) Disconnect the instrument panel J/B assy (integration
relay) connector.
(c) Measure the resistance between terminal SNOW of
instrument panel J/B assy (integration relay) and body
ground.
Standard:
Switch conditionTester connectionSpecified condition
Press continuously
Pattern select switchDA±14 (SNOW) ± Body
groundBelow 1

Release
Pattern select switchDA±14 (SNOW) ± Body
ground10 k
or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page xx±xxx)

0567W±10
05±1000±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the DTC check but the trouble still o\
ccurs, check the circuits for each
symptom in the order given in the charts on the following pages and proceed to \
the page given for trouble-
shooting.
The Matrix Chart is divided into 3 chapters.

If the instruction ºProceed to next circuit inspection shown on matri\
x chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then ch\
eck
and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
SymptomSuspect AreaSee page
No up±shift (A particular gear, from 1st to O/D gear, is not up±
shifted)ECM01±32
No down±shift (A particular gear, from O/D to 1st gear, is not
down±shifted)ECM01±32
No lock±up or No lock±up off
3. Stop light switch circuit
4. Engine coolant temp. sensor circuit
5. Throttle position sensor circuit
6. ECM05±1018
05±16
05±16
01±32
Shift point too high or too low
1. Engine coolant temp. sensor circuit
2. Throttle position sensor circuit
3. ECM05±16
05±16
01±32
No gear change by shifting into º+º or º±º while the shif\
t lever is in
the Sposition1. Transmission control switch circuit
2. ECM05±103501±32
Up±shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ATF temp. sensor circuit
3. ECM05±16
05±1003
05±1005 01±32
Harsh engagement (N
D)ECM01±32
Harsh engagement (Lock±up)ECM01±32
Harsh engagement (Any driving range)ECM01±32
Poor acceleration
1. Pattern select switch circuit (ECT SNOW switch)
2. Instrument panel J/B assy (Integration relay)
3. ECM05±1040
01±32
Engine stalls when starting off or stoppingECM01±32
No kick±down1. Kick±down switch circuit
2. ECM05±103301±32
No 2nd start
1. Pattern select switch circuit (ECT SNOW switch)
2. Transmission control switch circuit
3. Park/neutral position switch circuit
4. Instrument panel J/B assy (Integration relay)
5. ECM05±1040
05±1035
05±1024
05±104001±32








H41439
D SquibAirbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Color: Orange
A
B
C
D
E
F
05±1202
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCB0101/14OPEN IN D SQUIB CIRCUIT
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assy center, the spiral cable sub±assy and the horn button
assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions a\
re fulfilled.
DTC B0101/14 is recorded when an open circuit is detected in the D squib\
circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0101/14

Open circuit in D+ wire harness or D± wire harness of D
squib

D squib malfunction

Spiral cable sub±assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1198.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER ± HORN BUTTON
ASSY)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assy
center and the horn button assy.
(d) Measure the resistance between D+ and D± of the con- nector ºEº.
OK:
Resistance: Below 1

NG Go to step 4
OK
056LY±04







\b

H40036
D SquibDLC3 DTC B0101/14
CG TCAirbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
C
D
E
F







H41440
D Squib Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Instrument Panel Wire
A
B
C
D
E
F
05±1204
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK HORN BUTTON ASSY(D SQUIB)
(a)Turn the ignition switch to the LOCK position.
(b)Disconnect the negative (±) terminal cable from the bat- tery, and wait for at least 90 seconds.
(c)Connect the connectors to the horn button assy.
(d)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(e)Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(f)Clear the stored DTCs in the memory (See page 05±1184).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(i)Check the DTCs (See page 05±1184). OK:
DTC B0101/14 is not output.
HINT:
Codes other than code B0101/14 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
OK
USE SIMULATION METHOD TO CHECK
4 CHECK INSTRUMENT PANEL WIRE
(a) Disconnect the instrument panel wire connector from the spiral cable sub±assy.
(b) Measure the resistance between D+ and D± of the con- nector ºCº.
OK:
Resistance: Below 1

NG REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK

H01451
A30
D Squib
1
2Y±B
YA2714Airbag Sensor Assy Center
Spiral Cable
Sub±assyA2713D+
D± 05±1198
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B0100/13 SHORT IN D SQUIB CIRCUIT
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assy center, the spiral cable sub±assy and the horn button
assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions are fulfilled.
DTC B0100/13 is recorded when a short circuit is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0100/13

Short circuit between D+ wire harness and D± wire harness
of D squib

D squib malfunction

Spiral cable sub±assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
056LX±04

\b






\bH41440
D Squib Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Instrument Panel Wire
A
B
C
D
E
F
\b




H41441
D Squib Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Color: Orange
A
B
C
D
E
F
D± D+
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1201
AVENSIS REPAIR MANUAL (RM1018E)
5CHECK INSTRUMENT PANEL WIRE
(a)Disconnect the instrument panel wire connector from the
spiral cable sub±assy.
(b)Release the activation prevention mechanism built in the connector of the connector ºBº (See page
05±1184).
(c)Measure the resistance between D+ and D± of the con- nector ºCº.
OK:
Resistance: 1 M
or Higher
NGREPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK
6CHECK SPIRAL CABLE SUB±ASSY
(a)Release the activation prevention mechanism built in the connector ºDº (See page 05±1184).
(b) Measure the resistance between D+ and D± of the con-
nector ºEº.
OK:
Resistance: 1 M
or Higher
NG REPLACE SPIRAL CABLE SUB±ASSY
OK
USE SIMULATION METHOD TO CHECK

05C5W±01
H40533
A26A27
A28
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1195
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
Terminal No.Terminal SymbolDestination (Wire Harness Side)
A±Half Connection Detection Mechanism
B±Half Connection Detection Mechanism
A27±3LACombination Meter Assy (SRS Warning Light)
A27±4GSW1 DBEWIntegration relay
A27±5IG2IGN Fuse
A27±7P2±Instrument Panel Passenger Airbag Assy (P Squib, 2nd step)
A27±8P2+Instrument Panel Passenger Airbag Assy (P Squib, 2nd step)
A27±9SR+Airbag Front RH Sensor
A27±10P+Instrument Panel Passenger Airbag Assy (P Squib)
A27±11P±Instrument Panel Passenger Airbag Assy (P Squib)
A27±12SILDLC3
A27±13D±Horn Button Assy (D Squib)
A27±14D+Horn Button Assy (D Squib)
A27±15SL+Airbag Sensor Front LH
A27±16D2+Horn Button Assy (D Squib, 2nd step)
A27±17D2±Horn Button Assy (D Squib,2nd step)
A27±19TCDLC3
A27±20SR±Airbag Front RH Sensor
A27±23 (*1)GSW2ECM
A27±26SL±Airbag Sensor Front LH
A27±27E1Ground
A27±28E2Ground
A26±2 (*2)LBE±Front Seat Inner Belt Assy LH (Buckle Switch LH)
A26±3 (*2)LSP±Seat Position Airbag Sensor
A26±4 (*2)LSP+Seat Position Airbag Sensor
A26±7PL±Front Seat Outer Belt Assy LH (P/T Squib LH)
A26±8PL+Front Seat Outer Belt Assy LH (P/T Squib LH)
A26±9 (*3)ICL+Curtain Shield Airbag Assy LH (Curtain Shield Squib LH)
A26±10 (*3)ICL±Curtain Shield Airbag Assy LH (Curtain Shield Squib LH)
A26±11SFL±Separate Type Front Seat Back Assy (Side Squib LH)
A26±12SFL+Separate Type Front Seat Back Assy (Side Squib LH)
A26±16BBL+Side Airbag Sensor Assy LH
A26±18BBL±Side Airbag Sensor Assy LH
A26±19 (*2)LBE+Front Seat Inner Belt Assy LH (Buckle Switch LH)