TOYOTA AVENSIS 2005 Service Repair Manual

D30688
ECM
MPX2
MPX1 29
18 E10 11
B8
22 SNOWI14
Integration Relay
8 14
DA B E8
ECT Pattern Select SW
*1: RHD
*2: LHD 4 1 W−B
CH
CF
CA 8
11
6
W−B
IPE10 MPX1
MPX2
*1
*2
B8
(*3) Pattern Select Switch (ECT SNOW Switch)
When the ECT SNOW switch is pushed, the switch contact is made and the ECT SNOW mode is selected.
To cancel the ECT SNOW mode, push the ECT SNOW switch once again. The ECT SNOW mode is automatical-
ly cancelledout when the ignition switch is turned ”OFF”.
*3
Instrument Panel J/B 05−630
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
PATTERN SELECT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
Integration relay receives pattern select switch information, and sends it through the multiplex communica-
tion system to the ECM.
ECT SNOW is the system that operates the throttle motor to control engine output to reduce skidding of the
driving wheels, guarantee takeoff acceleration, driving straightness and turning stability.
WIRING DIAGRAM
05JLL−01

B59192
Wire Harness Side:
(Connector Front View):E8
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−63 1
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
1 DRIVING TEST
(a) Start the engine.
(b) Turn the ECT SNOW switch ”OFF” (Normal drive mode).
(c) Confirm vehicle response by driving from a parked position to fully depressing the accelerator pedal.
(d) Turn the ECT SNOW switch ”ON” and perform the same check as (c).
Confirm that there is a difference between ECT SNOW switch ”ON” and ”OFF”.
HINT:
S Driving test should be done on a paved road (a nonskid road).
S Make sure not to use the TRAC system when testing a vehicle equipped with one.
OK:
There is a difference in acceleration between ”ON” and ”OFF”.
NG Go to step 2
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05 −545)
2 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ASSY − BODY
GROUND)
(a) Disconnect the connector of pattern select switch.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
1− Body groundBelow 1

NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK

D30685
Switch Side:
(Connector Front View):
E8
05−632− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
3 INSPECT PATTERN SELECT SWITCH ASSY
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch ConditionTester ConnectionSpecified Condition
Press continuously
Pattern select switch
(SNOW)
1−4Below 1

Release
Pattern select switch
(SNOW)
10 k
or higher
NG REPLACE PATTERN SELECT SWITCH ASSY
OK

D30751
Instrument Panel J/B AssyVehicle Front Side:
DA
DA
SNOW
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−633
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ASSY −
INTEGRATION RELAY)
(a) Connect the connector of pattern select switch.
(b) Disconnect the instrument panel J/B assy (integration
relay) connector.
(c) M easur e t he r esist ance bet ween t er m inal SNO W of instrument panel J/B assy (integration relay) connector
and body ground.
Standard:
Switch ConditionTester ConnectionSpecified Condition
Press continuously
Pattern select switch (SNOW)DA− 14 (SNOW) −
Body groundBelow 1

Release
Pattern select switch (SNOW)
10 k
or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05 −545)

− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−625
AVENSIS Supplement (RM1045E)
TRANSMISSION CONTROL SWITCH CIRCUIT
CIRCUIT DESCRIPTION
When moving the shift lever into the S position using the transmission control switch, it is possible to switch
the shift range position between ”1” (first range) and ”5” (fifth range).
Shifting up ”+” once raises one shift range position, and shifting down ”−” lowers one shift range position.
05CW8−02

D30750
ECM
SPT1
SFTD
SFTU L
B
R20
21
22 E10
7
1
2
5J17
J/C
W−B(*1)
(*2) A
A S
SFTD
SFTU
E IG 3 R−WT7
Transmission Control SW
Center J/B
Driver Side J/B
I13
Ignition SW
Engine Room J/B No.4
FL MAIN
Battery
*1: LHD
*2 RHDIJIK IPJ15
J/C A AM1IG1 R−W
W−B B−G
G−Y7
1
CA
7
DB
9
DA
1
DH AM1 GAUGE1 IG1Relay
5
13
2 DN
31
1
4D1
4B ALT
21E10
E10
W−B
W−B
CG
R−W 1
5
DH
G−R
G−Y
W−B
B−G R−W
B−G 05−626
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM

G23398
Wire Harness Side:
(Connector Front View):T7
G23398
Wire Harness Side:
(Connector Front View):
T7
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −627
AVENSIS Supplement (RM 1045E)
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(BATTERY − TRANSMISSION CONTROL
SWITCH)
(a) Disconnect the transmission control switch connector of
shift lock control unit assy.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Switch ConditionTester ConnectionSpecified Condition
IG switch ON3− Body ground10to 14V
IG switch OFF
Below 1 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
2 CHECK HARNESS AND CONNECTOR(TRANSMISSION CONTROL SWITCH −
BODY GROUND)
(a) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
5− Body groundBelow 1
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK

G28380
Switch Side:
(Connector Front View):
T7
05−628− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
3 INSPECT SHIFT LOCK CONTROL UNIT ASSY(TRANSMISSION CONTROL
SWITCH)
(a) Measure resistance between each terminal of shift lock
control unit assy when the shift lever is moved to each
position.
Standard:
Shift PositionTester ConnectionSpecified Condition
S, ”+” and ”−”3−7Below1
Except S, ”+” and ”−”
10kor higher
Press continuously
”+”
(Up shift)
2−5Below1
S
10kor higher
Press continuously
”−”
(Down shift)
1−5Below1
S
10kor higher
NG REPLACE SHIFT LOCK CONTROL UNIT ASSY
OK

G20666
ON
E 13
E 12E 11E10E9
SPT 1(+)
ECM:
C82
160SFTU
E 13E 12E 11E10E9
SFTD
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −629
AVENSIS Supplement (RM 1045E)
4 CHECK HARNESS AND CONNECTOR(TRANSMISSION CONTROL SWITCH −
ECM)
(a) Connect the transmission control switch connector of shift
lock control unit assy.
(b) Turn the ignition switch to the ON position, and measure
the voltage according to the value(s) in the table below
when the shift lever is moved to each position.
Standard:
Shift PositionTester ConnectionSpecified Condition
S, ”+” and ” −”E 10 − 20 (SPT 1) −
Body ground1 0to 14V
Except S, ”+” and ” −”
Below 1 V
(c) Turn the ignition switch to the LOCK position.
(d) Disconnect the ECM connector.
(e) Measure the resistance according to the value(s) in the
table below when the shift lever is moved to each position.
Standard:
Shift PositionTester ConnectionSpecified Condition
Press continuously
”+”
(Up shift)E 10 − 22 (SFTU) −
Body groundBelow 1
S
10k  or higher
Press continuously
”− ”
(Down shift)E 10 − 21 (SFTD) −
Body groundBelow 1
S
10k  or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05 −545)

G31165
E1
Electronically Controlled
Transmission SolenoidECM
9
E12 SR
9
V
BR
−W
SR +B
CPU
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−619
AVENSIS Supplement (RM1045E)
DTC P0985 SHIFT SOLENOID ”E” CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE SR)
DTC P0986 SHIFT SOLENOID ”E” CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE SR)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with ”ON” and ”OFF” operation of the shift solenoid valves
SL1, SL2, SL3, S4 and SR which is controlled by the ECM. If an open or short circuit occurs in either of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the vehicle to be
operated smoothly (Fail safe function).
DTC No.DTC Detection ConditionTrouble Area
P0985ECM detects short in solenoid valve SR circuit 2 times when
solenoid valve SR is operated (1 −trip detection logic)S Short in shift solenoid valve SR circuit
S Shift solenoid valve SR
S ECM
P0986ECM detects open in solenoid valve SR circuit 2 times when
solenoid valve SR is not operated (1 −trip detection logic)S Open in shift solenoid valve SR circuit
S Shift solenoid valve SR
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail −safe function and turns the other shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sending current to the circuit.)
(see page 05 −560).
WIRING DIAGRAM
05CW5 −03