TOYOTA AVENSIS 2005 Service Repair Manual

G25416
ECM
E10
K2
Kick Down SW
IP 6
6
CA 12
CJ
IG24
W–B Center J/B
31
8
IG2
W–B W
W
W–BKD *1
*1: LHD
G26420
Wire Harness Side:
(Connector Front View):
K2
–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–301
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
KICK–DOWN SWITCH CIRCUIT
CIRCUIT DESCRIPTION
The kick–down switch is turned ON when the accelerator pedal is fully de\
pressed and a signal is sent to the
ECM.
When the kick–down switch is turned ON, the ECM controls gear shiftin\
g according to the programmed shift
diagrams.
If a short circuit develops in the kick–down switch, the ECM disregards\
the kick–down signals and controls
shifting at the normal shift points.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(KICK DOWN SWITCH – BODY GROUND)
(a) Disconnect the kick–down switch connector.
(b) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
1 – Body groundBelow 1 Ω
NG REPAIR OR REPLACE HARNESS OR
CONNEC TOR ( SEE PAGE 01–32 )
OK
05L2O–01

G26835
1
2
K2
Switch Side:
(Connector Front View):

\f

\f
H42587KD
ECM: E13
E12E10E9
05–302–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
2 INSPECT KICK DOWN SWITCH
(a) Measure resistance according to the value(s) in the table below when kick–down switch is ON and OFF.
Standard:
Switch ConditionTester ConnectionSpecified Condition
Press continuously
(Kick–down switch is ON)1 – 2Below 1 Ω
Release
(Kick–down switch is OFF)
↑10 kΩ or higher
NG REPLACE KICK DOWN SWITCH
OK
3 CHECK HARNESS AND CONNECTOR(KICK DOWN SWITCH – ECM)
(a) Connect the kick–down switch connector.
(b) Disconnect the ECM connector.
(c) Measure resistance according to the value(s) in the table below when accelerator pedal is fully depressed or not.
Standard:
Switch ConditionTester ConnectionSpecified Condition
Fully depressed
(Kick–down switch is ON)E10 –31 (KD) –
Body groundBelow 1 Ω
Release
(Kick–down switch is OFF)
↑10 kΩ or higher
NG REPAIR OR REPLACE HARNESS OR
CONNEC TOR ( SEE PAGE 01–32 )
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
( SEE PAGE 05–229 )

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
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–297
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
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
05L2N–01

B59192
Wire Harness Side:
(Connector Front View):E8
05–298–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
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 pe\
dal.
(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:

Driving test should be done on a paved road (a nonskid road).

Make sure not to use the TRAC system when testing a vehicle equipped wit\
h 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 SYMP TOMS TABLE
( SEE PAGE 05–229 )
2 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ASSY NO.1 –
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 Ω
NG REPAIR OR REPLACE HARNESS OR
CONNEC TOR ( SEE PAGE 01–32 )
OK

D30685
Switch Side:
(Connector Front View):
E8
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–299
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
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 Ω
Release
Pattern select switch
(SNOW)
↑10 kΩ or higher
NG REPLACE PATTERN SELECT SWITCH ASSY
OK

D30751
Instrument Panel J/B AssyVehicle Front Side:
DA
DA
SNOW
05–300–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
4 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ASSY NO.1 – MULTIPLEX NETWORK BODY ECU)
(a) Connect the connector of pattern select 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) connector
and body ground.
Standard:
Switch ConditionTester ConnectionSpecified Condition
Press continuously
Pattern select switch (SNOW)DA – 14 (SNOW) –
Body groundBelow 1 Ω
Release
Pattern select switch (SNOW)
↑10 kΩ or higher
NG REPAIR OR REPLACE HARNESS OR
CONNEC TOR ( SEE PAGE 01–32 )
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
( SEE PAGE 05–229 )

G31165
E1
Electronically Controlled
Transmission Solenoid
R
E12SLECM
15
LG
4
SL+B
CPU
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–289
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P2769 TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT LOW (SHIFT SOLENOID VALVE SL)
DTC P2770 TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT HIGH (SHIFT SOLENOID VALVE SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ”ON” and ”OFF” by signals from the ECM in order to control the hydraulic
pressure operation, the lock–up relay valve, which then the controls operation of the lock–up clutch.
DTC No.DTC Detection ConditionTrouble Area
P2769ECM detects short in solenoid valve SL circuit (0.1 sec.) when
solenoid valve SL is operated (2–trip detection logic)
Short in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
P2770ECM detects open in solenoid valve SL circuit (0.1 sec.) when
solenoid valve SL is not operated (2–trip detection logic)
Open in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
MONITOR DESCRIPTION
Based on the signals from the Throttle Position Sensor, the Airflow Meter and the Crankshaft Position Sen-
sor, the ECM sends a signal to the shift solenoid valve SL to regulate the hydraulic pressure and provide
smoother gearshifts. The shift solenoid valve SL responds to commands from the ECM. The valve controls
the lock–up relay valve to perform the torque–converter lock–up function. If the ECM detects an open or
short circuit for shift solenoid valve SL, it will illuminate the MIL.
WIRING DIAGRAM
05CW7–06

D25234
Transmission Wire Side:
(Connector Front View):E1
SL
C95812ECM: E13
E12E10E9
SL
05–290–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(SL)
(a) Disconnect the transmission wire connector from the transaxle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 C (68 F)
4 – Body ground11 to 15 Ω
NG Go to step 3
OK
2 CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE – ECM)
(a) Connect the transmission wire connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard:
Tester ConnectionSpecified Condition
20 C (68 F)
E12 – 15 (SL) – Body ground11 to 15 Ω
NG REPAIR OR REPLACE HARNESS OR
CONNEC TOR ( SEE PAGE 01–32 )
OK
REPLACE ECM

D30680
Shift Solenoid Valve SL:
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–291
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
3 INSPECT SHIFT SOLENOID VALVE(SL)
(a) Remove the shift solenoid valve SL.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 C (68 F)
Solenoid Connector (SL) – Solenoid
Body (SL)11 to 15 Ω
(c) Connect positive (+) lead to the terminal of solenoid con-
nector, negative (–) lead to the solenoid body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (See Pub. No. RM1018E, page 40–51)

G31165
E1
Electronically Controlled
Transmission SolenoidECM
8
E12 SB
7
V
L
SB +B
CPU
–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–283
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0998 SHIFT SOLENOID ”F” CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE SB)
DTC P0999 SHIFT SOLENOID ”F” CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE SB)
CIRCUIT DESCRIPTION
Shift solenoid valve SB controls the 2nd brake (B1) and 1st and reverse brake pressures and performs the
1st and 2nd engine brake control.
Fail safe function:

S shift control prohibition.

On activating the fail–safe function during S shift, the driving mode\
turns to the normal D position.
DTC No.DTC Detection ConditionTrouble Area
P0998ECM detects short in solenoid valve SB circuit 2 times when
solenoid valve SB is operated (1–trip detection logic)
Short in shift solenoid valve SB circuit

Shift solenoid valve SB

ECM
P0999ECM detects open in solenoid valve SB circuit 2 times when
solenoid valve SB is not operated (1–trip detection logic)
Open in shift solenoid valve SB circuit

Shift solenoid valve SB

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OF\
F”. 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 o\
ther shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sen\
ding current to the circuit.)
(see page 05–241 ).
WIRING DIAGRAM
05L2M–01