TOYOTA AVENSIS 2005 Service Repair Manual

D30688
ECM
MPX2
MPX1 29
23 E10 11
I14
22 SNOWI14
Integration Relay
8
Driver Side J/B14
DA B E8
ECT Pattern Select SW
*1: RHD
*2: LHD 4 1 W±B
CH
CF
CA 8
11
6
W±B
IPI14 E10 MPX1
MPX2
*1
*2
05±1040± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
PATTERN SELECT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
When SNOW mode is selected with the pattern select switch, the ECM controls the solenoid valves and the
transmission starts from 2nd gear.
In D range, the transmission automatically shifts up through 3rd to O/D as usual.
WIRING DIAGRAM
05C8Q±01

D30685
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1041
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT PATTERN SELECT SWITCH ASSY
(a) Disconnect the connector of pattern select switch.
(b) Check the continuity between terminals 1 and 4 of the pat-
tern select switch.
OK:
Pattern select switchSpecified condition
Press continuously Pattern select switchContinuity
Release Pattern select switchNo continuity
NG REPLACE PATTERN SELECT SWITCH ASSY
OK
2 CHECK HARNESS AND CONNECTOR(PATTERN SELECT SWITCH ± INTEGRA-
TION RELAY, PATTERN SELECT SWITCH ± BODY GROUND)
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE

± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1035
AVENSIS REPAIR MANUAL (RM1018E)
TRANSMISSION CONTROL SWITCH CIRCUIT
CIRCUIT DESCRIPTION
When shifting the shift lever into S range using the transmission control switch, it is possible to shift in 1 to
4 positions.
Shifting º+º once changes up 1 shift range position, º±º once changes down 1 shift range position respective-
ly.
05C8P±01

D30750
ECM
SPT1
SFTD
SFTU L
B
R8
30
23 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 AM1 IG1R±W
W±B B±G
G±Y7
1
CA
7
DB
9
DA
1
DH AM1 GAUGE1 IG1 Relay
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±1036
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

H42584
SPT E1
H42584
SFTU
SFTD E1
H42585
SFTD (+)
E (±) SFTU (+)
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1037
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 CHECK ECM
(a) Turn the ignition switch to ON.
(b) Measure the voltage between terminals SPT and E1 of
the ECM.
OK:
Shift positionSpecified condition
Except S positionBelow 1 V
S position7.5 to 14 V
NG Go to step 6
OK
2 CHECK ECM
(a) Measure the voltage between terminals E1 and that
SFTU as well as SFTD of the ECM.
OK:
Shift positionTester connectionSpecified condition
Shift to º+º
(Up shift)SFTU ± E1Below 1.5 V
S positionSFTU ± E17.5 to 14 V
Shift to º±º
(Down shift)SFTD ± E1Below 1.5 V
S positionSFTD ± E17.5 to 14 V
OK NORMAL
NG
3 INSPECT SHIFT LOCK CONTROL UNIT ASSY(TRANSMISSION CONTROL
SWITCH)
(a) Turn the ignition switch to OFF.
(b) Disconnect the transmission control switch connector.
(c) Measure the resistance between terminals E and that
SFTU as well as SFTD of the transmission control switch
connector.
OK:
Shift positionTester connectionSpecified condition
Shift to º+º
(Up shift)SFTU ± EContinuity
S positionSFTU ± ENo continuity
Shift to º±º
(Down shift)SFTD ± EContinuity
S positionSFTD ± ENo continuity
NG REPLACE SHIFT LOCK CONTROL UNIT ASSY
OK


G25441
SFTUSFTD
SFTD
SFTU
E10
A
05±1038± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK HARNESS AND CONNECTOR(ECM ± TRANSMISSION CONTROL
SWITCH)
(a) Disconnect the ECM connector.
(b) Check the continuity between ECM and transmission
control switch.
OK:
Tester connectionSpecified condition
SFTU (E10±23) ± SFTU (A±2)Continuity
SFTD (E10±30) ± SFTD (A±1)Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
5 CHECK HARNESS AND CONNECTOR(TRANSMISSION COTROL SWITCH ± BODY
GROUND)
(a) Check the continuity between body ground and E of the transmission control switch connector (wire
harness side).
OK:
Continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
CHECK AND REPLACE ECM

H42585
IG
S

H42587
SPT (+) E1 (±)
E10
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1039
AVENSIS REPAIR MANUAL (RM1018E)
6 INSPECT SHIFT LOCK CONTROL UNIT ASSY(TRANSMISSION CONTROL
SWITCH)
(a) Turn the ignition switch to OFF.
(b) Disconnect the transmission control switch connector.
(c) Check the continuity between terminals IG and S of the
transmission control switch.
OK:
Shift positionTester connectionSpecified condition
Except S positionIG ± SNo continuity
S positionIG ± SContinuity
NG REPLACE SHIFT LOCK CONTROL UNIT ASSY
OK
7 CHECK HARNESS AND CONNECTOR
(a) Connect the transmission control switch connector.
(b) Disconnect the ECM connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage between terminals SPT and E1 of
the ECM connector.
OK:
Shift positionTester connectionSpecified condition
Except S positionSPT ± E1Below 1 V
S positionSPT ± E17.5 to 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
CHECK AND REPLACE ECM

G25416
ECM
KD *
112
E10 K2
Kick Down SW
IP6
CA
12 CJ
W±BCenter J/B
6
IG1 IG112
W WW±B W±B
*1: LHD
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1033
AVENSIS REPAIR MANUAL (RM1018E)
KICK DOWN SWITCH CIRCUIT
CIRCUIT DESCRIPTION
The kick±down switch is turned ON when the accelerator pedal is depressed to the full throttle and sends
signals to ECM.
When the kick±down switch is turned ON, the ECM controls gear shifting 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
05C8O±01

H42584
KD
D02350
05±1034± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT TERMINAL VOLTAGE
(a) Turn the ignition switch ON.
(b) Measure voltage between terminal KD of ECM and body
ground when accelerator pedal is fully depressed or not.
OK:
Accelerator pedalVoltage
Fully depressed
(Kick±down switch is ON)Below 1 V
Released
(Kick±down switch is OFF)10 to 14 V
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
NG
2 INSPECT KICK DOWN SWITCH
(a) Disconnect the kick±down switch connector.
(b) Check continuity between terminals of the kick±down
switch connector when kick±down switch is ON and OFF.
OK:
Kick±down switchContinuity
ONContinuity
OFFNo continuity
NG REPLACE KICK DOWN SWITCH
OK
3 CHECK HARNESS AND CONNECTOR
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
CHECK AND REPLACE ECM

050TJ±13
05±1094
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If malfunction code is displayed during the DTC check (sensor check), ch\
eck the circuit listed for the code
in the table below (Proceed to the page given for that circuit).
DTC No.
(See Page)Detection ItemTrouble AreaMemory
00Normal±±
11 *1
(05±1102)
Room temperature sensor circuit
(open/short)
Cooler thermistor (room temp. sensor)

Harness or connector between cooler thermistor (room
temp. sensor) and A/C amplifier assy

A/C amplifier assy

(8.5 min. or more)
12 *2
Ambient temperature sensor circuit
(open/short)
Thermistor assy (ambient temp. sensor)

Harness or connector between thermistor assy (ambient
temp. sensor) and combination meter

Combination meter12
(05±1106)
Combination meter

Harness or connector between combination meter and A/C
amplifier assy

A/C amplifier assy
(8.5 min. or more)
13
(05±1109)
Evaporator temperature sensor circuit
(open/short)
Cooler thermistor No.1 (evaporator temp. sensor)

Harness or connector between cooler thermistor No.1
(evaporator temp. sensor) and A/C amplifier assy

A/C amplifier assy

(8.5 min. or more)
21 *3
Solar sensor circuit (open) (Passenger
side)
Automatic light control sensor (solar sensor)

Harness or connector between automatic light control sen-
( l ) d A/C lifi

(8.5 min. or more)
21
(05±1113)
Solar sensor circuit (short) (Passenger
side)sor (solar sensor) and A/C amplifier assy

A/C amplifier assy
±
23
(05±1116)
Pressure sensor circuit
A/C tube assy (pressure sensor)

Harness or connector between A/C tube assy (pressure
sensor) and A/C amplifier assy

A/C amplifier assy
±
24 *3
Solar sensor circuit (open)
(Driver side)
Automatic light control sensor (solar sensor)

Harness or connector between automatic light control sen-
( l ) d A/C lifi

(8.5 min. or more)
24
(05±1119)
Solar sensor circuit (short)
(Driver side)sor (solar sensor) and A/C amplifier assy

A/C amplifier assy
±
31
(05±1122)
Air mix damper position sensor circuit
(Passenger side)
Air mix damper servo sub±assy (air mix damper position
sensor)

Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy

A/C amplifier assy

(1 min. or more)
33
(05±1126)
Air outlet damper position sensor circuit
Mode damper servo sub±assy (mode damper position sen-
sor)

Harness or connector between mode damper servo sub±
assy (mode damper position sensor) and A/C amplifier assy

A/C amplifier assy

(1 min. or more)
36
(05±1129)
Air mix damper position sensor circuit
(Driver side)
Air mix damper servo sub±assy (Air mix damper position
sensor)

Harness or connector between air mix damper servo sub±
assy (air mix damper position sensor) and A/C amplifier
assy

A/C amplifier assy

(1 min. or more)
41
(05±1133)
Air mix damper control servomotor
(Passenger side)
Air mix damper servo sub±assy (air mix damper control)

Harness or connector between air mix damper servo sub±
assy (air mix damper control) and A/C amplifier assy

A/C amplifier assy

(15 sec.)