2005 TOYOTA AVENSIS diagnostic

0567N±12
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±915
AVENSIS REPAIR MANUAL (RM1018E)
ELECTRONIC CONTROLLED AUTOMATIC TRANSAXLE
[ECT](U241E(1AZ±FSE))
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
The ECM of this system is connected to the multiplex communication system. \
Therefore, before starting trou-
bleshooting, make sure to check that there is no trouble in the multiplex communicat\
ion system.
1Vehicle Brought to Workshop
2Customer Problem Analysis (See page 05±919)
3 Connect the hand±held tester to DLC3
4Check and Clear DTC and Freeze Frame Data (See page 05±920)
5 Visual Inspection
6Setting the Check Mode Diagnosis (See page 05±920)
7 Problem Symptom Confirmation
Symptom does not occur: Go to step 8
Symptom occur: Go to step 9
8Symptom Simulation (See page 01±22)
9DTC Check (See page 05±920)
DTC is not output: Go to step 10
DTC is output: Go to step 17

05±916±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
1 0 Basic Inspection ( See page 40±2, 40±8 and 40±69 )
NG Go to step 19
OK
1 1 Mechanical System Test ( See page 05±920 )
NG Go to step 16
OK
1 2 Manual Shifting T est ( See page 05±920 )
NG Go to step 14
OK
1 3 Problem Symptoms T able Chapter 1 ( See page 05±935 )
NG Go to step 18
OK
1 4 Problem Symptoms T able Chapter 2 ( See page 05±935 )
NG Go to step 16
OK
1 5 Problem Symptoms T able Chapter 3 ( See page 05±935 )
NG
16 Part Inspection
Go to step 19
17 DTC Chart ( See page 05±931 )
1 8 Circuit Inspection ( See page 05±938)

± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±917
AVENSIS REPAIR MANUAL (RM1018E)
19 Identification of Problem
20 Repair
21 Confirmation Test
End

05±910± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
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.
05C93±01

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 SCT 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
21E9
E9
W±B
W±B
CG
R±W 1
5
DH
G±R
G±Y
W±B
B±G R±W
B±G
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±911
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

H42584SPT1 E1
H42584
SFTU
SFTD E1
H42585
SFTD (+)
E (±) SFTU (+)
05±912± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 CHECK ECM
(a) Turn the ignition switch to ON.
(b) Measure the voltage between terminals SPT1 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 LOCK.
(b) Disconnect the transmission control switch connector.
(c) Check the continuity between terminals E and that SFTU
as well as SFTD of the transmission control switch con-
nector.
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

H42586
SFTD
SFTU
SFTD
SFTU
E6
A
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±913
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 (E6±22) ± SFTU (A±2)Continuity
SFTD (E6±28) ± 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
SPT1
E1 (±)
E5
05±914± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
6 INSPECT SHIFT LOCK CONTROL UNIT ASSY(TRANSMISSION CONTROL
SWITCH)
(a) Turn the ignition switch to LOCK.
(b) Disconnect the transmission control switch connector.
(c) Check the continuity between terminal 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 terminal SPT1 and E1 of
the ECM connector.
OK:
Shift positionTester connectionSpecified condition
Except S positionSPT1 ± E1Below 1 V
S positionSPT1 ± E17.5 to 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
CHECK AND REPLACE ECM