Page 2849 of 4770
Q07658
D00103BE3840D00995
w/ Engine Immobiliser System
w/o Engine Immobiliser SystemON
OD1
OD1 (+)
(±)
BE3840
I00143D00057
ON
OD (+) (±)
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±429
664 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD1 of ECM and body
ground.
OK:
Voltage: 9 ~ 14 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI±405).
NG
2 Check voltage between terminal OD of cruise control ECU harness side connec-
tor and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD of cruise control ECU
harness side connector and body ground.
OK:
Voltage: 9 ~ 14 V
OK Check and replace the cruise control ECU.
NG
Page 2850 of 4770
DI±430
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
665 Author: Date:
3 Check harness and connector between cruise control ECU and ECM.
NG Repair or replace the harness or connector.
OK
Check and replace the ECM.
Page 2851 of 4770
D01810
: w/ Engine Immobiliser System
: w/o Engine Immobiliser System
: O/D Main Switch
Contacts go open with switch pushed in
Contacts go closed with switch pushed once againInstrument
Panel J/BIgnition Switch
1B1
AM1
W
I16
7 1
22
1K2
AM1 IG1
B ± Y
O/D OFF
Indicator Light
(Combination Meter) R ± L
R ± LGAUGE
J4
Junction
Connector
DI164
2
1D 1K
D12
C8G ± OC
C8
W ± B C
CG ± O
G ± OJ6
Junction
ConnectorECM
5
*1B+
E77*2
E7OD2G ± O
IG311
O2 2
(*3)
O/D Main
Switch
O2
4
W ± B A
IF AJ5
Junction
Connector B ± R
1
FUSIBLE
LINK
BLOCKALT F9B ± R
2
F9
1
F4B ± GFL
MAIN
Battery
*3 *2 *1
1 Instrument
Panel J/B
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±431
666 Author: Date:
O/D Main Switch & O/D OFF Indictor Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go open when the switch is pushed in and go closed when it is pushed out.
In O/D main switch in OFF position, the O/D OFF indicator light lights up, and the ECM prohibits shifting over-
drive.
WIRING DIAGRAM
DI1J1±01
Page 2852 of 4770
Q07595
2
4
DI±432
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
667 Author: Date:
INSPECTION PROCEDURE
O/D OFF indicator light does not light up
1 Check O/D main switch.
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity at each terminal 2 and 4 of O/D main switch
connector.
OK:
O/D main switchSpecified condition
ONNo continuity
OFFContinuity
NG Replace the O/D main switch.
OK
2 Check and replace combination meter (See page BE±47).
NG Replace the combination meter.
OK
Page 2853 of 4770
Q07754Q07661BE3840D01716
ON
(+)
OD2
(±) w/ Engine Immobiliser System
w/o Engine Immobiliser System
OD2
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±433
668 Author: Date:
3 Check OVRDRIVE CUT SW2 signal.
When using TOYOTA hand±held tester:
PREPARATION:
(a) Remove the DLC3 cover.
(b) Connect TOYOTA hand±held tester to the DLC3.
(c) Turn the ignition switch ON and TOYOTA hand±held tes-
ter main switch ON.
CHECK:
Read the OVRDRIVE CUT SW2 signal on the TOYOTA hand±
held tester.
OK:
O/D main switch conditionOVRDRIVE CUT SW2 signal
O/D ON (Pushed in)OFF
O/D OFF (Pushed once again)ON
When not using TOYOTA hand±held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check voltage between terminal OD2 of ECM and body ground.
OK:
O/D main switch conditionVoltage
O/D ON (Pushed in)9 ~ 14
O/D OFF (Pushed once again)Below 1.5 V
OK Check and replace the ECM
(See page IN±31).
NG
Page 2854 of 4770
DI±434
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
669 Author: Date:
4 Check harness and connector between O/D OFF indicator light and ECM
(See page IN±31).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM
(See page IN±31).
Page 2855 of 4770
Q07595
2
4
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A140E)
DI±435
670 Author: Date:
O/D OFF indicator light remains ON
1 Check O/D main switch.
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity at each terminal 2 and 4 of O/D main switch
connector.
OK:
O/D main switchSpecified condition
ONNo continuity
OFFContinuity
NG Replace the O/D main switch.
OK
2 Check harness and connector between O/D OFF indicator light and O/D main
switch, O/D OFF indicator light and ECM (See page IN±31).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM
(See page IN±31).
Page 2856 of 4770

DI02C±02
Vehicle Brought to Workshop
Customer Problem Analysis
Check DTC and Freezes Frame Data (Pre±check)
Record or Print DTC and Freezed Frame Data P.
DI±438
Clear DTC and Freezed Frame Data P. DI±449
Visual Inspection
Setting the Check Mode Diagnosis P.
DI±438
1
Items insideare titles of pages in this manual, with the
page number indicated in the bottom portion. See the indicated
pages for detailed explanations.
Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
If the display shows ºUNABLE TO CONNECT TO VEHICLEº when you have connected the
scan tool / TOYOTA hand±held tester, inspect DLC3 P.
DI±438
2
3
4
5
6
symptom does not occur
Problem Symptom Confirmation8
7Symptom Simulation
P.
IN±21symptom occur
DTC CheckP. DI±438OK Code11Preliminary Check
P.
DI±438
DTC Chart
P. DI±449Mechanical System Test
P.
DI±438
Manual Shifting Test
P.
DI±438 OK
OK
Chapter 1
(Electronic)Chapter 2
(On±Vehicle)
P.
DI±453 OK
Chapter 3
(Off±Vehicle)OK Matrix Chart of Problem Symptoms ± P. DI±453
Circuit
InspectionMain Throttle Signal Check
Stop Light Signal Check
NG
Parts Inspection
NG
NGNG
Identification of ProblemRepairConfirmation TestEnd
NG
NG
12NG
13
14 15
16 17 9
10
P. DI±453P. DI±453
P. DI±484 to DI±487 P. DI±437 DI±436
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
671 Author: Date:
AUTOMATIC TRANSAXLE (A541E)
HOW TO PROCEED WITH TROUBLESHOOTING