TOYOTA AVENSIS 2005 Service Repair Manual

±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±881
AVENSIS REPAIR MANUAL (RM1018E)
Chapter 3: Off±vehicle Repair
(
: U241E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM840U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward range or reverse range
1. Front and rear planetary gear
2. U/D planetary gear
3. U/D one±way clutch (F
2)
4. Forward clutch (C
1)
5. U/D brake (B
3)










Vehicle does not move in R range
1. Front and rear planetary gear unit
2. U/D planetary gear
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. 1st & reverse brake (B
2)










No up±shift (1st
2nd)1. No.1 one±way clutch (F1)
2. 2nd brake (B
1)




No up±shift (2nd
3rd)Direct clutch (C2)

No up±shift (3rd
O/D)U/D clutch (C3)

No lock±up or No lock±up offTorque converter clutch40±37
Harsh engagement (N
D)
1. Forward clutch (C1)
2. U/D one±way clutch (F
2)
3. No.1 one±way clutch (F
1)






Harsh engagement (N
R)1. Direct clutch (C2)
2. 1st & reverse brake (B
2)




Harsh engagement (Lock±up)Torque converter clutch40±37
Slip or shudder (Forward position: After warm±up)
1. Torque converter clutch
2. Forward clutch (C
1)
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. No.1 one±way clutch (F
1)
6. U/D one±way clutch (F
2)
40±37









Slip or shudder (R range)1. Direct clutch (C2)
2. 1st & reverse brake (B
2)




Slip or shudder (1st)No.1 one±way clutch (F1)

Slip or shudder (2nd)1. U/D one±way clutch (F2)
2. 2nd brake (B
1)




Slip or shudder (3rd)Direct clutch (C2)

Slip or shudder (O/D)U/D clutch (C3)

No engine braking (1st ± 3rd: D range)U/D brake (B3)

Poor acceleration (All range)1. Torque converter clutch
2. U/D planetary gear40±37

Poor acceleration (O/D)1. U/D clutch (C3)
2. U/D planetary gear



Large shift shock or engine stalls when starting off or stoppingTorque converter clutch40±37

05C8S±01
C95801
E13 E12 E10 E9
05±878± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECM
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
SLT+ (E13±17) ±
SLT± (E13±16)P±L ± PIG switch ON10 to 14
THO (E13±30) ± E2 (E13±28)V ± BRIG switch ON and ATF temperature 110
C (230
F)Below 1
DSL (E12 11) E1 (E12 7)LB BRIG switch ONBelow 1DSL (E12±11) ± E1 (E12±7)L±B ± BRVehicle driving under lock±up range10 to 14
IG switch ONBelow 1
S4 (E12±13) ± E1 (E12±7)L ± BRO/D gear10 to 14()()
Except O/D gearBelow 1
SL2+ (E12 17)IG switch ONBelow 1SL2+ (E12±17) ±
SL2 (E12 16)R ± R±B1st or 2nd gear10 to 14SL2± (E12±16)3rd or O/D gearBelow 1
SL1+ (E12 19)IG switch ON10 to 14SL1+ (E12±19) ±
SL1 (E12 18)Y ± Y±B1st gear10 to 14SL1± (E12±18)Except 1st gearBelow 1
NC+ (E12±26) ± NC± (E12±34)LG ± LG±BEngine is runningBelow 1 and 4 to 5
NT+ (E12±27) ± NT± (E12±35)B±O ± BEngine is runningBelow 1 and 4 to 5
D (E10 10) E1 (E12 7)LG B BRIG switch ON Shift lever D range10 to 14D (E10±10) ± E1 (E12±7)LG±B ± BRIG switch ON Shift lever other than D rangeBelow 1
R (E10 11) E1 (E12 7)RY BRIG switch ON Shift lever R range10 to 14R (E10±11) ± E1 (E12±7)R±Y ± BRIG switch ON Shift lever other than R rangeBelow 1
SPD (E10±17) ± E1 (E12±7)V±W ± BRIG switch ON4.5 to 5.5
SPT1 (E10 20) E1 (E12 7)LBRIG switch ON and shift lever S position7.5 to 14SPT1 (E10±20) ± E1 (E12±7)L ± BRIG switch ON and shift lever except for S positionBelow 1
SFTD (E9 21) E1 (E12 7)BBRIG switch ON and shift lever S position7.5 to 14SFTD (E9±21) ± E1 (E12±7)B ± BRIG switch ON and shift lever º±º position (Down shift)Below 1.5
SFTU (E9 22) E1 (E12 7)RBRIG switch ON and shift lever S position7.5 to 14SFTU (E9±22) ± E1 (E12±7)R ± BRIG switch ON and shift lever º+º position (Up shift)Below 1.5
KD*1(E9 27) E1 (E12 7)WBRIG switch ON and kick±down switch ONBelow 1KD*1 (E9±27) ± E1 (E12±7)W ± BRIG switch ON and kick±down switch OFF10 to 14
*1: Europe

0567R±11
D30682
Combination Meter
(MIL)
Europe spec: Stop Lamp
Switch Assy
Shift Lock Control Unit
(Transmission Control Switch)
Shift Solenoid Valve SLT
Shift Solenoid Valve SL1ECM
DLC3
Park/neutral Position
Switch Assy
Shift Solenoid Valve SL2
Shift Solenoid Valve DSLShift Solenoid
Valve S4
Transmission Wire
(ATF Temperature Sensor) Speed Sensor (NT)
Speed Sensor (NC)
Kick±down Switch
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±877
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

0567Q±08
05±876±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed in th\
e table below and proceed to the
page given.
*
1 : ± ... MIL does not light /
... MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *Memory
P0500/42 (05±240)Vehicle Speed Sensor ºAº
 Combination meter
 Open or short in vehicle speed sensor circuit
 Vehicle speed sensor
 ECM


P0710/38
(05±882)Transmission Fluid Temperature
Sensor ºAº Circuit

P0712/38(05±882)Transmission Fluid Temperature
Sensor ºAº Circuit Low Input Open or short in ATF temperature sensor circuit
 ATF temperature sensor

ECM


P0713/38
(05±882)Transmission Fluid Temperature
Sensor ºAº Circuit High Input
ECM


P0717/37(05±884)Turbine Speed Sensor Circuit No
Signal
 Open or short in speed sensor (NT) circuit
 Speed sensor (NT)
 ECM
 Automatic transaxle assembly


P0748/62
(05±886)Pressure Control Solenoid ºAº
Electrical
(Shift Solenoid Valve SL1) Open or short in shift solenoid valve SL1 circuit
 Shift solenoid valve SL1
 ECM


P0778/63
(05±886)Pressure Control Solenoid ºBº
Electrical
(Shift Solenoid Valve SL2) Open or short in shift solenoid valve SL2 circuit
 Shift solenoid valve SL2
 ECM


P0793/67
(05±892)Intermediate Shaft Speed Sen-
sor ºAº Open or short in speed sensor (NC) circuit
 Speed sensor (NC)
 ECM


P0982/65
(05±886)Shift Solenoid ºDº Control Circuit
Low (Shift Solenoid Valve S4) Open or short in shift solenoid valve S4 circuit
Shift l id l S4


P0983/65
(05±886)Shift Solenoid ºDº Control Circuit
High (Shift Solenoid Valve S4) Shift solenoid valve S4
 ECM


P2716/77
(05±894)Pressure Contorl Solenoid ºDº
Electrical
(Shift Solenoid Valve SLT) Open or short in shift solenoid valve SLT circuit
 Shift solenoid valve SLT
 ECM
±
P2769/64
(05±897)Torque Converter Clutch Sole-
noid Circuit Low
(Shift Solenoid Valve DSL)
 Open or short in shift solenoid valve DSL circuit
Shift l id l DSL
±
P2770/64
(05±897)Torque Converter Clutch Sole-
noid Circuit High
(Shift Solenoid Valve DSL) Shift solenoid valve DSL
 ECM
±

05C8R±02
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±863
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD
(1)When troubleshooting Euro±OBD vehicles, theonly difference from the usual troubleshooting pro-
cedure is that you connect the vehicle to the OBD
scan tool complying with ISO 15031±4 or hand±
held tester, and read off various data output from
the vehicle's ECM.
(2)Euro±OBD regulations require that the vehicle's on±board computer illuminates the Check Engine
Warning Light (Malfunction Indicator Lamp)/CHK
ENG (MIL) on the instrument panel when the com-
puter detects a malfunction in the emission control
system/components or in the driving system com-
ponents which affect vehicle emissions, or a mal-
function in the computer. In addition to CHK ENG
(MIL) illuminating when a malfunction is detected,
the applicable Diagnostic Trouble Codes (DTCs)
prescribed by ISO15031±6 are recorded in the
ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory. (3)To check the DTCs, connect the OBD scan tool orhand±held tester to the Data Link Connector 3
(DLC3) on the vehicle. The OBD scan tool or hand±
held tester also enables you to erase the DTCs and
check freezed frame data and various forms of en-
gine data (For operating instructions, see the OBD
scan tool's instruction book.).
(4)DTCs include ISO controlled codes and manufac- turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±876).
(5) The diagnosis system operates in normal mode during normal vehicle use. It also has a check mode
for technicians to simulate malfunction symptoms
and troubleshoot. Most DTCs use 2 trip detection
logic (*) to prevent erroneous detection, and ensure
thorough malfunction detection. By switching the
ECM to check mode when troubleshooting, techni-
cians can cause the CHK ENG (MIL) to light up for
a malfunction that is only detected once or momen-
tarily (Hand±held tester only) (See step 2).

05±864± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
(6) *2 trip detection logic:
When a malfunction is first detected, the malfunc-
tion code is temporarily stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG (MIL) to illumenate (2nd trip)
(However, the ignition switch must be turned OFF
between the 1st trip and the 2nd trip.).
(b) Description M±OBD
(1) When troubleshooting Multiplex (M±OBD) vehicles,
the only difference from the usual troubleshooting
procedure is that you connect the hand±held tester
to the vehicle, and read off various data output from
the vehicle's ECM.
(2) The vehicle's on±board computer illuminates the
MIL on the instrument panel when the computer de-
tects a malfunction in the computer itself or in driv-
ing system components. In addition to the MIL illu-
minating when a malfunction is detected, the
applicable DTCs are recorded in the ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory.
(3) To check the DTCs, connect the hand±held tester
to DLC3 on the vehicle or read the number of blinks
of the MIL when TC and CG terminals on the DLC3
are connected. The hand±held tester also enables
you to erase the DTCs and activate the several ac-
tuators and check freeze frame data and various
forms of engine data (For instruction book).
(4) The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
(test) mode for technicians to simulate malfunction
symptoms and perform troubleshooting. Most
DTCs use 2±trip detection logic (*) to prevent erro-
neous detection and ensure thorough malfunction
detection. By switching the ECM to check (test)
mode using the hand±held tester when trouble-
shooting, the technician can cause the MIL to illumi-
nate for a malfunction that is only detected once or
momentarily.
*2±trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the
2nd test drive, this 2nd detection causes the MIL to
illuminate.

D25148
DLC3 12345 768
9 1 0111 21 3 1 514 16
FI2547
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±865
AVENSIS REPAIR MANUAL (RM1018E)
(c) Inspect the DLC3.
(1) The vehicle's ECM uses the ISO 9141±2 (Euro±
OBD)/ISO 14230 (M±OBD) communication proto-
col. The terminal arrangement of DLC3 complies
with ISO 15031±3 and matches the ISO
9141±2/ISO 14230 format.
Terminal No.ConnectionVoltage or ResistanceCondition
7Bus
LinePulse generationDuring communication
4Chassis Ground
Body Ground / 1
or lessAlways
16Battery Positive
Body Ground / 9 ± 14 VAlways
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of hand±held tester to
DLC3, turned the ignition switch ON and operated the hand±
held tester, there is a problem on the vehicle side or tool side.

If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.

If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not come on, troubleshoot the combination me-
ter.
(2) When the engine is started, the MIL should go off.
If the light remains on, the diagnosis system has de-
tected a malfunction or abnormality in the system.
(b) Check the DTC, using the hand±held tester.
NOTICE:
Hand±held tester only:
When the diagnostic system is switched from normal mode
to check (test) mode, it erases all DTCs and freeze frame
data recorded in normal mode. So before switching modes,
always check the DTCs and freeze frame data, and note
them down.

D25148
CGTC
DLC3
123457
68
91011121315 1416
AT0716
ON
OFF
0.26 Seconds
Normal Code0.26 Seconds
AT0713
0.52 Seconds
ON
OFF
For Next Code
Repeat
2.5 Seconds
4.0 Seconds1.5 Seconds4.5 Seconds
Malfunction Code º42º
05±866
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
(1)Use the hand±held tester to check the DTCs and instructions, see the hand±held tester instruction
book.
(2)See page 05±876 to confirm the details of the DTCs.
(c) Check the DTC (Not using the hand±held tester). (1) Turn the ignition switch ON, but do not start the en-
gine.
(2) Using SST, connect terminals 13 (TC) and 4 (CG) of DLC3.
SST 09843±18040
(3) Read the DTC indicated by the number of times of the MIL blinks.
HINT:
If the system is operating normally, the light will blink 2 times per
second.
(4) The malfunction code is indicated, as shown in thechart on the left (DTC º42º is shown as an example).
HINT:
When 2 or more malfunction codes are stored in memory, the
lower±numbered code is displayed first.

BR3904
ON
OFF0.13 sec.
0.13 sec.
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±867
AVENSIS REPAIR MANUAL (RM1018E)
3. INSPECT DIAGNOSIS (CHECK MODE)
HINT:
Hand±held tester only:
Compared to the normal mode, the check mode has high sens-
ing ability to detect malfunctions.
Furthermore, the same diagnostic items which are detected in
Normal mode can also be detected in Check mode.
(a) Check the DTC.
(1) Check the initial conditions.

Battery voltage 11 V or more

Throttle valve fully closed

Shift lever in P range

Air conditioning switched OFF
(2) Turn the ignition switch OFF.
(3) Prepare the hand±held tester.
(4) Connect the hand±held tester to DLC3.
(5) Turn the ignition switch ON and switch the hand±
held tester ON.
(6) Switch the hand±held tester from Normal mode to
Check mode (Check that the MIL flashes).
(7) Start the engine (MIL goes out after the engine
starts).
(8) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc.
(9) After simulating the malfunction conditions, use the
hand±held tester diagnosis selector to check the
DTCs and freeze frame data, etc.
HINT:
Take care not to turn the ignition switch OFF, as turning it off
switches the diagnosis system from Check mode to Normal
mode, which all DTCs etc. are erased.
(10) After checking the DTC, inspect the applicable cir-
cuit.
(b) Clear the DTC.
(1) When using hand±held tester:
The following operation will erase the DTC and
freeze frame data. Operate a hand±held tester to
erase the codes.
(2) When not using the hand±held tester:
Remove the EFI fuse from engine room J/B for 10
seconds or more.

05±868± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
4. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
of the methods to shorten the work time.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the hand±held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
STOP LIGHT SWStop light SW Status/
ON or OFF
Brake Pedal is depressed: ON

Brake Pedal is released: OFF

SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th (O/D)Shift lever Range is;

D: 1st, 2nd, 3rd or 4th (O/D)

SPD (NC)Counter Gear Speed
display: 50 r/minD Range is warmed up,4th (O/D);
Same as input shaft speed

LOCK UP SOLLock Up Solenoid Status/
ON or OFF
Lock Up: ON

Except Lock Up: OFF

KICKDOWN SWKick down SW Status/
ON or OFF

Accelerator Pedal is depressed:
ON

Accelerator Pedal is released:
OFF


PNP SW [NSW]PNP SW Status/
ON or OFFShift lever range is;
P or N: ON
Except P or N: OFF
The shift lever range and these
REVERSEPNP SW Status/
ON or OFFShift lever range is;
R: ON
Except R: OFFThe shift lever range and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
DRIVEPNP SW Status/
ON or OFFShift lever range is;
D and 3: ON
Except D and 3: OFFcable adjustment.
SOLENOID (SLT)Shift Solenoid SLT Status/
ON or OFFIG SW ON: ON

AT FLUID TEMP
ATF Temp. Sensor Value/
min.: ±40C (±40F)
max.: 215C (419F)80C (176F)
(After Stall Test)If the value is º±40C (±40F)º or
º215C (419F)º, ATF temp. sen-
sor circuit is opened or shorted.