Toyota Corolla (2004+). Manual - part 46

 

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Toyota Corolla (2004+). Manual - part 46

 

 

05-400
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
ON malfunction (F)
4th gear ratio x NO + 50 rpm
or
Engine speed
< 4th gear ratio x NO - 50 rpm
NO: Transmission output speed
ON malfunction (G)
< 3rd gear ratio x NO + 50 rpm
and
Engine speed
3rd gear ratio x NO - 50 rpm
NO: Transmission output speed
ON malfunction (H)
4th gear ratio x NO + 50 rpm
or
Engine speed
< 4th gear ratio x NO - 50 rpm
NO: Transmission output speed
ON malfunction (I)
When one of following secondary parameter conditions met,
(See secondary parameters and condition)
2nd judgment is stopped.
INSPECTION PROCEDURE
1
INSPECT SHIFT SOLENOID VALVE(S2)
(a) Remove the shift solenoid valve S2.
Shift Solenoid Valve S2:
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
Solenoid Connector (S2) - Solenoid
11 to 15 W
Body (S2)
(c)
Connect the positive (+) battery lead to the solenoid con-
nector terminal, and the negative (-) battery lead to the
solenoid body for checking the solenoid valve operation.
Standard:
The solenoid makes an operating noise.
(+)
(-)
G27630
NG REPLACE SHIFT SOLENOID VALVE(S2)
OK
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-401
TRANSAXLE [ECT] (April, 2003)
2
INSPECT TRANSMISSION VALVE BODY ASSY(See chapter 2 in the problem
symptoms table)
(See page 05-374)
NG REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY (See page 40-23)
OK
REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSY (See page 40-7)
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
05-409
TRANSAXLE [ECT] (April, 2003)
05C19-05
DTC
P2716
PRESSURE CONTROL SOLENOID ”D”
ELECTRICAL (SHIFT SOLENOID SLT)
CIRCUIT DESCRIPTION
The throttle pressure that is applied to the primary regulator
valve (which modulates the line pressure) causes the solenoid
Line Pressure
valve SLT, under electronic control, to precisely and minutely
Control Pressure
modulate and generate the line pressure according the extent
of the accelerator pedal depressed or the output of engine pow-
er.
This controls the line pressure and provides smooth shifting.
D02290
Current Flow to Solenoid
Upon receiving a signal of the throttle valve opening angle, the
ECM controls the line pressure by sending a predetermined (*)
duty ratio to the solenoid valve, modulating the line pressure
and generating throttle pressure.
ON
(*): Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B
OFF
is the period of non-continuity, then
1 cycle
Duty Ratio=A/(A+B) x 100 (%)
BE4056
DTC No.
DTC Detection Condition
Trouble Area
Condition (a) or (b) below is detected 1 sec. or more:
F Open or short in shift solenoid valve SLT circuit
(1-trip detection logic)
P2716
F Shift solenoid valve SLT
(a) SLT- terminal: 0V
F ECM
(b) SLT- terminal: 12V
MONITOR DESCRIPTION
The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation
based on signals from the throttle position sensor and the vehicle speed sensor. The ECM adjusts the duty
cycle of the SLT solenoid valve to control hydraulic line pressure coming from the primary regulator valve.
Appropriate line pressure assures smooth shifting with varying engine outputs. When an open or short in
the linear solenoid valve (SLT) circuit is detected, the ECM interprets this as a fault. The ECM will turn ON
the MIL.
MONITOR STRATEGY
Related DTCs
P2716
Pressure control solenoid ”D”/Range check
Required sensors/Components
Shift solenoid valve SLT
Frequency of operation
Continuous
Duration
1 sec.
MIL operation
Immediate
Sequence of operation
None
05-410
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
TYPICAL ENABLING CONDITION
Specification
Item
Minimum
Maximum
The monitor will run whenever the follow-
See page 05-369
ing DTCs are not present.
Solenoid current shout OFF
Not shut OFF
Battery voltage
11 V or more
-
CPU commanded duty ratio
19 % or more
-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
Diagnostic signal from MIC
Fail
COMPONENT OPERATING RANGE
Parameter
Standard value
Shift solenoid valve SLT resistance
5.0 to 5.6 W at 20_C (68_F)
WIRING DIAGRAM
ECM
E1
ECT Solenoid
17
G
R-W
E3
SLT+
SLT+
1
16
GR
P
E3
SLT-
SLT-
4
D26542
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
05-411
TRANSAXLE [ECT] (April, 2003)
INSPECTION PROCEDURE
1
INSPECT TRANSMISSION WIRE(SLT)
Transmission Wire Side:
(a) Disconnect the transmission wire connector from the
(Connector Front View):
transaxle.
SLT+
(b) Measure the resistance according to the value(s) in the
table below.
3
2
1
E1
Standard:
6
4
5
Specified Condition
Tester Connection
20 _C (68 _F)
1 (SLT+) - 4 (SLT-)
5.0 to 5.6 W
SLT-
D25254
(c)
Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester Connection
Specified Condition
1 (SLT+) - Body ground
10 kW or higher
4 (SLT-) - Body ground
NG Go to step 3
OK
2
CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE - ECM)
(a) Connect the transmission wire connector to the transaxle.
E3
E4
E5
E6
(b) Disconnect the ECM connector.
(c)
Measure the resistance according to the value(s) in the
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
E3 - 17 (SLT+) - E3 - 16 (SLT-)
5.0 to 5.6 W
ECM:
SLT+
SLT-
(d) Measure the resistance according to the value(s) in the
C95813
table below.
Standard (Check for short):
Tester Connection
Specified Condition
E3 - 17 (SLT+) - Body ground
10 kW or higher
E3 - 16 (SLT-) - Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (See page 01-30)
OK
REPLACE ECM (See page 10-11)
05-412
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
3
INSPECT SHIFT SOLENOID VALVE(SLT)
(a) Remove the shift solenoid valve (SLT).
Shift Solenoid Valve SLT:
(b) Measure the resistance according to the value(s) in the
1
2
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
1 - 2
5.0 to 5.6 W
(c)
Connect the positive (+) battery lead with a 21 W bulb to
the terminal 2 of the solenoid valve connector and the
negative (-) battery lead to the terminal 1 of the solenoid
1
2
valve connector for checking the solenoid valve opera-
tion.
Standard:
The solenoid makes an operating noise.
(-)
(+)
D25466
NG REPLACE SHIFT SOLENOID VALVE(SLT)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (See page 40-27)
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-413
TRANSAXLE [ECT] (April, 2003)
0527R-15
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.
Fail safe function:
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.
DTC No.
DTC Detection Condition
Trouble Area
F Short in shift solenoid valve SL circuit
ECM detects short in solenoid valve SL circuit 4 times when
P2769
F Shift solenoid valve SL
solenoid valve SL is operated (2-trip detection logic)
F ECM
F Open in shift solenoid valve SL circuit
ECM detects open in solenoid valve SL circuit 4 times when
P2770
F Shift solenoid valve SL
solenoid valve SL is not operated (2-trip detection logic)
F 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 SL Solenoid Valve to regulate the hydraulic pressure and provide smooth-
er 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 SL, it will illuminate the MIL.
MONITOR STRATEGY
Torque converter clutch solenoid/Range check
P2769
(Low resistance)
Related DTCs
Torque converter clutch solenoid/Range check
P2770
(High resistance)
Required sensors/Components
Shift solenoid valve SL
Frequency of operation
Continuous
Duration
0.064 sec.
MIL operation
2 driving cycles
Sequence of operation
None
TYPICAL ENABLING CONDITION
Specification
Item
Minimum
Maximum
The monitor will run whenever the follow-
See page 05-369
ing DTCs are not present.
Range check (Low resistance)
Solenoid
ON
Time after solenoid OFF to ON
More than 0.008 sec.
-
Range check (High resistance)
Solenoid
OFF
Time after solenoid ON to OFF
More than 0.008 sec.
-
05-414
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
Range check (Low resistance)
Number of solenoid ON/OFF change with intelligent power
MOS diagnosis signal failure
4 times (0.064 sec.)
(Fail at solenoid resistance
8 W)
Range check (High resistance)
Number of solenoid ON/OFF change with intelligent power
MOS diagnosis signal failure
4 times (0.064 sec.)
(Fail at solenoid resistance
100 kW)
COMPONENT OPERATING RANGE
Parameter
Standard value
Shift solenoid valve SL resistance
11 to 15 W at 20_C (68_F)
WIRING DIAGRAM
ECM
E1
ECT Solenoid
13
Y
L-W
E4
SL
SL
2
D26539
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
05-415
TRANSAXLE [ECT] (April, 2003)
INSPECTION PROCEDURE
1
INSPECT TRANSMISSION WIRE(SL)
Transmission Wire Side:
(a) Disconnect the transmission wire connector from the
(Connector Front View):
SL
transaxle.
(b) Measure the resistance according to the value(s) in the
table below.
3
2
1
E1
Standard:
6
4
5
Specified Condition
Tester Connection
20 _C (68 _F)
2 - Body ground
11 to 15 W
D25254
NG Go to step 3
OK
2
CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE - ECM)
(a) Connect the transmission wire connector.
E3
E4
E5
E6
(b) Disconnect the ECM connector.
(c)
Measure the resistance according to the value(s) in the
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
ECM:
E4 - 13 (SL) - Body ground
11 to 15 W
SL
C95812
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (See page 01-30)
OK
REPLACE ECM (See page 10-11)
05-416
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
3
INSPECT SHIFT SOLENOID VALVE(SL)
(a) Remove the shift solenoid valve SL.
Shift Solenoid Valve SL:
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
Solenoid Connector (SL) - Solenoid
11 to 15 W
Body (SL)
(c)
Connect the positive (+) battery lead to the solenoid con-
nector terminal, and the negative (-) battery lead to the
solenoid body for checking the solenoid valve operation.
Standard:
The solenoid valve makes an operating noise.
(+)
(-)
G27628
NG REPLACE SHIFT SOLENOID VALVE(SL)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (See page 40-27)
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
05-367
TRANSAXLE [ECT] (April, 2003)
05DU0-01
PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
Part and system name
Definition
Toyota HCAC system, Hydrocarbon adsorptive Catalyst
HC adsorptive three-way catalytic converter
(HCAC) system, HC adsorptive three-way catalyst
Variable Valve Timing sensor, VVT sensor
Camshaft position sensor
Variable valve timing system, VVT system
Camshaft timing control system
Camshaft timing oil control valve, Oil control valve OCV,
Camshaft timing oil control valve
VVT, VSV
Variable timing and lift, VVTL
Camshaft timing and lift control
Crankshaft position sensor ”A”
Crankshaft position sensor
Engine speed sensor
Crankshaft position sensor
THA
Intake air temperature
Knock control module
Engine knock control module
Knock sensor
Engine knock sensor
Mass or volume air flow circuit
Mass air flow sensor circuit
Vacuum sensor
Manifold air pressure sensor
Internal control module, Control module, Engine control
Power train control module
ECU, PCM
FC idle
Deceleration fuel cut
Idle air control valve
Idle speed control
VSV for CCV, Canister close valve VSV for canister control
Evaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
Evaporative emissions canister purge valve
EVAP VAV, Purge VSV
VSV for pressure switching valve, Bypass VSV
Evaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
Fuel tank pressure sensor
emission control system pressure sensor
Charcoal canister
Evaporative emissions canister
ORVR system
On-boad refueling vapor recovery system
Intake manifold runner control
Intake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)
Intake manifold tuning valve
Intake control VSV
Intake manifold tuning solenoid valve
AFS
Air fuel ratio sensor
O2 sensor
Heater oxygen sensor
Oxygen sensor pumping current circuit
Oxygen sensor output signal
Oxygen sensor reference ground circuit
Oxygen sensor signal ground
Accel position sensor
Accelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
Electronic throttle actuator
tronic throttle motor, Throttle control motor
Electronic throttle control system, Throttle actuator control
Electronic throttle control system
system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor
Throttle position sensor/switch
Turbo press sensor
Turbocharger pressure sensor
Turbo VSV
Turbocharger pressure control solenoid valve
P/S pressure switch
Power-steering pressure switch
VSV for ACM
Active control engine mount
Speed sensor, Vehicle speed sensor ”A”, Speed sensor for
Vehicle speed sensor
skid control ECU
ATF temperature sensor, Trans. fluid temp. sensor, ATF
Transmission fluid temperature sensor
temperature sensor ”A”
Electronic controlled automatic transmission, ECT
Electronically controlled automatic
Intermediate shaft speed sensor ”A”
Couter gear speed sensor
05-368
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
Part and system name
Definition
Output speed sensor
Output shaft speed sensor
Input speed sensor, Input turbine speed sensor ”A”, Speed
Input turbine speed sensor
sensor (NT), Turbine speed sensor
PNP switch, NSW
Park/neutral position switch
Pressure control solenoid
Transmission pressure control solenoid
Shift solenoid
Transmission shift solenoid valve
Transmission control switch, Shift lock control unit
Shift lock control module
Engine immobilizer system, Immobilizer system
Vehicle anti-theft system
05-402
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
05C16-05
DTC
P0973
SHIFT SOLENOID ”A” CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE S1)
DTC
P0974
SHIFT SOLENOID ”A” CONTROL CIRCUIT
HIGH (SHIFT SOLENOID VALVE S1)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is performed in combination with ON and OFF of the shift solenoid valve S1 and S2
controlled by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the
remaining normal solenoid valve to allow the vehicle to be operated smoothly (Fail safe function).
Fail safe function:
If either of the solenoid valve circuits develops an open or short, the ECM turns the other solenoid valve ON
and OFF to shift to the gear positions shown in the table below. If both solenoids malfunction, hydraulic con-
trol cannot be performed electronically and must be done manually.
Manual shifting as shown in the above table must be done (In the case of a short circuit, the ECM stops send-
ing current to the short circuited solenoid).
S1 SOLENOID VALVE
S2 SOLENOID VALVE
BOTH SOLENOID
NORMAL
MALFUNCTIONING
MALFUNCTIONING
MALFUNCTIONING
Position
Solenoid valve
Solenoid valve
Solenoid valve
Gear when shift selector is
Gear
Gear
Gear
S1
S2
S1
S2
S1
S2
manually operated
ON
OFF
1st
X
ON
3rd
ON
X
1st
O/D
ON
ON
2nd
X
ON
3rd
OFF
X
O/D
O/D
D
OFF
ON
3rd
X
ON
3rd
OFF
X
O/D
O/D
OFF
OFF
O/D
X
OFF
O/D
OFF
X
O/D
O/D
ON
OFF
1st
X
ON
3rd
ON
X
1st
O/D
2
ON
ON
2nd
X
ON
3rd
OFF
X
3rd
O/D
OFF
ON
3rd
X
ON
3rd
OFF
X
3rd
O/D
ON
OFF
1st
X
OFF
1st
ON
X
1st
1st
L
ON
ON
2nd
X
ON
2nd
ON
X
1st
1st
X: Malfunctions
DTC No.
DTC Detection Condition
Trouble Area
F Short in shift solenoid valve S1 circuit
ECM detects short in solenoid valve S1 circuit 4 times when
P0973
F Shift solenoid valve S1
solenoid valve S1 is operated (1-detection logic)
F ECM
F Open in shift solenoid valve S1 circuit
ECM detects open in solenoid valve S1 circuit 4 times when
P0974
F Shift solenoid valve S1
solenoid valve S1 is not operated (1-detection logic)
F ECM
MONITOR DESCRIPTION
The ECM commands gearshift by turning the shift solenoid valves ”ON/OFF”. When there is an open or short
circuit in any shift solenoid valve circuit, the ECM detects the problem and the MIL comes on. Illuminating
the MIL, the ECM performs the fail-safe and turns the other shift solenoid valves in good condition ”ON/OFF”
(In case of an open or short circuit, the ECM stops sending current to the circuit.).
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-403
TRANSAXLE [ECT] (April, 2003)
MONITOR STRATEGY
P0973
Shift solenoid ”A”/Range check (Low resistance)
Related DTCs
P0974
Shift solenoid ”A”/Range check (High resistance)
Required sensors/Components
Shift solenoid valve S1
Frequency of operation
Continuous
Duration
2 times or more
MIL operation
Immediate
Sequence of operation
None
TYPICAL ENABLING CONDITION
Specification
Item
Minimum
Maximum
The monitor will run whenever the follow-
See page 05-369
ing DTCs are not present.
Range check (Low resistance)
Solenoid
ON
Time after solenoid OFF to ON
More than 0.008 sec.
-
Range check (High resistance)
Solenoid
OFF
Time after solenoid ON to OFF
More than 0.008 sec.
-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
Range check (Low resistance)
Number of solenoid ON/OFF change with intelligent power
MOS diagnosis signal failure
4 times (0.064 sec.)
(Fail at solenoid resistance
8 W)
Range check (High resistance)
Number of solenoid ON/OFF change with intelligent power
MOS diagnosis signal failure
4 times (0.064 sec.)
(Fail at solenoid resistance
100 kW)
COMPONENT OPERATING RANGE
Parameter
Standard value
Shift solenoid valve S1 resistance
11 to 15 W at 20_C (68_F)
05-404
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
WIRING DIAGRAM
E1
Electronically Controlled
Transmission Solenoid
ECM
Shift Solenoid
Valve No. 1
3
15
W
R-Y
E1
E4
S1
S1
Shift Solenoid
Valve No. 2
J/C
6
D
D
14
B
L
L
E1
J2
J2
E4
S2
S2
B
J3
L (*1)
To Cruise
Control ECU
*1: w/ Cruise control
C96092
INSPECTION PROCEDURE
1
INSPECT TRANSMISSION WIRE(S1)
Transmission Wire Side:
(a) Disconnect the transmission wire connector from the
(Connector Front View):
transaxle.
(b) Measure the resistance according to the value(s) in the
table below.
E1
3
2
1
Standard:
6
4
5
Specified Condition
Tester Connection
20 _C (68 _F)
S1
3 - Body ground
11 to 15 W
D25254
NG Go to step 3
OK

 

 

 

 

 

 

 

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