Toyota Corolla (2004+). Manual - part 45
05-418
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
2
INSPECT TRANSMISSION CONTROL SWITCH
Switch Side:
(a) Measure the resistance according to the value(s) in the
(Connector Front View):
table below.
Standard:
Switch Condition
Tester Connection
Specified Condition
Press continuously trans-
mission
Below 1 W
A10
control switch
2 - 4
Release transmission
10 kW or higher
control switch
C90638
NG REPLACE TRANSMISSION CONTROL SWITCH
OK
3
CHECK HARNESS AND CONNECTOR(TRANSMISSION CONTROL SWITCH -
ECM)
(a) Connect the transmission control switch connector of shift
lever assy.
(b) Disconnect the ECM connector.
E3
E4
E5
E6
(c)
Measure the resistance according to the value(s) in the
table below.
Standard:
Switch Condition
Tester Connection
Specified Condition
Press continuously trans-
mission
Below 1 W
E5 - 29 (ODMS) -
control switch
ECM:
ODMS
Body ground
C95815
Release transmission
10 kW or higher
control switch
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (See page 01-30)
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-374)
05-386
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
05DU5-01
DTC
P0741
TORQUE CONVERTER CLUTCH SOLENOID
PERFORMANCE (SHIFT SOLENOID VALVE
SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, air-flow meter and crankshaft position sensor
to monitor the engagement condition of the lock-up clutch.
Then the ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the
ECM memory to detect mechanical trouble of the shift solenoid valve SL, valve body and torque converter
clutch or automatic transaxle (clutch, brake or gear etc.).
DTC No.
DTC Detecting Condition
Trouble Area
F Shift solenoid valve SL remains open or closed
F Lock-up does not occur when driving in the lock-up range
F Valve body is blocked
(normal driving at 80 km/h [50 mph]), or lock-up remains ON
F Shift solenoid valve SL
in the lock-up OFF range.
P0741
F Lock-up clutch
(2-trip detection logic)
F Torque converter clutch
F When lock-up is ON, clutch or brake slips or gear is broken.
F Automatic transaxle (clutch, brake or gear etc.)
(2-trip detection logic)
F ECM
MONITOR DESCRIPTION
Based on the signals from the throttle position sensor, the airflow meter and the crankshaft position sensor,
the ECM sends a signal to the shift solenoid valve SL 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 torque-converter lock-up and flexible lock-up functions.
The ECM compares the engine rpm (NE) signal and the input speed calculated by output speed sensor (out-
put speed) and gear ratio to detect torque converter lock-up. The ECM then compares the lock-up status
against the lock-up schedule in the ECM memory. If the ECM does not detect lock-up at the appropriate
time, it will conclude that there is a malfunction of shift solenoid SL. The ECM will illuminate the MIL.
MONITOR STRATEGY
Torque converter clutch solenoid (SL)/Rationality
check
Torque converter clutch solenoid (SL)/OFF mal-
Related DTCs
P0741
function
Torque converter clutch solenoid (SL)/ON mal-
function
Required sensors/Components
Torque converter clutch solenoid (SL)
Frequency of operation
Continuous
Duration
Less than 10 sec.
MIL operation
2 driving cycles
Sequence of operation
None
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-387
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.
OFF malfunction
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
4th with lock up
ON malfunction
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
4th
Throttle valve opening angle
7 % or more
-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
OFF malfunction
4th gear ratio x NO + 100 rpm
and
Engine speed
< 3rd gear ratio x NO - 100 rpm
NO: Transmission output speed
ON malfunction
Engine speed
4th gear ratio x NO - 50 rpm
It is necessary 2 judgments/driving cycle
and
1st judgment: temporary flag ON
< 4th gear ratio x NO + 50 rpm
2nd judgment: pending fault code ON
NO: Transmission output speed
05-388
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
INSPECTION PROCEDURE
1
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
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
3
INSPECT TORQUE CONVERTER CLUTCH ASSY (See page 40-20)
NG REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY (See page 40-7)
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-389
TRANSAXLE [ECT] (April, 2003)
05DU6-01
DTC
P0751
SHIFT SOLENOID ”A” PERFORMANCE
(SHIFT SOLENOID VALVE S1)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual
gear position (1st, 2nd, 3rd or O/D gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect the mechanical
trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).
DTC No.
DTC Detecting Condition
Trouble Area
F Shift solenoid valve S1 remains open or closed
During normal driving, the gear required by the ECM does not
F Valve body is blocked
P0751
match the actual gear
F Shift solenoid valve S1
(2-trip detection logic)
F Automatic transaxle (clutch, brake or gear etc.)
F ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position (1st, 2nd, 3rd or O/D gear position). When the gear position commanded by the ECM and the
actual gear position are not same, the ECM illuminates the MIL.
MONITOR STRATEGY
Shift solenoid ”A” (S1)/Rationality check
Related DTCs
P0751
Shift solenoid ”A” (S1)/OFF malfunction
Shift solenoid ”A” (S1)/ON malfunction
Required sensors/Components
Shift solenoid valve S1
Frequency of operation
Continuous
Duration
Less than 10 sec.
MIL operation
2 driving cycles
Sequence of operation
None
TYPICAL ENABLING CONDITIONS
Specification
Item
Minimum
Maximum
The monitor will run whenever the follow-
See page 05-369
ing DTCs are not present.
OFF malfunction (A)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
1st
Throttle valve opening angle
30 % or more
-
OFF malfunction (B)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
05-390
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Current ECM selected gear
2nd
Last ECM selected gear
1st
Throttle valve opening angle
7 % or more
-
Closing change of throttle valve opening
-5 % or more
Less than 5 %
angle
THlast - TH current
THlast: Throttle valve opening angle at
last ECM selected gear
-5 % or more
Less than 5 %
THcurrent: Throttle valve opening angle at
current ECM selected gear
OFF malfunction (C), (D) and (E)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
2nd
Throttle valve opening angle
7 % or more
Less than 60 %
OFF malfunction (F) and (G)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
3rd
Throttle valve opening angle
5 % or more
Less than 60 %
OFF malfunction (H) and (I)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-391
TRANSAXLE [ECT] (April, 2003)
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
4th
Throttle valve opening angle
5 % or more
Less than 60 %
OFF malfunction (J)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
ON
Braking
ON
65 % or more
Less than 5 %
(ECM selected gear 2nd)
(ECM selected gear 2nd)
65 % or more
Less than 3 %
Throttle valve opening angle
(ECM selected gear 3rd)
(ECM selected gear 3rd)
65 % or more
Less than 3 %
(ECM selected gear 4th)
(ECM selected gear 4th)
THcurrent - TH2ndstep
THcurrent: Throttle valve opening angle at
Less than -10 %
current ECM selected gear
or
TH2ndstep: Throttle valve opening angle
10 % or more
at 2nd judgment step
Less than -10 %
Closing change of throttle valve opening
or
angle
10 % or more
ON malfunction
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
4th
Throttle valve opening angle
12 % or more
Less than 35 %
05-392
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
OFF malfunction:
There are 2 judgment steps/driving cycle
1st judgment step: when following conditions met, temporary flag becomes ON.
OFF malfunction (A) or (B)
It is necessary 2 judgments/driving cycle
2nd judgment step: when following conditions met, pending fault code becomes ON.
(OFF malfunction (E) and (G) and (H)) or (OFF malfunction (C) and (D) and (F) and (I))
OFF malfunction (A)
< 2 x NO + 1,100 rpm
Engine speed (NE)
NO: Transmission output speed
OFF malfunction (B)
NElast - NEcurrent
< 512.5 rpm at throttle valve opening angle 40 %
NElast: Engine speed at last ECM selected gear
(condition vary with throttle valve opening angle)
NEcurrent: Engine speed at current ECM selected gear
OFF malfunction (C)
< 1st gear ratio x NO + 50 rpm
Engine speed (NE)
NO: Transmission output speed
OFF malfunction (D)
2nd gear ratio x NO + 50 rpm
or
Engine speed (NE)
< 2nd gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (E) and (F)
< 3rd gear ratio x NO + 50 rpm
and
Engine speed (NE)
3rd gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (G)
4th gear ratio x NO + 50 rpm
or
Engine speed (NE)
< 4th gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (H)
3rd gear ratio x NO + 50 rpm
or
Engine speed (NE)
< 3rd gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (I)
< 4th gear ratio x NO + 50 rpm
and
Engine speed (NE)
4th gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (J)
When one of following secondary parameter conditions met,
(See secondary parameters and condition)
2nd judgment is stopped.
ON malfunction:
2 x NO + 1,100 rpm
Engine speed (NE)
NO: Transmission output speed
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
05-393
TRANSAXLE [ECT] (April, 2003)
INSPECTION PROCEDURE
1
INSPECT SHIFT SOLENOID VALVE(S1)
(a) Remove the shift solenoid valve S1.
Shift Solenoid Valve S1:
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Specified Condition
Tester Connection
20 _C (68 _F)
Solenoid Connector (S1) - Solenoid
11 to 15 W
Body (S1)
(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.
(+)
(-)
G27629
NG REPLACE SHIFT SOLENOID VALVE(S1)
OK
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)
05-394
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
05DU7-01
DTC
P0756
SHIFT SOLENOID ”B” PERFORMANCE
(SHIFT SOLENOID VALVE S2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual
gear position (1st, 2nd, 3rd or O/D gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect the mechanical
trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).
DTC No.
DTC Detecting Condition
Trouble Area
F Shift solenoid valve S2 remains open or closed
During normal driving, the gear required by the ECM does not
F Valve body is blocked
P0756
match the actual gear
F Shift solenoid valve S2
(2-trip detection logic)
F Automatic transaxle (clutch, brake or gear etc.)
F ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position (1st, 2nd, 3rd or O/D gear position). When the gear position commanded by the ECM and the
actual gear position are not same, the ECM illuminates the MIL.
MONITOR STRATEGY
Shift solenoid ”B” (S2)/Rationality check
Related DTCs
P0756
Shift solenoid ”B” (S2)/OFF malfunction
Shift solenoid ”B” (S2)/ON malfunction
Required sensors/Components
Shift solenoid valve S2
Frequency of operation
Continuous
Duration
Less than 10 sec.
MIL operation
2 driving cycles
Sequence of operation
None
TYPICAL ENABLING CONDITIONS
Specification
Item
Minimum
Maximum
The monitor will run whenever the follow-
See page 05-369
ing DTCs are not present.
OFF malfunction (A)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
2nd
Throttle valve opening angle
10 % or more
Less than 35 %
OFF malfunction (B)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-395
TRANSAXLE [ECT] (April, 2003)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Current ECM selected gear
2nd
Last ECM selected gear
1st
Throttle valve opening angle
7 % or more
-
THlast - TH current
THlast: Throttle valve opening angle at
last ECM selected gear
-5 % or more
Less than 5 %
THcurrent: Throttle valve opening angle at
current ECM selected gear
OFF malfunction (C), (D) and (E)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
2nd
Throttle valve opening angle
7 % or more
Less than 60 %
OFF malfunction (F) and (G)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
3rd
Throttle valve opening angle
5 % or more
Less than 60 %
OFF malfunction (H)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
05-396
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
Braking
OFF
ECM selected gear
4th
Throttle valve opening angle
5 % or more
Less than 60 %
OFF malfunction (I)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
ON
Braking
ON
65 % or more
Less than 5 %
(ECM selected gear 2nd)
(ECM selected gear 2nd)
65 % or more
Less than 3 %
Throttle valve opening angle
(ECM selected gear 3rd)
(ECM selected gear 3rd)
65 % or more
Less than 3 %
(ECM selected gear 4th)
(ECM selected gear 4th)
THcurrent - TH2ndstep
THcurrent: Throttle valve opening angle at
Less than -10 %
current ECM selected gear
or
TH2ndstep: Throttle valve opening angle
10 % or more
at 2nd judgment step
Less than -10 %
Closing change of throttle valve opening
or
angle
10 % or more
ON malfunction (A)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
ECM selected gear
4th with lock up
ON malfunction (B)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Current ECM selected gear
2nd
Last ECM selected gear
1st
Throttle valve opening angle
7 % or more
-
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-397
TRANSAXLE [ECT] (April, 2003)
Closing change of throttle valve opening
-5 % or more
Less than 5 %
angle
THlast - TH current
THlast: Throttle valve opening angle at
last ECM selected gear
-5 % or more
Less than 5 %
THcurrent: Throttle valve opening angle at
current ECM selected gear
ON malfunction (C), (D) and (E)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
2nd
Throttle valve opening angle
7 % or more
Less than 60 %
ON malfunction (F)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
3rd
Throttle valve opening angle
5 % or more
Less than 60 %
ON malfunction (G) and (H)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
OFF
Braking
OFF
ECM selected gear
4th
Throttle valve opening angle
5 % or more
Less than 60 %
ON malfunction (I)
IAT (only for malfunction)
-10 _C (14 _F) or more
Less than 70 _C (158 _F)
ECT
55 _C (131 _F) or more
Less than 105 _C (221 _F)
Transmission shift position
”D”
Shift solenoid ”A” (S1) circuit
Not circuit malfunction
05-398
DIAGNOSTICS
- ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (April, 2003)
Shift solenoid ”B” (S2) circuit
Not circuit malfunction
Torque converter clutch solenoid (SL) cir-
Not circuit malfunction
cuit
Battery voltage
10 V or more
-
Spark retard by KCS control
0_ CA or more
-
Engine idling
ON
Braking
ON
65 % or more
Less than 5 %
(ECM selected gear 2nd)
(ECM selected gear 2nd)
65 % or more
Less than 3 %
Throttle valve opening angle
(ECM selected gear 3rd)
(ECM selected gear 3rd)
65 % or more
Less than 3 %
(ECM selected gear 4th)
(ECM selected gear 4th)
THcurrent - TH2ndstep
THcurrent: Throttle valve opening angle at
Less than -10 %
current ECM selected gear
or
TH2ndstep: Throttle valve opening angle
10 % or more
at 2nd judgment step
Less than -10 %
Closing change of throttle valve opening
or
angle
10 % or more
TYPICAL MALFUNCTION THRESHOLDS
Detection criteria
Threshold
OFF malfunction:
Following conditins met (1) or (2)
(1): OFF malfunction (A)
(2): OFF malfunction (B), (C), (D), (E), (F), (G), (H)
(1)
It is necessary 2 judgment/driving cycle
1st judgment: temporary flag ON
2nd judgment: pending fault code ON
OFF malfunction (A)
1st gear ratio x NO + 0 rpm
Engine speed
NO: Transmission output speed
(2)
There are 2 judgments steps/driving cycle
1st judgment step: when following conditions OFF malfunction (B) met, temporary flag becomes ON.
It is necessary 2 judgment/driving cycle
2nd judgment step: when following conditions met, pending fault code becomes ON.
(OFF malfunction (C), (F) and (H)) or (OFF malfunction (D), (E), (G) and (H))
OFF malfunction (B)
NElast - NEcurrent
< 512.5 rpm at throttle valve opening angle 40 %
NElast: Engine speed at last ECM selected gear
(Condition vary with throttle valve opening angle)
NEcurrent: Engine speed at current ECM selected gear
OFF malfunction (C)
1st gear ratio x NO + 50 rpm
Engine speed
NO: Transmission output speed
OFF malfunction (D)
2nd gear ratio x NO + 50 rpm
or
Engine speed
< 2nd gear ratio x NO - 50 rpm
NO: Transmission output speed
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
05-399
TRANSAXLE [ECT] (April, 2003)
OFF malfunction (E) and (F)
3rd gear ratio x NO + 50 rpm
or
Engine speed
< 3rd gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (G)
< 4th gear ratio x NO + 50 rpm
and
Engine speed
4th gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (H)
3rd gear ratio x NO + 50 rpm
or
Engine speed
< 3rd gear ratio x NO - 50 rpm
NO: Transmission output speed
OFF malfunction (I)
When one of following secondary parameter conditions met,
(See secondary parameters and condition)
2nd judgment is stopped.
ON malfunction
Following conditions met (1) or (2)
(1): ON malfunction (A)
(2): ON malfunction (B), (C), (D), (E), (F), (G), (H)
(1)
ON malfunction (A)
3rd gear ratio x NO - 50 rpm
and
Engine speed
< 3rd gear ratio x NO + 50 rpm
NO: Transmission output speed
(2)
There are 2 judgments steps/driving cycle
1st judgment step: when following conditions ON malfunction (B) met, temporary flag becomes ON.
It is necessary 2 judgments/driving cycle
2nd judgment step: when following conditions met, pending fault code becomes ON.
(ON malfunction (D), (F) and (H)) or (ON malfunction (C), (E), (F) and (G))
ON malfunction (B)
NElast - NEcurrent
< 512.5 rpm at throttle valve opening angle 40 %
NElast: Engine speed at last ECM selected gear
(Condition vary with throttle valve opening angle)
NEcurrent: Engine speed at current ECM selected gear
ON malfunction (C)
< 1st gear ratio x NO + 50 rpm
Engine speed
NO: Transmission output speed
ON malfunction (D)
< 2nd gear ratio x NO + 50 rpm
and
Engine speed
2nd gear ratio x NO - 50 rpm
NO: Transmission output speed
ON malfunction (E)
3rd gear ratio x NO + 50 rpm
or
Engine speed
< 3rd gear ratio x NO - 50 rpm
NO: Transmission output speed