2005 TOYOTA AVENSIS brake

05JL4−01
05 −534−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
(a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem
is that the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the
following road test referring to the automatic shift schedule and simulate the problem symptoms.
2. ROAD TEST
NOTICE:
Perform the test at the ATF (Automatic Transmission Fluid) temperature 50 to 80 ˚C( 122 to 176 ˚F) in
the normal operation.
(a) D position test: Shift into the D position and fully depress the accelerator pedal and check the following points.
(1 ) Check up −shift operation.
Check that 1
2, 2
3, 3
4 and 4
5th up −shifts take place, and that the shift points conform
to the automatic shift schedule (see page 03 −33).
HINT:
5th Gear Up −shift Prohibition Control
S ATF temperature is −2 ˚C (28 ˚F ) or less.
5th and 4th Gear Lock −up Prohibition Control
S Brake pedal is depressed.
S Accelerator pedal is released.
S Engine coolant temperature is 60 ˚C( 140 ˚F) or less.
(2) Check for shift shock and slip. Check for shock and slip at the 1
2, 2
3, 3
4 and 4
5th up −shifts.
(3) Check for abnormal noise and vibration. Check for abnormal noise and vibration when up −shifting from 1
2, 2
3, 3
4 and 4
5
while driving with the shift lever in the D position, and check while driving in the lock −up condition.
HINT:
The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due
to loss of balance in the differential, torque converter clutch, etc.
(4) Check kick −down operation.
Check vehicle speeds when the 2nd to 1st, 3rd to 2nd, 4th to 3rd, and 5th to 4th kick −downs take
place while driving with the shift lever in the D position. Confirm that each speed is within the
applicable vehicle speed range indicated in the automatic shift schedule (see page 03 −33).
(5) Check for abnormal shock and slip at kick −down.
(6) Check the lock −up mechanism.
SDrive in D position (5th gear), at a steady speed (lock −up ON).
SLightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
SThere is no lock −up function in the 1st, 2nd and 3rd gear.
S4th lock −up operates while uphill −downhill control is active in the D position.
SIf there is a big jump in engine speed, there is no lock −up.

− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−535
AVENSIS Supplement (RM1045E)
(b) S position test
Shift to the S position, depress the accelerator pedal and check the following points:
(1) Check shift operation.
SWhile driving in the D position and 5th gear, shift into the S position and back to the D posi-
tion. Check that the gear change 5
4 down−shift and 4
5up−shift can be performed.
SWith the shift lever in the S position (while the vehicle is stopped), shift into the ”+” position
to check that the shift position on the combination meter changes as follows:1
2, 2

3, 3
4 and 4
5.
SWhile driving in the 4(S) position and 4th gear (at a vehicle speed of approximately 40 to
50 km/h (25 to 31mph)), shift into the ”−” position and check if the 3rd gear down−shift oc-
curs and the engine brake performs properly.
SWhile driving in the 3(S) position and 3rd gear (at a vehicle speed of approximately 30 to
40 km/h (19 to 25 mph)), shift into the ”−” position and check if the 2nd gear down−shift
occurs and the engine brake performs properly.
SWhile driving in the 2(S) position and 2nd gear (at a vehicle speed of approximately 20 to
30 km/h (12to19 mph)), shift into the ”−” position and check if the1st gear down−shift oc-
curs and the engine brake performs properly.
HINT:
Manual shift (S position) is prohibited under either of the following conditions:
SDown−shifting may cause engine overrun.
SThe driver continuously down−shifts. (Down−shifting to1st gear may not be performed.)
(c) R position test:
Shift into the R position, lightly depress the accelerator pedal, and check that the vehicle moves back-
ward without any abnormal noise or vibration.
CAUTION:
Before conducting this test ensure that the test area is free from people and obstruction.
(d) P position test:
Stop the vehicle on a grade (more than 5˚) and after shifting into the P position, release the parking
brake. Then, check that the parking lock pawl holds the vehicle in place.
(e) Uphill/downhill control function test:
(1) Check that the gear does not up−shift to the 4th or 5th gear while the vehicle is driving uphill.
(2) Check that the gear automatically down−shifts from the 5th to 4th or from the 4th to 3rd gear when
brake is applied while the vehicle is driving downhill.

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−411
AVENSIS Supplement (RM1045E)
DTC P0504 BRAKE SWITCH ”A”/”B” CORRELATION
CIRCUIT DESCRIPTION
In this system, the signal of the stop lamp switch is used to judge whether the brake system is abnormal or
not.
The stop lamp switch has a duplex system (signals STP and ST1−) to detect abnormality. When the signals
of depressing and releasing the brake pedal are detected simultaneously, the ECM interprets this as mal-
function of the stop lamp switch.
HINT:
Normal condition is as shown in the table below.
SignalBrake Pedal ReleasedIn TransitionBrake Pedal Depressed
STPOFFONON
ST1−ONONOFF
DTC No.DTC Detection ConditionTrouble Area
P0504
Conditions (a) and (b) continue for 0.5 second or more:
(1trip detection logic)
(a) Ignition switch is in ON
(b) STP signal is OFF when the ST1−signal is OFF (when
brake pedal is released)
SShort in stop lamp switch signal circuit
SStop lamp switch
SECM
05CPW−03

A72924
Free Pushed in
432
1
Stop Lamp Switch
Component Side:
S13
A80995
Brake Pedal
Depressed Brake Pedal
Released
ST 1− (+)
E 1 (− )
ECM Connector E
12
E 10
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −413
AVENSIS Supplement (RM 1045E)
1 CHECK OPERATION OF STOP LAMP
(a) Check if the stop lamps go on and off normally when the brake pedal is depressed and released.
NG REPAIR OR REPLACE STOP LAMP SWITCHCIRCUIT
OK
2 INSPECT STOP LAMP SWITCH ASSY
(a) Remove the S 13 stop lamp switch.
(b) Check for continuity between each pair of the terminals.
Standard:
Switch PositionTester ConnectionSpecified Condition
Switch pin free1−2ContinuitySwitch pin free3− 4No continuity
Switch pin pushed in1− 2No continuitySwitch pin pushed in3− 4Continuity
(c) Reinstall the stop lamp switch.
NG REPLACE STOP LAMP SWITCH ASSY
OK
3 READ VALUE OF HAND −HELD TESTER(STP SIGNAL AND ST 1− VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / STOP LIGHT SW” and read its value displayed on
the hand −held tester.
Standard:
Brake PedalSpecified Condition
DepressedSTP signal ON
ReleasedSTP signal OFF
(c) Measure the voltage between the specified terminals of the E10 and E 12 ECM connectors.
Standard:
Tester ConnectionBrake PedalSpecified Condition
ST 1− (E10−1 4)DepressedBelow 1.5 VST 1(E10 14)
− E1 (E 12− 7)Released7.5 to 14V
OK CHECK FOR INTERMITTENT PROBLEMS
(See page 05 −270)
NG

05−610−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
DTC P0796 PRESSURE CONTROL SOLENOID ”C”
PERFORMANCE (SHIFT SOLENOID VALVE
SL3)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
troubles of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0796The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve SL3 remains open or closed
S Valve body is blocked
S Shift solenoid valve SL3
S Automatic transaxle (clutch, brake or gear etc.)
S 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, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand −held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CW2 −02

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −60 1
AVENSIS Supplement (RM 1045E)
DTC P0776 PRESSURE CONTROL SOLENOID ”B”
PERFORMANCE (SHIFT SOLENOID VALVE
SL2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0776The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve SL2 remains open or closed
S Valve body is blocked
S Shift solenoid valve SL2
S Automatic transaxle (clutch, brake or gear etc.)
S 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, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand −held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CVZ −02

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −595
AVENSIS Supplement (RM 1045E)
DTC P0766 SHIFT SOLENOID ”D” PERFORMANCE
(SHIFT SOLENOID VALVE S4)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0766The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve S4 remains open or closed
S Valve body is blocked
S Shift solenoid valve S4
S Automatic transaxle (clutch, brake or gear etc.)
S 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, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand −held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CVX −03

05−582− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0741TORQUE CONVERTER CLUTCH SOLENOID
PERFORMANCE (SHIFT SOLENOID VALVE
DSL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, Air−flow meter, turbine (input) speed sensor,
intermediate (counter) shaft speed sensor and crankshaft position sensor to monitor the engagement condi-
tion 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 a mechanical problems of the shift solenoid valve DSL, valve body and torque con-
verter clutch.
DTC No.DTC Detection ConditionTrouble Area
P0741
Lock−up does not occur when driving in lock−up range (normal
driving at 80 km/h[50 mph]), or lock−up remains ON in lock−
up OFF range (2−trip detection logic)
SShift solenoid valve DSL remains open or closed
SValve body is blocked
SShift solenoid valve DSL
STorque converter clutch
SAutomatic transaxle (clutch, brake or gear etc.)
SLine pressure is too low
SECM
MONITOR DESCRIPTION
Torque converter lock−up is controlled by the ECM based on speed sensor (NT), speed sensor (NC), engine
rpm, engine load, engine temperature, vehicle speed, transmission temperature, and gear selection. The
ECM determines the lock−up status of the torque converter by comparing the engine rpm (NE) to the input
turbine rpm (NT). The ECM calculates the actual transmission gear by comparing input turbine rpm (NT) to
counter gear rpm (NC). When conditions are appropriate, the ECM requests ”lock−up” by applying control
voltage to shift solenoid DSL. When the DSL is turned on, solenoid DSL applies pressure to the lock−up relay
valve and locks the torque converter clutch.
If the ECM detects no lock−up after lock−up has been requested or if it detects lock−up when it is not re-
quested, the ECM interprets this as a fault in the shift solenoid valve DSL or lock−up system performance.
The ECM will turn on the MIL and store the DTC.
Example:
When any of the following is met, the system judges it as a malfunction.
(a) There is a difference in rotation between before and after torque converters even when the ECM com-
mands lock−up.
(Engine speed is at least 75 rpm greater than input turbine speed.)
(b) There is no difference in rotation between before and after torque converters even when the ECM com-
mands lock−up off.
(The difference between engine speed and input turbine speed is less than 35 rpm.)
05JLJ−01