Page 649 of 1897
DI6NX-03
BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
-VHigh Speed
Low Speed
CoilNS
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-267
423 Author: Date:
2001 AVALON (RM808U)
CIRCUIT INSPECTION
DTC
C0200 / 31 - C1331 / 36Speed Sensor Circuit
DTC
C1332 / 38, C1333 / 39Speed Sensor Circuit
CIRCUIT DESCRIPTION
The speed sensor detects a wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
of the ABS and VSC system. Each of the front and rear rotors
has 48 serrations.
When the rotors rotate, a magnetic field emitted by a permanent
magnet in the speed sensor generates an AC voltage. Since
the frequency of this AC voltage changes in direct proportion to
the speed of the rotor, the frequency is used by the ECU to de-
tect the speed of each wheel.
DTC No.DTC Detecting ConditionTrouble Area
C0200 / 31
C0205 / 32
C0210 / 33
C0215 / 34
When any of the following 1. to 3. is detected :
1. Vehicle speed is more than 40 km/h (25 mph), pulses
are not input for 0.01 sec.
2. After the initial start or restart and when the vehicle
speed has reached 12 km/h (7 mph), the wheel speed of
0 km/h (0 mph) is detected.
3. After the initial start or restart and when the vehicle
speed has reached 18 km/h (11 mph), the front wheel
speed of 0 km/h (0 mph) is detected.
Right front, left front, right rear, left rear speed sensor
Each speed sensor circuit
Sensor installation
C1330 / 35
C1331 / 36
C1332 / 38
C1333 / 39
Detecting abnormality in the resistance value of each speed
sensor.Right front, left front, right rear, left rear speed sensor
Each speed sensor circuit
HINT:
DTC No. C0200 / 31 and C1330 / 35 are for the right front speed sensor.
DTC No. C0205 / 32 and C1331 / 36 are for the left front speed sensor.
DTC No. C0210 / 33 and C1332 / 38 are for the right rear speed sensor.
DTC No. C0215 / 34 and C1333 / 39 are for the left rear speed sensor.
Page 666 of 1897
F07892
ECU ABS
Solenoid
Relay
Brake
Actuator3 Engine Room R/B No. 8
5 25
49 52
6 2650 533 4
54
55
DI-284
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
440 Author: Date:
2001 AVALON (RM808U)
3 Check continuity between terminal 3 of engine room R/B No. 8 (for ABS solenoid
relay) and each solenoid terminal of ABS & BA & TRAC & VSC ECU.
PREPARATION:
Disconnect the connector from the ABS & BA & TRAC & VSC
ECU.
CHECK:
Check continuity between terminal 3 of engine room R/B No. 8
and each terminal, 3, 4, 5, 6, 25, 26, 49, 50, 52, 53, 54 and 55
of ECU harness side connector.
OK:
Continuity
HINT:
Resistance of each solenoid coil.
SFLH (5), SRRH (6), SFRH (26), SMC1 (49), SMC2 (50), SRLH
(53): 8 - 9.1 W
SFLR (3), SRRR (4), SRLR (25), SRC2 (52), SRC1 (54), SFRR
(55): 4.0 - 4.6 W
NG Repair or replace harness or brake actuator.
OK
4 Check for open and short circuit in harness and connector between ABS sole-
noid relay and ABS & BA & TRAC & VSC ECU (See page IN-30).
NG Repair or replace harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection. If the connections are normal, the ECU may be defective.
Page 745 of 1897
Q30002
(-)(+)
(-)(+)
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-181
337 Author: Date:
2001 AVALON (RM808U)
DTC P0750, P0755 Shift Solenoid A/B Malfunction
(Shift Solenoid Valve No.1/No.2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed 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 mechanical
trouble of the shift solenoid valves, valve body or automatic transaxle (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, the gear required by the ECM does not
match the actual gear
(2-trip detection logic)Shift solenoid valve No.1/No.2 is stuck open or closed
Valve body is blocked up or stuck
Automatic transaxle (clutch, brake or gear etc.)
HINT:
Check the shift solenoid valve No.1 when DTC P0750 is output and check the shift solenoid valve No.2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check shift solenoid valve No.1 or No.2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No.1 or No.2.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valve, check that the valve opens.
OK:
(a) Solenoid valve does not leak air.
(b) Solenoid valve opens.
NG Replace the shift solenoid valve No.1 or No.2.
OK
DI02K-08
Page 750 of 1897
D04448
(+)
(-)
DI-186
- DIAGNOSTICSAUTOMATIC TRANSAXLE
342 Author: Date:
2001 AVALON (RM808U)
3 Check shift solenoid valve No.1 or No.2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the solenoid connector.
(d) Remove the shift solenoid valve No.1 or No.2.
CHECK:
(a) Measure resistance between solenoid connector and
body ground.
(b) Connect the positive lead to terminal of solenoid con-
nector, negative lead to solenoid body.
OK:
(a) Resistance: 11 - 15 W
(b) The solenoid makes an operating noise.
NG Replace the solenoid valve.
OK
Repair or replace the solenoid wire.
Page 751 of 1897
Q04874
Controlled
Pressure
Drain Controlled
Pressure Line
Pressure
Q08040D02461
(+)
(+)
(-) (-)
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-187
343 Author: Date:
2001 AVALON (RM808U)
DTC P0770 Shift Solenoid E Malfunction
(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 en-
gagement 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, torque converter clutch or automatic transaxle
(clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0770
Lock-up does not occur when driving in the lock-up range
(normal driving at 80 km/h [50 mph]), or lock-up remains ON
in the lock-up OFF range.
(2-trip detection logic)
When lock-up is ON, clutch or brake slips or gear is broken.Shift solenoid valve SL is stuck open or closed
Valve body blocked up or stuck
Lock-up clutch
Automatic transaxle (clutch, brake or gear etc.)
INSPECTION PROCEDURE
1 Check solenoid valve SL operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve SL.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valve, check that the solenoid valve opens.
OK:
(a) Solenoid valve does not leak air.
(b) Solenoid valve opens.
NG Replace the solenoid valve SL.
OK
DI02M-08
Page 755 of 1897
D04449
(+)
(-)
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-191
347 Author: Date:
2001 AVALON (RM808U)
3 Check shift solenoid valve SL.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Disconnect the shift solenoid valve SL connector.
(d) Remove the shift solenoid valve SL.
CHECK:
(a) Measure resistance between terminal SL of shift solenoid
valve and solenoid body.
(b) Connect positive lead to terminal of solenoid connec-
tor, negative lead to solenoid body.
OK:
(a) Resistance: 11 - 15 W at 20 °C (68 °F)
(b) The shift solenoid valve SL makes operation
noise.
NG Replace the shift solenoid valve SL.
OK
Replace or repair the solenoid wire, harness
and connector between ECM and automatic
transaxle solenoid connector.
Page 777 of 1897
AT3417
OK if hot
Add if hot
AT4657
AT8562
AT3417
OK if hot
Add if hot DI-166
- DIAGNOSTICSAUTOMATIC TRANSAXLE
322 Author: Date:
2001 AVALON (RM808U)
(3) Pull out the dipstick and wipe it clean.
(4) Push it back fully into the pipe.
(5) Pull it out and check that the fluid level is in the HOT
range.
If the level is not within the range, add new fluid.
Fluid type: ATF D-II or DEXRON®III (DEXRON®II)
NOTICE:
Do not overfill.
After filling ATF, check the oil level securely then
drive a vehicle.
(b) Check the fluid condition.
If the fluid smells burnt or is black, replace it.
(c) Replace the ATF.
(1) Remove the drain plug and drain the fluid.
(2) Reinstall the drain plug securely.
(3) With the engine OFF add new fluid through the oil
filler pipe.
Fluid type: ATF D-II or DEXRON®III (DEXRON®II)
Capacity: 4.75 liters (5.0 US qts, 4.2 Imp. qts)
(4) Start the engine and shift the shift lever into all posi-
tions from P to L position and then shift into P posi-
tion.
(5) With the engine idling, check the fluid level. Add
fluid up to the COOL level on the dipstick.
(6) Check the fluid level at the normal operating tem-
perature, 70 - 80 °C (158 - 176 °F), and add as
necessary.
NOTICE:
Do not overfill.
Page 778 of 1897
AT4252
0 - 1 mm (0 - 0.04 in.)
Q00199
D02450P N
R
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-167
323 Author: Date:
2001 AVALON (RM808U)
(d) Check the fluid leaks.
Check for leaks in the transaxle.
If there are leaks, it is necessary to repair or replace O-rings,
gasket, oil seals, plugs or other parts.
(e) Inspect and adjust the throttle cable.
(1) Check that the accelerator pedal is fully released.
(2) Check that the inner cable is not slack.
(3) Measure the distance between the outer cable end
and stopper on the cable.
Standard distance: 0 - 1 mm (0 - 0.04 in.)
If the distance is not the standard, adjust the cable by adjusting
nuts.
(f) Inspect and adjust the shift lever position.
When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator is aligned with the correct position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures.
(1) Loosen the nut on the shift lever.
(2) Push the control shaft fully downward.
(3) Return the control shaft lever 2 notches to N posi-
tion.
(4) Set the shift lever to N position.
(5) While holding the shift lever lightly toward the R
position side, tighten the shift lever nut.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
(6) Start the engine and make sure that the vehicle
moves forward when shifting the lever from the N to
D position and reverses when shifting it to the R
position.
