Lexus ES300 (2002 year). Manual — part 328
C90645
Air
(-)
(+)
(-)
(+)
C90646
-
DIAGNOSTICS
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
05-431
584
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
4
INSPECT SHIFT SOLENOID VALVE DSL
(a)
Remove the shift solenoid valve DSL.
(b)
Applying 490 kPa (5 kgf/cm
2
, 71 psi) of compressed air,
check that the solenoid valve does not leak the air.
OK:
Solenoid valve does not leak air.
(c)
When battery voltage is supplied to the shift solenoid
valve, check that the valve opens.
OK:
Solenoid valve opens.
(d)
Measure the resistance between the terminal DSL of shift
solenoid valve and the solenoid body.
OK:
Resistance: 11 - 13
Ω
at 20
C (68
F)
(e)
Connect positive (+) lead to the terminal of solenoid con-
nector, negative (-) lead to the solenoid body.
OK:
The solenoid valve makes an operationing noise.
NG
REPLACE SHIFT SOLENOID VALVE DSL
OK
5
CHECK TRANSMISSION WIRE
(See page
NG
REPAIR OR REPLACE TRANSMISSION
WIRE(See page
)
OK
6
INSPECT TRANSMISSION VALVE BODY ASSY
NG
REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY(See page
OK
05-432
-
DIAGNOSTICS
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
585
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
7
INSPECT TORQUE CONVERTER CLUTCH ASSY(See page
)
NG
REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY
(See page
)
C93633
Electronically Controlled
Transmission Solenoid
Y
E9
DSL
ECM
11
W-BR
DSL
E1
2
-
DIAGNOSTICS
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
05-433
586
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
DTC
P0773
SHIFT SOLENOID E ELECTRICAL
MALFUNCTION
CIRCUIT DESCRIPTION
The shift solenoid valve DSL 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.
DTC No.
DTC Detection Condition
Trouble Area
P0773
Either (a) or (b) is detected at 1 time:
(2 trip detection logic)
(a) Solenoid resistance is 8
Ω
or less short circuit when sole-
noid is energized
(b) Solenoid resistance is 100
k
Ω
or more open circuit when
solenoid is not energized
Open or short in shift solenoid valve DSL circuit
Shift solenoid valve DSL
ECM
Fail safe function:
If the ECM detects a malfunction, it turns the shift solenoid valve DSL OFF.
WIRING DIAGRAM
0527R-04
C93266
E1
E2
DSL
05-434
-
DIAGNOSTICS
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT]
587
2002 LEXUS ES300 REPAIR MANUAL (RM911U)
INSPECTION PROCEDURE
1
PERFORM ACTIVE TEST BY OBD II SCAN TOOL OR HAND-HELD TESTER
(a)
Warm up the engine.
(b)
Turn the ignition switch OFF.
(c)
Connect the OBD II scan tool or Hand-held tester to the DLC3.
(d)
Turn the ignition switch ON and push the OBD II scan tool or Hand-held tester main SW ON.
(e)
Select the item ”LOCK UP” in the ACTIVE TEST and operate the Lock-up solenoid valves on the OBD
II scan tool or Hand-held tester.
NOTICE:
The values given below for ”Normal Condition” are representative values, so a vehicle may still be
normal even if its value differs from those listed here. Do not depend solely on the ”Normal Condi-
tion” here when deciding whether or not the part is faulty.
Item
Test Details
Diagnostic Note
LOCK UP
[Test Details]
Control the shift solenoid DSL to set the ATM to the lock-up condition.
[Vehicle Condition]
Vehicle Speed: 58 km/h (36 mph) or more
Possible to check the DSL opera-
tion.
OK
CHECK AND REPLACE ECM(See page
NG
2
INSPECT TRANSMISSION WIRE(DSL)
(a)
Disconnect the transmission wire connector (E1) from the
transaxle.
(b)
Measure resistance between the terminal DSL and body
ground.
OK:
Resistance: 11 - 13
Ω
at 20
C (68
F)
NG
OK
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