shift solenoid valve dsl

shift solenoid valve dsl
05-978
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
0527R-37
DTC
P2769
TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT LOW (SHIFT SOLENOID VALVE
DSL)
DTC
P2770
TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT HIGH (SHIFT SOLENOID VALVE
DSL)
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
P2769
ECM detects short in solenoid valve DSL circuit (0.1 sec.)
when solenoid valve DSL is operated (2-trip detection logic)
Short in shift solenoid valve DSL circuit
Shift solenoid valve DSL
ECM
P2770
ECM detects open in solenoid valve DSL circuit (0.1 sec.)
when solenoid valve DSL is not operated (2-trip detection
logic)
Open in shift solenoid valve DSL circuit
Shift solenoid valve DSL
ECM
MONITOR DESCRIPTION
Torque converter lock-up is controlled by the ECM based on engine rpm, engine load, engine temperature,
vehicle speed, transmission temperature, and shift range 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 opened, solenoid DSL applies pressure to the lock-up relay valve and locks the torque converter
clutch. If the ECM detects an open or short in the DSL solenoid circuit, the ECM interprets this as a fault in
the DSL solenoid or circuit. The ECM will turn on the MIL and store the DTC.
MONITOR STRATEGY
Related DTCs
Required sensors/Components
P2769: Shift solenoid valve DSL/Range check (Low resistance)
P2770: Shift solenoid valve DSL/Range check (High resistance)
Shift solenoid valve DSL
Frequency of operation
Continuous
Duration
0.064 sec.
MIL operation
Sequence of operation
2 driving cycles
None
TYPICAL ENABLING CONDITIONS
P2769: Range check (Low resistance)
The monitor will run whenever this DTC is not present.
See page 05-895
Solenoid current cut status
Not cut
Shift solenoid valve DSL
ON
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
1168
DIAGNOSTICS
-
05-979
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
P2770: Range check (High resistance)
The monitor will run whenever this DTC is not present.
See page 05-895
Shift solenoid valve DSL
ON
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
TYPICAL MALFUNCTION THRESHOLDS
P2769: Range check (Low resistance)
8 Ω or less
Shift solenoid valve DSL resistance
P2770: Range check (High resistance)
Shift solenoid valve DSL resistance
100 kΩ or more
COMPONENT OPERATING RANGE
Resistance: 11 to 13 Ω at 20C (68F)
Shift solenoid valve DSL
WIRING DIAGRAM
ECM
E10
Electronically Controlled
Transmission Solenoid
+B
G
3
Y-G
9 DSL
E8
CPU
DSL
G31165
INSPECTION PROCEDURE
1
INSPECT TRANSMISSION WIRE(DSL)
(a)
Transmission Wire Side:
(Connector Front View):
(b)
E10
Disconnect the transmission wire connector from the
transaxle.
Measure the resistance according to the value(s) in the
table below.
Standard:
DSL
D25234
NG
Tester Connection
Specified Condition
20 C (68 F)
3 - Body ground
11 to 13 Ω
Go to step 3
OK
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
1169
05-980
2
DIAGNOSTICS
-
ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE - ECM)
E7
E8
E9
E6
(a)
(b)
(c)
E5
Connect the transmission wire connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the
table below.
Standard:
Tester Connection
Specified Condition
20 C (68 F)
E8 - 9 (DSL) - Body ground
11 to 13 Ω
ECM:
DSL
C82158
C91565
NG
REPAIR OR REPLACE HARNESS
CONNECTOR (SEE PAGE 01-36 )
OR
OK
REPLACE ECM (SEE PAGE 10-9 )
3
INSPECT SHIFT SOLENOID VALVE(DSL)
(a)
(b)
Shift Solenoid Valve DSL:
(-)
Remove the shift solenoid valve DSL.
Measure the resistance according to the value(s) in the
table below.
Standard:
Tester Connection
Specified Condition
20 C (68 F)
Solenoid Connector (DSL) - Solenoid
Body (DSL)
11 to 13 Ω
(+)
(c)
G28385
Connect positive (+) lead to the terminal of solenoid connector, negative (-) lead to the solenoid body.
OK:
The solenoid valve makes an operating noise.
NG
REPLACE SHIFT SOLENOID VALVE(DSL)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (SEE PAGE 40-34 )
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Author:
Date:
1170
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