DESCRIPTION
Shift solenoid valve SL is turned on and off by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
P2769 |
ECM detects a short in the shift solenoid valve SL circuit when the shift solenoid valve SL is operated (2 trip detection logic). |
|
P2770 |
ECM detects an open in the shift solenoid valve SL circuit when the shift solenoid valve SL is not operated (2 trip detection logic). |
|
Fail-safe function:
If the ECM detects a malfunction, it turns shift solenoid valve SL off.
MONITOR DESCRIPTION
Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the ECM sends a signal to shift solenoid valve SL to regulate the hydraulic pressure and provide smoother torque converter engagement. Shift solenoid valve SL responds to commands from the ECM. The valve controls the lock-up relay valve to perform the torque-converter lock-up function. If the ECM detects an open or short in the shift solenoid valve SL circuit, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCs |
P2769: Shift solenoid valve SL/Range check P2770: Shift solenoid valve SL/Range check |
Required sensors/Components |
Shift solenoid valve SL |
Frequency of operation |
Continuous |
Duration |
1 time |
MIL operation |
2 driving cycles |
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
All:
The monitor will run whenever the following DTCs are not stored |
None |
Battery voltage |
8 V or higher |
Ignition switch |
ON |
Starter |
OFF |
Command to shift solenoid valve SL |
ON |
Time after command to solenoid OFF to ON |
0.008 sec. or more |
Time after command to solenoid ON to OFF |
0.008 sec. or more |
TYPICAL MALFUNCTION THRESHOLDS
P2769:
Solenoid terminal voltage level |
Low |
Solenoid terminal voltage level |
High |
COMPONENT OPERATING RANGE
Solenoid terminal voltage level (Command to solenoid ON) |
High |
Solenoid terminal voltage level (Command to solenoid OFF) |
Low |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
PROCEDURE
1. |
INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL) |
(a) Disconnect the E1 transmission wire connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1 (SL) - Body ground |
20°C (68°F) |
11 to 15 Ω |
*a |
Component without harness connected (Transmission Wire) |
NG |
GO TO STEP 3 |
|
2. |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E18-12 (SL) - Body ground |
20°C (68°F) |
11 to 15 Ω |
*a |
Rear view of wire harness connector (to ECM) |
OK |
REPLACE ECM |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
3. |
INSPECT SHIFT SOLENOID VALVE SL |
(a) Remove shift solenoid valve SL (See page ). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Shift solenoid valve SL connector terminal - Shift solenoid valve SL body |
20°C (68°F) |
11 to 15 Ω |
(c) Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.
OK:
Measurement Condition |
Specified Condition |
---|---|
|
Valve moves and makes an operating noise |
*1 |
Shift Solenoid Valve SL |
OK |
REPLACE TRANSMISSION WIRE |
NG |
REPLACE SHIFT SOLENOID VALVE SL |
TS and CG Terminal Circuit
DESCRIPTION
In Test Mode (signal check), a malfunction in the speed sensor that cannot be
detected when the vehicle is stopped can be detected while driving.
Sensor check mode can be entered by connecting terminals TS and CG of the DLC3
and turning the ignition switch from off to ON.
WIRING D ...
Pressure Control Solenoid "B" Performance (Shift Solenoid Valve SL2) (P0776)
SYSTEM DESCRIPTION
The ECM uses the vehicle speed signal and signals from the transmission revolution
sensors (NT, SP2) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
The ECM compares the actual gear with the shift schedule in the ECM memory to
detect mechanical problems of t ...
Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT) (P2714)
SYSTEM DESCRIPTION
The shift solenoid valve SLT controls the transmission line pressure for smooth
transmission operation based on signals from the throttle position sensor and the
vehicle speed sensor. The ECM adjusts the current to shift solenoid valve SLT to
control hydraulic line pressure ...