Dtc P2769 Torque Converter Clutch Solenoid Circuit Low (Shift Solenoid Valve Dsl)
DESCRIPTION
MONITOR DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DSL)
CHECK WIRE HARNESS (TRANSMISSION WIRE - ECM)
INSPECT SHIFT SOLENOID VALVE DSL
DTC P2769 Torque Converter Clutch Solenoid Circuit Low (Shift Solenoid Valve DSL) |
DTC P2770 Torque Converter Clutch Solenoid Circuit High (Shift Solenoid Valve DSL) |
DESCRIPTION
The shift solenoid valve DSL 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 short in shift solenoid valve DSL circuit when shift 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 shift solenoid valve DSL circuit when shift solenoid valve DSL is not operated (2 trip detection logic)
| - Open 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.
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 position selection. The ECM determines the lock-up status of the torque converter by comparing the engine rpm (NE) to the input rpm (NT). The ECM calculates the actual transmission gear by comparing the input rpm (NT) to the output rpm (SP2). When conditions are appropriate, the ECM requests "lock-up" by applying control voltage to the shift solenoid valve DSL. When the shift solenoid valve DSL is opened, the shift solenoid valve 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 shift solenoid valve DSL circuit, the ECM interprets this as a fault in the shift solenoid valve DSL or its circuit. The ECM will illuminate the MIL and store a DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DSL) |
Disconnect the B29 wire connector.
Measure the resistance of the transmission wire.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
3 (DSL) - Body ground
| 20°C (68°F)
| 11 to 13 Ω
|
| 2.CHECK WIRE HARNESS (TRANSMISSION WIRE - ECM) |
Disconnect the B32 ECM connector.
Measure the resistance of the wire harness side connector.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
B32-79 (DSL) - Body ground
| 20°C (68°F)
| 11 to 13 Ω
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 3.INSPECT SHIFT SOLENOID VALVE DSL |
Remove the shift solenoid valve DSL.
Measure the resistance between the solenoid valve terminal and solenoid valve body.
- Standard resistance:
- 11 to 13 Ω at 20°C (68°F)
Connect the battery's positive (+) lead to the terminal of the solenoid valve connector, and the negative (-) lead to the solenoid body. Then check that the valve moves and makes an operating noise.
- OK:
- Valve moves and makes operating noise.
| | REPLACE SHIFT SOLENOID VALVE DSL |
|
|
| OK |
|
|
|
| REPAIR OR REPLACE TRANSMISSION WIRE |
|
