Toyota Camry (XV70): Torque Converter Clutch Circuit Short to Ground (P074011)
DESCRIPTION
Solenoid (SL) valve 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. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note |
|---|---|---|---|---|---|---|
| P074011 |
Torque Converter Clutch Circuit Short to Ground |
While the vehicle is being driven so that lock-up is not requested, a short to ground is detected in the solenoid (SL) valve circuit (2-trip detection logic). |
| Comes on |
DTC stored | SAE Code: P2769 |
Fail-safe function:
If the ECM detects a malfunction, it turns Solenoid (SL) valve 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 solenoid (SL) valve to regulate the hydraulic pressure and provide smoother torque converter engagement. Solenoid (SL) valve 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 a short to ground in the solenoid (SL) valve circuit, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
|
Related DTCs | P2769: Solenoid (SL) valve/Range check |
|
Required sensors/components | Solenoid (SL) valve |
|
Frequency of operation | Continuous |
|
Duration | 1 time |
|
MIL operation | 2 driving cycles |
|
Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not stored |
None |
| Battery voltage |
8 V or more |
| Engine switch |
On (IG) |
| Starter |
OFF |
TYPICAL MALFUNCTION THRESHOLDS
|
All of the following conditions are met |
0.065536 sec. or more |
|
Time after command to solenoid OFF to ON |
0.008192 sec. or more |
|
Command to solenoid | ON |
|
Solenoid terminal voltage level | Low |
COMPONENT OPERATING RANGE
|
Solenoid (SL) valve | Resistance: 11 to 15 Ω at 20 |
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Reassembly
REASSEMBLY CAUTION / NOTICE / HINT PROCEDURE
1. TEMPORARILY TIGHTEN FRONT DISC BRAKE BLEEDER PLUG (a) Temporarily install the front disc brake bleeder plug to the front disc brake cylinder.
HINT: Fully tighten the front disc brake bleeder plug after bleeding the system.
2. INSTALL FRONT DISC B
