DESCRIPTION
Refer to DTC P074011.
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DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
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P074015 | Torque Converter Clutch Circuit Short to Battery or Open | While the vehicle is being driven so that lock-up is requested, a short to +B or open is detected in the solenoid (SL) valve circuit (2-trip detection logic). |
| Comes on | DTC stored | SAE Code: P2770 |
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 an open or short to +B in the solenoid (SL) valve circuit, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCs | P2770: 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 ON to OFF | 0.008192 sec. or more |
Command to solenoid | OFF |
Solenoid terminal voltage level | High |
COMPONENT OPERATING RANGE
Solenoid (SL) valve | Resistance: 11 to 15 Ω at 20°C (68°F) |
CONFIRMATION DRIVING PATTERN
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
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HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Techstream Display | Description |
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NORMAL |
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ABNORMAL |
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INCOMPLETE |
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N/A |
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HINT:
WIRING DIAGRAM
Refer to DTC P074011.
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CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | INSPECT TRANSMISSION WIRE (SOLENOID (SL) VALVE) |
(a) Disconnect the C30 transmission wire connector. |
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
13 (S1) - Body ground | 20°C (68°F) | 11 to 15 Ω |
13 (S1) - Other terminals | Always | 10 kΩ or higher |
(c) Connect the C30 transmission wire connector.
NG | GO TO STEP 4 |
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2. | CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the C78 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
C78-19 (SL) - Body ground | 20°C (68°F) | 11 to 15 Ω |
C78-19 (SL) - Other terminals | Always | 10 kΩ or higher |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM) |
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3. | REPLACE ECM |
(a) Replace the ECM.
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NEXT | PERFORM REGISTRATION |
4. | INSPECT SOLENOID (SL) VALVE |
(a) Remove the solenoid (SL) valve. Click here |
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
Solenoid (SL) valve connector terminal - Solenoid (SL) valve body | 20°C (68°F) | 11 to 15 Ω |
(c) Connect a positive (+) lead from the battery to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Check that the valve moves and makes an operating sound.
OK:
Valve moves and makes an operating sound.
OK | REPAIR OR REPLACE TRANSMISSION WIRE |
NG | REPLACE SOLENOID (SL) VALVE |