Toyota Tacoma manuals

Toyota Corolla Repair Manual: System description

The ecm uses the signals from the throttle position sensor, airflow meter and crankshaft position sensor to monitor the engagement condition of the lockup clutch.

Then the ecm compares the engagement condition of the lockup clutch with the lockup schedule in the ecm memory to detect mechanical trouble of the shift solenoid valve sl, valve body and torque converter clutch or automatic transaxle (clutch, brake or gear etc.).

Monitor description

Monitor description

Based on the signals from the throttle position sensor, the airflow meter and the crankshaft position sensor, the ecm sends a signal to the shift solenoid valve sl to regulate the hydraulic pressure and provide smoother gearshifts. The shiftsolenoid valve sl responds to commands from the ecm. The valve controls the lockup relay valve to perform torqueconverter lockup and flexible lockup functions.

The ecm compares the engine rpm (ne) signal and the input speed calculated by output speed sensor (output speed) and gear ratio to detect torque converter lockup. The ecm then compares the lockup status against the lockup schedule in the ecm memory. If the ecm does not detect lockup at the appropriate time, it will conclude that there is a malfunction of shift solenoid sl. The ecm will illuminate the mil.

Monitor strategy

Typical enabling condition

Typical enabling condition

Typical malfunction thresholds

Typical malfunction thresholds

Inspection procedure

Torque converter clutch solenoid performance (shift solenoid valve sl)
Dtc p0741 torque converter clutch solenoid performance (shift solenoid valve sl) ...

Inspection procedure
1 Inspect shift solenoid valve(sl) Remove the shift solenoid valve sl.  measure the resistance according to the value(s) in the table below. Standard: Connect the positive (+ ...

Other materials:

Bluetooth Audio
Operating a Bluetooth enabled portable player 1 Power 2 Volume 3 Select an album, fast-forward or reverse 4 Repeat play 5 Random playback 6 Selecting an item 7 Displays text message 8 Playback 9 Playback/pause 10 Search playback 11 Select a track Selecting an album Press ( ) or ( ...

Removal and installation of fuel control parts
Place for removing and installing of fuel system parts  work in a place with good air ventilation and without anything flammable such as welder, grinder, drill, electric motor or stove in the surroundings.  Never work in a place such as a pit or nearby a pit, as there is a ...

Check mode procedure
Hint: handheld tester only: compared to the normal mode, the check mode has more sensing ability to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode. 1. Check mode procedure(using the handheld tester) ...

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