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Toyota Corolla Repair Manual: Shift solenoid a performance (shift solenoid valve s1)

Toyota Corolla Repair Manual / Diagnostics / Electronic controlled automatic transaxle / Shift solenoid a performance (shift solenoid valve s1)

Dtc p0751 shift solenoid a performance (shift solenoid valve s1)

System description

The ecm uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual gear position (1st, 2nd, 3rd or o/d gear).

Then the ecm compares the actual gear with the shift schedule in the ecm memory to detect the mechanical trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).

Monitor description

Monitor description

The ecm commands gear shifts by turning the shift solenoid valves on/off. According to the input shaft revolution, intermediate (counter) shaft revolution and output shaft revolution, the ecm detects the actual gear position (1st, 2nd, 3rd or o/d gear position). When the gear position commanded by the ecm and the actual gear position are not same, the ecm illuminates the mil.

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Inspection procedure

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 (+ ...

Inspection procedure
1 Inspect shift solenoid valve(s1) Remove the shift solenoid valve s1. measure the resistance according to the value(s) in the table below. Standard: Connect the positive (+) batt ...

Other materials:

Shifting the shift lever
Vehicles without a smart key system: While the engine switch is in the ON position, depress the brake pedal and move the shift lever. Vehicles with a smart key system: While the engine switch is in IGNITION ON mode, depress the brake pedal and move the shift lever. When shifting the shif ...

Displays and control elements
In the vicinity of the steering wheel Light switch element Turn signal indicator, high beams Instrument cluster Wipers Start/Stop button Indicator/warning lights Instrument cluster The indicator/warning lights can light up in a variety of combinations and colors. Several of the lights are c ...

Laser high beams
Concept The range of the high beams is increased and ensures an even better illumination of the road. General information When the high beams are switched-on, starting with a speed of approx. 37 mph/60 km/h, the laser high beams in the headlight are automatically switched on in addition to the LED h ...

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