Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Electronic controlled automatic transaxle / Shift solenoid ”a” performance (shift solenoid valve s1)

Toyota Corolla (E120): 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

    Share this page:

    Other materials:

    Rear seats
    The seatbacks of the rear seats can be folded down. Folding down the rear seatbacks 1. Move the front seats forward. 2. Stow the rear armrest. (if equipped). 3. Fold the seatback down while pushing the seatback lock release button. Each seatback may be folded separately. WARNING Observe the follo ...

    Overhaul
    Hint: components: 1. Remove front wheel 2. Disconnect front stabilizer link assy lh Remove the nut and disconnect the front stabilizer link assy lh from the shock absorber assy front lh. Hint: if the ball joint turns together with the nut, use a hexagon (6 mm) wrench to hold the st ...

    Throttle body assy
    Components Removal & installation and disassembly & reassembly 1. Drain coolant 2. Remove cylinder head cover no.2 Remove 2 nuts, 2clips and the cylinder head cover no. 2. 3. Remove air cleaner cap sub–assy Disconnect the maf connector.  disconnect the vsv co ...