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
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 malfunction thresholds
Other materials:
Replacement
Hint: components:
1. Remove floor shift shift lever knob sub–assy
2. Remove console panel upper
3. Remove parking brake hole cover sub–assy
4. Remove console box sub–assy rear
5. Separate floor shift cable transmission control shift
Separate the end of the shift cable from the ...
Luggage door hinge torsion bar rh
Replacement
Hint:
installation is in the reverse order of the removal. But the
installation is indicated only when it has a
point.
In the lh side, work in the same procedure as in the rh side.
Since the removal of the torsion bar will cause no tension, operation
of opening and closi ...
Inspection procedure
1 Inspect transmission wire(s2)
Disconnect the transmission wire connector from the
transaxle.
measure the resistance according to the value(s) in the
table below.
Standard:
2 Check harness and connector(transmission wire – ecm)
Connect the transmission connec ...