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:
Speedometer sensor (atm)
Replacement
1. Remove air cleaner case
2. Remove air cleaner hose no.1
3. Remove speedometer sensor
disconnect the connector.
remove the bolt and speedometer sensor assembly.
remove the clip and driven gear from the speedometer
sensor.
4. Install speedometer sensor
...
Circuit description
Refer to dtc p0115
Dtc no.
Dtc detection condition
Trouble area
P0116
If engine coolant temperature (ect) was between 35 c (95 °F)
and 60 c (140 °F) when starting the engine, and also conditions
(a) and (b) are met:
vehicle has run with acceleration an ...
Inspection
1. Inspect driver’s door lock
Inspect the door lock motor operation.
Standard:
If the result is not as specified, replace the door lock assembly.
Inspect the door lock and unlock switch continuity.
Standard:
If the result is not as specified, replace the door lock assem ...