Toyota Corolla (E120): Shift solenoid ”a” control circuit low/high

Dtc p0973 shift solenoid ”a” control circuit low (shift solenoid valve s1)

Dtc p0974 shift solenoid ”a” control circuit high (shift solenoid valve s1)

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Confirmation driving pattern
Connect the hand–held tester or the obd ii scan tool to the dlc3.  record dtcs and the freeze frame data.  set the check mode using the hand–held tester .  read the value on the misfire counter for each cylinder when idling. If the value is displayed on the misfire c ...

On–vehicle inspection
Notice: ”cold” and ”hot” in these sentences express the temperature of the coils themselves. ”Cold” is from –10 c (14 f) to 50 c (122 f) and ”hot” is from 50 c (122 f) to 100 c (212 f). 1. Inspect ignition coil (with igniter) and spark test  confirm dtc. Notice: ...

Inspection procedure
Hint: if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first. Read freeze frame data using the hand-held tester or the obd ii scan to ...