Toyota Corolla (E120): Open vehicle speed sensor circuit/ Vehicle speed signal abnormal

Inspection procedure

Circuit description

Other materials:

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 ...

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, th ...

Replacement
Hint: components: 1. Precaution 2. Disconnect battery negative terminal 3. Remove air bag front rh sensor Disconnect the connector from the airbag front rh sensor.  remove the 2 bolts and airbag front rh sensor. 4. Inspect air bag front rh sensor 5. Install air bag front rh ...