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### DTC P0722/61 Output Speed Sensor Circuit No Signal

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## DESCRIPTION

The No. 2 vehicle speed sensor (SP2) detects the rotation speed of the transmission output shaft and sends signals to the TCM. The TCM determines the vehicle speed based on these signals.
AC voltage is generated in the No. 2 vehicle speed sensor (SP2) coil as the rotor mounted on the output shaft rotates, and this voltage is sent to the TCM.
The gear shift point and lock-up timing are controlled by the TCM based on the signals from the output speed sensor and throttle position sensor.

DTC No. | DTC Detection Condition | Trouble Area

P0722/61

1. All conditions below are detected 500 times or more continuously
   (2 trip detection logic):

1. No signal from No. 2 vehicle speed sensor (SP2) is input to TCM while 4 pulses of No. 1 vehicle speed sensor signal are sent
2. Vehicle speed is 9 km/h (6 mph) or more for at least 4 sec.
3. PNP switch is OFF

1. Open or short in No. 2 vehicle speed sensor (SP2) circuit
2. No. 2 vehicle speed sensor (SP2)
3. TCM

## MONITOR DESCRIPTION

The output speed sensor (SP2) monitors the output shaft speed. The TCM controls the gear shift point and the lock-up timing based on the signals from the output speed sensor (SP2) and throttle position sensor.
If the TCM detects no signal from the output speed sensor (SP2) even while the vehicle is moving, the TCM will conclude that the output shaft speed sensor (SP2) is malfunctioning. The TCM will illuminate the MIL and set the DTC.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.CHECK NO. 2 VEHICLE SPEED SENSOR INSTALLATION

1. Check the speed sensor installation.

   OK:
     Installation bolt is tightened properly and there is no clearance between sensor and transmission case.

| NG |

SECURELY INSTALL SENSOR OR REPLACE SENSOR

OK |

2.INSPECT NO. 2 VEHICLE SPEED SENSOR

1. Disconnect the T7 sensor connector from the transmission.

1. Measure the resistance of the sensor.

   Standard resistance:

     Tester Connection | Condition | Specified Condition
     1 - 2 | 20°C (68°F) | 560 to 680 Ω

   HINT:

     Reference: Inspect using an oscilloscope.
     Check the waveform of the TCM connector.

   Standard voltage:
     Refer to illustration.:

     Item | Content
     Test Connection | T19-30 (SP2+) - T19-29 (SP2-)
     Tool Setting | 2 V/DIV., 2 msec./DIV.
     Condition | Vehicle speed 20 km/h (12 mph)

| NG |

REPLACE NO. 2 VEHICLE SPEED SENSOR

OK |

3.CHECK WIRE HARNESS (NO. 2 VEHICLE SPEED SENSOR - TCM)

1. Disconnect the T19 TCM connector.

1. Measure the resistance of the wire harness side connector.

   Standard resistance:

     Tester Connection | Condition | Specified Condition
     T19-30 (SP2+) - T19-29 (SP2-) | 20°C (68°F) | 560 to 680 Ω
     T19-30 (SP2+) - Body ground | 20°C (68°F) | 10 kΩ or higher
     T19-29 (SP2-) - Body ground | 20°C (68°F) | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE TCM