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• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The output speed sensor (OSS) is a hall-effect type sensor. The OSS mounts to the automatic transmission case assembly and connects to the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the park gear teeth. The sensor receives battery voltage on the OSS supply voltage circuit from the transmission control module (TCM). As the output shaft rotates, the sensor produces a signal frequency based on the number of teeth on the park gear and rotational speed of the output shaft. This signal is transmitted through the OSS signal circuit to the TCM. The TCM uses the OSS signal to determine line pressure, transmission shift patterns, vehicle speed and gear ratio. The TCM also broadcasts the transmission output speed. The ECM continuously monitors the serial data for the transmission output speed and uses the data to calculate the vehicle speed.
• | The engine is running. |
• | The DTCs run continuously once the above condition is met. |
The ECM detects the vehicle speed is less than 1 km/h for greater than 5 seconds with engine speed and engine torque greater than a threshold value that is calibration dependant.
The ECM detects the vehicle speed is greater than 300 km/h for greater than 1 second.
The ECM detects the CAN signal is not valid for greater than 2 seconds.
DTC P0500 is a Type B DTC.
DTC P0500 is a Type B DTC.
Automatic Transmission Controls Schematics
Electronic Component Description for ISS and OSS information.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
⇒ | If any TCM or communication DTCs are set, diagnose those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Refer to Control Module References for control solenoid valve assembly replacement, set-up, and programming. |
• | Perform the Transmission Adaptive Values Learn following all transmission related repairs. |
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