P2767 Code On Dodge

Dodge  P2767 Code

Transmission In Limp In Mode

P2767 trouble code (Torque Conv Clutch Press Ctrl Solenoid Ctrl Circ Range/Perf) is setting. Transmission is in limp in mode.

Potential Causes: 
Lead Frame or Transmission Wiring

Tests/Procedures: 
1. Check the wiring between the transmission and the transmission control module. Make sure the #2 signal wire is not open, shorted to ground, or shorted to any other circuit.

2. If the wiring checks OK, raise all four wheels off the ground, start the vehicle and place the shifter in drive. While lab scope testing the #2 signal wire, obtain second gear. When the transmission is in second gear, there should be a 5-volt square wave pattern being produced by the #2 sensor. If not, replace the sensor.

Help Advise:---
The speed sensors are sold as a complete assembly, which may be called the “lead frame” or ­possibly the “electrohydraulic control unit.”


P2767-Theory of Operation

The Input Speed Sensor 2 is one of two hall effect speed sensors that are used by the Transmission Control Module (TCM) to calculate the transmissions turbine speed. Since the turbine speed could not be measured directly, two of the drive elements are measured. Two input speed sensors are required because both elements are not active in all gears.

  • When Monitored:
    Engine speed greater than 450 RPM with none of the following DTCs present: engine speed, TCM undervoltage, output speed sensor, and/or rear wheel speed DTCs. Also required are all wheel speeds above 250 RPM and no wheel slip detected (signal from the ABS system).
  • Set Condition:
    If the Input Speed Sensor 2 signal is equal to 0 RPM.

POSSIBLE CAUSES:

SENSOR SUPPLY VOLTAGE CIRCUIT OPEN INPUT SPEED SENSOR 2 SIGNAL CIRCUIT OPEN
SPEED SENSOR 2 SIGNAL CIRCUIT SHORT TO ANOTHER CIRCUIT SENSOR GROUND CIRCUIT OPEN SENSOR GROUND CIRCUIT SHORT TO ANOTHER CIRCUIT SPEED SENSOR 2 SIGNAL CIRCUIT SHORT TO GROUND SENSOR GROUND CIRCUIT SHORT TO GROUND INPUT SPEED SENSOR 2 TRANSMISSION CONTROL MODULE.



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