AUTO TRANS DIAGNOSIS – 42RE, 44RE, 46RE & 47RE: 1997 Dodge Pickup R3500.pdf

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Taken from Description: Governor pressure is monitored electronically and is used to control transmission shifting. Electronic control system consists of Powertrain Control Module (PCM), governor pressure solenoid, governor pressure sensor, transmission fluid temperature sensor, OD (Overdrive) OFF switch, Throttle Position (TP) sensor and output shaft speed sensor.

NOTE: Governor pressure sensor may also be referred to as governor pressure transducer. Transmission fluid temperature sensor may also be referred to as transmission fluid temperature thermistor. Output shaft speed sensor may also be referred to as transmission shaft speed sensor or shaft speed sensor.

Transmission shifting is controlled by throttle pressure and governor pressure. Governor pressure is generated by electronic components through control of line pressure. Transmission will not upshift into 4th gear under the following conditions:

  • 3rd gear upshift is not complete.
  • OD OFF switch is in OFF position.
  • Throttle is at 3/4 to WOT position.
  • Vehicle speed is too low for 3-4 upshift.
  • Transmission fluid temperature is less than 50 F (10 C) or greater than 250 F (121 C).

Contents:

  • OPERATION
  • POWERTRAIN CONTROL MODULE (PCM)
  • GOVERNOR PRESSURE SENSOR
  • GOVERNOR PRESSURE SOLENOID
  • OD (OVERDRIVE) OFF SWITCH
  • THROTTLE POSITION (TP) SENSOR
  • TRANSMISSION FLUID TEMPERATURE SENSOR
  • OUTPUT SHAFT SPEED SENSOR
  • SYMPTOM TROUBLE SHOOTING
  • PRELIMINARY INSPECTION
  • VISUAL INSPECTION
  • SELF-DIAGNOSTIC SYSTEM
  • DIAGNOSTIC PROCEDURE
  • TRANSMISSION SERVICING – A/T article in AUTOMATIC
  • TRANSMISSION SERVICING section.
  • TEST EQUIPMENT HOOK-UP
  • RETRIEVING DIAGNOSTIC TROUBLE CODES
  • CLEARING DIAGNOSTIC TROUBLE CODES
  • INACTIVE DTC CONDITION
  • REMOVAL & INSTALLATION
  • GOVERNOR PRESSURE SENSOR, GOVERNOR PRESSURE SOLENOID & TRANSMISSION FLUID TEMPERATURE SENSOR
  • CONNECTOR IDENTIFICATION
  • DIAGNOSTIC TESTS
  • TC-12A: TORQUE CONVERTER CLUTCH (TCC) SOLENOID/TRANSMISSION RELAY CIRCUIT
  • TC-12B: TORQUE CONVERTER CLUTCH (TCC) SOLENOID/TRANSMISSION RELAY CIRCUIT
  • TC-12C: TORQUE CONVERTER CLUTCH (TCC) SOLENOID/TRANSMISSION RELAY CIRCUIT
  • TC-12D: TORQUE CONVERTER CLUTCH (TCC) SOLENOID/TRANSMISSION RELAY CIRCUIT
  • TC-50B: TRANSMISSION 3-4 SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-50C: TRANSMISSION 3-4 SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-50D: TRANSMISSION 3-4 SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-74A: TRANSMISSION TEMP SENSOR VOLTAGE TOO LOW
  • TC-75A: TRANSMISSION TEMP SENSOR VOLTAGE TOO HIGH
  • TC-75B: TRANSMISSION TEMP SENSOR VOLTAGE TOO HIGH
  • TC-114A: PNP SWITCH STUCK IN PARK OR IN GEAR
  • TC-141A: GOVERNOR PRESSURE NOT EQUAL TO TARGET @ 15-20 PSI
  • TC-141B: GOVERNOR PRESSURE NOT EQUAL TO TARGET @ 15-20 PSI
  • AUTO TRANS OVERHAUL – 42RE & 44RE
  • TC-141C: GOVERNOR PRESSURE NOT EQUAL TO TARGET @ 15-20 PSI
  • TC-141D: GOVERNOR PRESSURE NOT EQUAL TO TARGET @15-20 PSI
  • TC-142B: GOVERNOR PRESSURE ABOVE 3 PSI IN GEAR WITH 0 MPH
  • TC-148A: TORQUE CONVERTER CLUTCH, NO RPM DROP AT LOCKUP
  • TC-165A: 3-4 SHIFT SOLENOID, NO RPM DROP @ 3-4 SHIFT
  • TC-167A: GOVERNOR PRESSURE SENSOR VOLTAGE TOO LOW
  • TC-168A: GOVERNOR PRESSURE SENSOR VOLTAGE TOO HIGH
  • TC-168B: GOVERNOR PRESSURE SENSOR VOLTAGE TOO HIGH
  • TC-169A: GOVERNOR PRESSURE SENSOR OFFSET VOLTAGE TOO LOW OR TOO HIGH
  • TC-171A: GOVERNOR PRESSURE SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-171B: GOVERNOR PRESSURE SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-171C: GOVERNOR PRESSURE SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-171D: GOVERNOR PRESSURE SOLENOID/TRANSMISSION RELAY CIRCUITS
  • TC-188A: O/D SWITCH PRESSED (LO) MORE THAN 5 MINUTES
  • VER-2A: VERIFICATION TEST
  • VER-5A: VERIFICATION TEST
  • WIRING DIAGRAMS

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