Electrical diagram of automatic transmission Dodge Caravan
1. Automatic transmission wiring harness connector:
*White-black – Torque converter lockup
* Red – Power (12 V)
* Black – Mass
*Green-White – Transmission Fluid Temperature Sensor
* Gray-black – Input shaft speed sensor
* Light green – Output shaft speed sensor
* White – Output signal from the output shaft speed sensor
* Blue – Shift Solenoid 1-2
*Brown – 2-3 Shift Solenoid
*Orange – 3-4 Shift Solenoid
*White-yellow – Torque converter lock-up solenoid
* Orange-brown – Selector Position Sensor
2. Torque converter connector:
* Purple – Diagnostic port
* Black – Mass
3. Other connections:
* Weight – To the car body
* Power (12 V) – From a rechargeable battery
* P-N switch – Included in the gear shifter
* SPD signal – From the engine control unit
Legend:
* Shift solenoids control the engagement/disengagement of their respective clutch packs for shifting gears.
* The torque converter lock-up solenoid locks the torque converter at high speeds to improve transmission efficiency.
* Input and output shaft speed sensors measure the rotation speed of the shafts and transmit this information to the automatic transmission control module.
* The selector position sensor tells the automatic transmission control module which gear is selected by the driver.
* The P-N switch determines whether the transmission is in Park or Neutral.
* The SPD signal (engine revolutions per minute) is used by the automatic transmission control module to determine the moment of gear shifting and adjust the transmission fluid pressure.