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AUTOMATIC TRANSMISSION ELECTRICAL

AUTOMATIC TRANSMISSION ELECTRICAL. BASIC ELECTRICAL TERMS. CIRCUIT VOLTAGE (Use Voltmeter) CURRENT (Use Ammeter) RESISTANCE (Use Ohmmeter) LOAD POWER SOURCE. Transmission Shop Manual - Page 253. TYPES OF CIRCUITS. SERIES PARALLEL SERIES PARALLEL. Shop Manual - Page 255.

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AUTOMATIC TRANSMISSION ELECTRICAL

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  1. AUTOMATIC TRANSMISSIONELECTRICAL

  2. BASIC ELECTRICAL TERMS • CIRCUIT • VOLTAGE (Use Voltmeter) • CURRENT (Use Ammeter) • RESISTANCE (Use Ohmmeter) • LOAD • POWER SOURCE Transmission Shop Manual - Page 253

  3. TYPES OF CIRCUITS • SERIES • PARALLEL • SERIES PARALLEL Shop Manual - Page 255

  4. TYPES OF CIRCUIT FAILURES • Opens Circuits • Shorted Circuits • Grounded Circuits • Poor Connection (common to transmission problems) Shop Manual - Page 256

  5. ELECTRICAL CONNECTIONS • Many different electrical connections • Must be clean and dry • Must be secure and tight • ATF will deteriorate connections • Wiring condition must be in good shape

  6. ELECTRICAL CONTROLS • Switches • Controlled by Driver of Car • Mechanical Linkages • Predetermined Condition (Programmed) • Hydraulically Controlled High or Low Pressure • Normally Open / Normally Closed • Insulated side of circuit • Ground side of circuit

  7. PRESSURE SWITCHES • Normally Open Single Contact Switch • Normally Open Dual Contact Switch • Apply Air to Test • Ohmmeter

  8. NEUTRAL SAFETY SWITCH • Most Combination ( Back up and Neutral Safety Switch) • Electrical Operation and Circuit • Prevents Starter from engaging in gear • Testing and Adjusting • Can use Voltmeter or Ohmmeter Trans Shop Manual - Pg 47

  9. KICKDOWN SWITCH • Mechanical or Electrical • Electrical • To make transmission downshift on WOT • Located on Transmission or Remote • Testing and Adjustment Shop Manual - Page 51

  10. ELECTRICAL INPUTS • Sensors • Vary Electricity through circuit • Potentiometers (variable resistors

  11. ELECTRICAL OUTPUTS • Solenoids • Change electrical energy into Mechanical energy • Control Shifting • Control Hydraulic Pressure Shop Manual - Page 270

  12. ELECTRICAL OUTPUTS • RELAYS • Normally Open Relay • Normally Closed Relay • Single Contact • Double Contact Shop Manual - Page 257

  13. ELECTRONIC DEFAULTS • Faulty sensor signal will cause transmission to go into default mode • It will protect itself from destruction • Testing for Electronic faults • Scanners • Jumper Wires • Transmission Testers Shop Manual - Page 54 and 283

  14. ADAPTIVE STRATEGY(Computer Relearn) • Relearn after Repair (bat disconnected) • Driveability Concerns • Relearn Procedures Shop Manual - Page 68-69

  15. CIRCUIT BOARD • Install a WHITE wire between 55 & 60. • Install a RED wire between 57 & 167. • Install a WHITE wire between 168 & 169. • Install a GREEN wire between 170 & 58. RK

  16. AVAILABLE VOLTAGE • Place black lead of voltmeter on terminal 58 and red lead on terminal 57. • Black 58 - Red 167 Switch off • Black 58 - Red 168 Switch off • Black 58 - Red 169 Switch off • Black 58 - Red 170 Switch off • Record Readings RK

  17. AVAILABLE VOLTAGE • Place black lead of voltmeter on terminal 58 and red lead on terminal 57. • Black 58 - Red 167 Switch on • Black 58 - Red 168 Switch on • Black 58 - Red 169 Switch on • Black 58 - Red 170 Switch on • Record Readings RK

  18. See Ya Later Dudes!!

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