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DTC P0980/64 SHIFT SOLENOID 3 SYSTEM (HIGH)

FUNCTION EXPLANATION

The transmission control computer ASSY performs shifting from gear 1 to gear 6 according to the combination of solenoids SL1, SL2, SL3, S1, S2, and S3. In case of a short-circuit or a wire break of one of the solenoid valve systems, the transmission control computer ASSY switches the other solenoids ON or OFF as a failsafe function. In case of failure of all solenoid valves, the circuit becomes just a mechanical hydraulic circuit and manual shifting is performed. (In case of a wire break or a short-circuit, the transmission control computer ASSY stops energizing the failed solenoid.)

DTC No.
  1. Diagnosis conditions
  2. Trouble status
  3. Trouble length
Inspection part
P0973/62
  1. None
  2. S1 solenoid current: 4 A or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S1 signal system)
  • Transmission solenoid ASSY (S1)
  • Transmission control computer ASSY
P0974/62
  1. None
  2. S1 solenoid resistance: 100 kΩ or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S1 signal system)
  • Transmission solenoid ASSY (S1)
  • Transmission control computer ASSY
P0976/63
  1. None
  2. S2 solenoid current: 4 A or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S2 signal system)
  • Transmission solenoid ASSY (S2)
  • Transmission control computer ASSY
P0977/63
  1. None
  2. SL2 solenoid resistance: 100 kΩ or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S2 signal system)
  • Transmission solenoid ASSY (S2)
  • Transmission control computer ASSY
P0979/64
  1. None
  2. S3 solenoid current: 4 A or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S3 signal system)
  • Transmission solenoid ASSY (S3)
  • Transmission control computer ASSY
P0980/64
  1. None
  2. S3 solenoid resistance: 100 kΩ or more
  3. Continuously for 0.1 second or longer
  • Wire harness and connector (S3 signal system)
  • Transmission solenoid ASSY (S3)
  • Transmission control computer ASSY

CIRCUIT DIAGRAM

INSPECTION PROCEDURE

1. INSPECT TRANSMISSION WIRE BY ITSELF (S1/S2/S3)

Detail

2. INSPECT WIRE HARNESS AND CONNECTOR (TRANSMISSION WIRE - TRANSMISSION CONTROL COMPUTER ASSY)

Detail

3. INSPECT TRANSMISSION SOLENOID ASSY (S1) BY ITSELF

Detail

4. INSPECT TRANSMISSION SOLENOID ASSY (S2) BY ITSELF

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5. INSPECT TRANSMISSION SOLENOID ASSY (S3) BY ITSELF

Detail

DTC Clear

Detail