DTC Detection Logic

DTC DETECTION LOGIC REFERENCE

DTC	Item (CONSULT-III screen terms)	A/T CHECK indicator lamp judgment flicker	Diagnostic item is detected when...	Possible cause
P0731	AT 1ST GR FNCTN	18th	TCM detects any inconsistency in the actual gear ratio.	Harness or connectors (Solenoid circuits are open or shorted.) Input clutch solenoid valve Front brake solenoid valve Direct clutch solenoid valve High and low reverse clutch solenoid valve Each clutch Hydraulic control circuit

DTC CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, perform the following procedure to confirm the malfunction is eliminated.

CHECK ATF TEMPERATURE
With CONSULT-III
1. Start the engine.
2. Select "DATA MONITOR".
3. Check ATF temperature is in the following range.
  ATF TEMP 1 : 20°C - 140°C
Is ATF temperature within specified range?

YES: GO TO 2.

NO: Drive vehicle to warm ATF or stop engine to cool ATF.
CHECK SYMPTOM 1
With CONSULT-III
1. Select "1ST GR FNCTN P0731" of "DTC WORK SUPPORT".
2. Drive vehicle and maintain the following conditions.
  VEHICLE SPEED : 10 km/h (6 MPH) or more
  
  ACCELE POSI : 0.6/8 or more
  
  ENGINE SPEED : TURBINE REV - 50 rpm or more
  
  TURBINE REV : 300 rpm or more
  
  GEAR : "1" position
  
  Manual mode : ON
3. Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from "OUT OF CONDITION" to "TESTING".
  CAUTION: If "TESTING" does not appear on CONSULT-III for a long time, select "SELF-DIAG RESULTS". In case a 1st trip DTC other than P0731 is shown, refer to applicable TROUBLE DIAGNOSIS FOR DTC .
With GST
1. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
  Manual mode switch : ON
  
  Gear position : "1" position
  
  Accelerator opening : 0.6/8 or more
  
  Vehicle speed : 10 km/h (6 MPH) or more
2. Check DTC.
Is "STOP VEHICLE" or "COMPLETED RESULT NG" displayed? / Is "P0731" detected?

YES-1 >> "STOP VEHICLE": GO TO 3.

YES-2 >> "COMPLETED RESULT NG": Go to, DIAGNOSIS PROCEDURE .

YES-3 >> "P0731" is detected: Go to DIAGNOSIS PROCEDURE

NO >> Check intermittent incident. Refer to INTERMITTENT INCIDENT
CHECK SYMPTOM 2
With CONSULT-III
1. Stop vehicle.
2. Drive vehicle in "D" position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.
Is the inspection result normal?

YES: Check Intermittent incident. Refer to "INTERMITTENT INCIDENT ".

NO: Go to , "DIAGNOSIS PROCEDURE ".