P1731
P1731 A/T 1ST ENGINE BRAKINGDescription
Fail-safe function to prevent sudden decrease in speed by engine brake other than at M1 position.
DTC Logic
DTC DETECTION LOGIC
P1731:
DTC CONFIRMATION PROCEDURE
NOTE: If "DTC CONFIRMATION PROCEDURE" has been previously preformed, 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.
1. CHECK DTC DETECTION
With CONSULT-III
1. Start the engine.
2. Select "DATA MONITOR".
3. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
ENGINE SPEED: 1,200 rpm
GEAR: "1" position
MANU MODE SW: ON
Is "P1731 A/T 1ST E/BRAKING" detected?
YES >> Go to TM-152, "Diagnosis Procedure".
NO >> Check Intermittent incident. Refer to, "Intermittent Incident". Testing and Inspection
Diagnosis Procedure
1. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to, "Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace the control valve with TCM.
NO >> Repair or replace damaged parts.