Description
The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled.
DTC Logic
DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT
Start engine.
Drive vehicle for at least 5 consecutive seconds.
Perform "Self Diagnostic Results" in "TRANSMISSION".
With GST
Follow the procedure "With CONSULT".
Diagnosis Procedure
Regarding Wiring Diagram information, refer to TM-126, "Wiring Diagram".
1.CHECK STEP MOTOR CIRCUIT
Turn ignition switch OFF.
Disconnect TCM connector.
Check resistance between TCM vehicle side harness connector terminals.


4. Check resistance between TCM vehicle side harness connector terminals and ground.


2.CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 1)
Disconnect CVT unit connector.
Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side harness connector terminals.


3.CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.


4.CHECK STEP MOTOR
Check step motor. Refer to TM-111, "Component Inspection (Step Motor)".
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Component Inspection (Step Motor)
1.CHECK STEP MOTOR
1. Check resistance between CVT unit connector terminals.


2. Check resistance between CVT unit connector terminals and ground.


P1745 line pressure control
P1778 step motorDiagnosis system (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
BCM
BCM : CONSULT Function (BCM - BCM)
ECU IDENTIFICATION
The BCM part ...
Front bumper
Exploded View
Tow cover
Engine under cover
Core support cover
Fog lamp cover
Fog lamp (if equipped)
Front bumper fascia
Center support bracket
Upper fascia support
Front bumper upper bracket
Front bumper side bracket
Front bumper fascia seal
Front bumper stiffener ...
Front seat
Exploded View
DRIVER
Driver Seat - With Climate Controlled Seats
Seatback board
Seatback board clip
Seat cushion lower rear finisher
Seat harness
Seat cushion inner finisher inside (RH)
Recline mechanism inner cover
Seat cushion outer finisher (RH)
Seat belt buckle
Seat ...