Diagnostic Procedure

With CONSULT-III 

1. Start engine.
2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Start vehicle and read out the value of "STM STEP", "SMCOIL A", "SMCOIL B", "SMCOIL C", and "SMCOIL D".
   ITEM NAME CONDITION CHART
   
   

   Item name	Condition	Display value (Approx.)
   STM STEP	During driving	-20 step - 190 step
   SMCOIL A		Changes ON<==>OFF.
   SMCOIL B
   SMCOIL C
   SMCOIL D

OK or NG 

OK: GO TO  4.

NG: GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect CVT unit connector and TCM connector (A).
3. Check continuity between TCM connector (A) terminals and CVT unit harness connector (B) terminals.
   CONTINUITY REFERENCE CHART
   
   

   Item	Connector	Terminal	Continuity
   TCM	F23	30	Yes
   CVT unit harness connector	F46	6
   TCM	F23	29	Yes
   CVT unit harness connector	F46	7
   TCM	F23	28	Yes
   CVT unit harness connector	F46	8
   TCM	F23	27	Yes
   CVT unit harness connector	F46	9

   Fig 1: Checking Continuity Between TCM Connector (A) Terminals And CVT Unit Harness Connector (B) Terminals

   
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between body ground and CVT assembly.
6. Reinstall any part removed.

OK or NG 

OK: GO TO 3.

NG: Repair open circuit or short to ground or short to power in harness or connectors.

Check step motor. Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 4.

NG: Repair or replace damaged parts.

Perform "DTC CONFIRMATION PROCEDURE ".

OK or NG 

OK: INSPECTION END 

NG: GO TO 5.

1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

OK or NG 

OK: INSPECTION END 

NG: Repair or replace damaged parts.