Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INPUT SIGNALS

With CONSULT-III

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

DISPLAY VALUE REFERENCE

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.

CHECK HARNESS BETWEEN TCM AND STEP MOTOR

Turn ignition switch OFF.
Disconnect CVT unit connector and TCM connector.

Check continuity between TCM connector terminals and CVT unit harness connector terminals.

TCM AND STEP MOTOR

Item	Connector	Terminal	Continuity
TCM	F56	11	Yes
CVT unit harness connector	F30	6	Yes
TCM	F56	12	Yes
CVT unit harness connector	F30	7	Yes
TCM	F56	20	Yes
CVT unit harness connector	F30	8	Yes
TCM	F56	21	Yes
CVT unit harness connector	F30	9	Yes

Fig 1: Checking Continuity Between TCM Connector Terminal And CVT Unit Harness Connector Terminals

Courtesy of NISSAN MOTOR CO., U.S.A.

If OK, check harness for short to ground and short to power.
If OK, check continuity between body ground and CVT assembly.
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
Check step motor. Refer to "COMPONENT INSPECTION ."

OK or NG

OK: GO TO 4.

NG: Repair or replace damaged parts.
CHECK DTC
Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG

OK: INSPECTION END

NG: GO TO 5.
CHECK TCM
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.