Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK STEP MOTOR FUNCTION
Perform "Self Diagnostic Results" in "TRANSMISSION".

Is "P1778 STEP MOTR/FNC" detected?

YES: Repair or replace damaged parts. Refer to "DTC LOGIC ".

NO: GO TO 2.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to "DTC LOGIC ".

Is the inspection result normal?

YES: GO TO 3.

NO: Repair or replace damaged parts.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to "DTC LOGIC ".

Is the inspection result normal?

YES: GO TO 4.

NO: Repair or replace damaged parts.
CHECK ENGINE SPEED SIGNAL SYSTEM
Check engine speed signal system. Refer to "DTC LOGIC ".

Is the inspection result normal?

YES: GO TO 5.

NO: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES: Replace TCM. Refer to "EXPLODED VIEW ".

NO: Repair or replace damaged parts.