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 CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is any malfunction of the "U1000 CAN COMM CIRCUIT" indicated?

YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

No: GO TO 2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis check. Refer to "SELF-DIAGNOSIS "

OK or NG

OK: GO TO 3.

NG: Repair or replace damaged parts.

CHECK INPUT SIGNALS

With CONSULT-III

Start engine.
Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.

Drive vehicle and read out the value of "VEHICLE SPEED" and "ESTM VSP SIG".

VEHICLE SPEED DISPLAY VALUE

Item name	Condition	Display value
ESTM VSP SIG	During driving	Approximately matches the speedometer reading.
VEHICLE SPEED	During driving	Approximately matches the speedometer reading.

Check if there is a great difference between the two values.

OK or NG

OK: GO TO 5.

NG: GO TO 4.

CHECKTCM
Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG

OK: GO TO 5.

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 2.