Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

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

Check continuity between TCM harness connector terminal and ground.

TCM		-	Continuity
Connector	Terminal
F89	38	Ground	Not existed

Is the inspection result normal?

YES

GO TO STEP 2 .

Repair or replace malfunctioning parts.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT

Check resistance between CVT unit harness connector terminal and ground.

CVT unit		-	Condition	Resistance
Connector	Terminal
F209	5	Ground	CVT fluid temperature: 20°C (68°F)	5.5 - 7.0 ?
			CVT fluid temperature: 50°C (122°F)	6.0 - 8.0 ?
			CVT fluid temperature: 80°C (176°F)	6.5 - 8.5 ?

Is the inspection result normal?

YES

INSPECTION END

GO TO STEP 3 .

CHECK CIRCUIT BETWEEN CVT UNIT AND CONTROL VALVE

Disconnect control valve connector. Refer to Removal and Installation .
Check continuity between CVT unit harness connector terminal and control valve harness connector terminal.

CVT unit		Control valve		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F209	5	F207	3	Existed

Is the inspection result normal?

YES

GO TO STEP 4 .

Replace terminal code assembly. Refer to Removal and Installation .

CHECK CIRCUIT BETWEEN CONTROL VALVE AND GROUND

Check resistance between control valve harness connector terminal and ground.

Control valve	-	Condition	Resistance
Terminal
3	Ground	CVT fluid temperature: 20°C (68°F)	5.5 - 7.0 ?
		CVT fluid temperature: 50°C (122°F)	6.0 - 8.0 ?
		CVT fluid temperature: 80°C (176°F)	6.5 - 8.5 ?

Is the inspection result normal?

YES

INSPECTION END

There is malfunction of torque converter clutch solenoid valve circuit. Replace the control valve assembly. Refer to Removal and Installation .