Diagnosis Procedure

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

CHECK CONNECTOR
Check the metal deposition, damage, and corrosion of connectors (F215 and F216 and F211 and F213 and F212 and F214 and E73 and E74).

Is the inspection result normal?

YES

GO TO 2 .

NO

Repair or replace malfunctioning parts.
PERFORM TRANSMISSION ADJUSTMENT
1. Perform transmission adjustment. Refer to Work Procedure .
2. Perform DTC CONFIRMATION PROCEDURE. Refer to DTC Description .
Is "P1679" detected?

YES

GO TO 3 .

NO

INSPECTION END

CHECK TCM INPUT SIGNAL

Turn ignition switch OFF.
Disconnect TCM connector.
Check voltage between TCM harness connector terminals and ground.

TCM		-	Condition	Voltage (Approx.)
Connector	Terminal
E74	9	Ground	Ignition switch ON	Battery voltage
			Ignition switch OFF	0 V

Is the inspection result normal?

YES

GO TO 5 .

GO TO 4 .

DETECT MALFUNCTIONING ITEM
Check the following.
- Harness short circuit between IPDM E/R and TCM to power supply or other circuit.
- 10 A fuse (No. 47)
- IPDM E/R
- Ignition switch
- Battery
Is the inspection result normal?

YES

GO TO 5 .

NO

Repair or replace malfunctioning parts.

CHECK TCM INPUT SIGNAL

Check voltage between TCM harness connector terminals and ground.

TCM		-	Condition	Voltage (Approx.)
Connector	Terminal
E73	54	Ground	Ignition switch ON or ACC	Battery voltage
			Ignition switch OFF	0 V

Is the inspection result normal?

YES

INSPECTION END

GO TO 6 .

DETECT MALFUNCTIONING ITEM
Check the following.
- Harness short circuit between accessory relay-2 and TCM to power supply or other circuit.
- 5 A fuse (No. 25)
- Accessory relay-2
- Ignition switch
- Battery
Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace malfunctioning parts.