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 CVT SHIFT SELECTOR SWITCH FUNCTION

CONSULT

Turn ignition switch ON.
Select "SFT PN -IPDM" and "SFT PN/N SW" in "Data Monitor" mode.

Check "SFT PN -IPDM" and "SFT PN/N SW" indication under the following conditions:

Monitor item	Condition		Indication
SFT PN -IPDM	CVT Shift selector	Any position other than P (Park) or N (Neutral) position	OFF
		P (Park) or N (Neutral) position	ON
SFT PN/N SW	CVT Shift selector	Any position other than P (Park) or N (Neutral) position	OFF
		P (Park) or N (Neutral) position	ON

Is the inspection result normal?

YES

Refer to Intermittent Incident .

If "SFT PN -IPDM" is incorrect. GO TO 2.

If "SFT PN/N SW" is incorrect. GO TO 5.

CHECK IPDM E/R INPUT SIGNAL

Turn ignition switch OFF.
Disconnect IPDM E/R connector.
Turn ignition switch ON.

Check voltage between IPDM E/R harness connector and ground.

(+)		(-)	Condition		Voltage (Approx.)
IPDM E/R
Connector	Terminal
F51	66	Ground	Selector lever	P (Park) or N (Neutral) position	Battery voltage
				Other than above	0

Is the inspection result normal?

YES

Replace IPDM E/R. Refer to Removal and Installation .

GO TO 3.

CHECK IPDM E/R INPUT SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect transmission range switch connector.

Check continuity between IPDM E/R harness connector and transmission range switch harness connector.

IPDM E/R		Transmission range switch		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E19	37	F86	10	Yes

Check continuity between IPDM E/R harness connector and ground.

IPDM E/R		Ground	Continuity
Connector	Terminal
E19	37		No

Is the inspection result normal?

YES

GO TO 4.

Repair or replace harness.

REPLACE IPDM E/R
1. Replace IPDM E/R. Refer to Removal and Installation .
Inspection End.

CHECK BCM INPUT SIGNAL

Turn ignition switch ON.

Check voltage between BCM harness connector and ground.

(+)		(-)	Condition		Voltage (Approx.)
BCM
Connector	Terminal
M21	39	Ground	Selector lever	P (Park) or N (Neutral) position	Battery voltage
				Other than above	0

Is the inspection result normal?

YES

GO TO 6.

GO TO 7.

REPLACE BCM
1. Replace BCM. Refer to Removal and Installation .
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
Inspection End.

CHECK BCM INPUT SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect transmission range switch connector.
Disconnect BCM connector.

Check continuity between transmission range switch harness connector and BCM harness connector.

Transmission range switch		BCM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F86	10	M21	39	Yes

Check continuity between transmission range switch harness connector and ground.

Transmission range switch		Ground	Continuity
Connector	Terminal
F86	10		No

Is the inspection result normal?

YES

GO TO 8.

Repair or replace harness.

CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .

Inspection End.