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.

NOTE: The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.

Activate and display TPMS sensor IDs
Display tire pressure reported by the TPMS sensor
Read TPMS DTCs
Register TPMS sensor IDs

CHECK BCM HARNESS CONNECTORS
Check BCM harness connectors for damage or loose connections.

Is the inspection result normal?

YES

Repair or replace connectors.

NO

GO TO 2.
CHECK BCM POWER SUPPLY AND GROUND
Check BCM power supply and ground. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 3

NO

Repair or replace harness or connectors.

CHECK REMOTE KEYLESS ENTRY RECEIVER POWER CIRCUIT

Check voltage between remote keyless entry receiver connector M27 terminal 1 and ground.

Remote keyless entry receiver

Ground

Voltage

(Approx.)

Connector

Terminal

M27

Battery voltage

Is the inspection result normal?

YES

GO TO 4

Repair or replace harness or connectors.

CHECK REMOTE KEYLESS ENTRY RECEIVER SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect BCM connector M18 and remote keyless entry receiver connector.

Check continuity between BCM connector M18 terminal 119 and remote keyless entry receiver connector M27 terminal 2.

BCM		Remote keyless entry receiver		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M18	119	M27	2	Yes

Check continuity between BCM connector M18 terminal 119 and ground.

BCM		Ground	Continuity
Connector	Terminal
M18	119	-	No

Is the inspection result normal?

YES

GO TO 5

Repair or replace harness or connectors.

CHECK REMOTE KEYLESS ENTRY RECEIVER GROUND CIRCUIT

Check continuity between remote keyless entry receiver connector M27 terminal 3 and ground.

Remote keyless entry receiver		Ground	Continuity
Connector	Terminal
M27	3	-	Yes

Is the inspection result normal?

YES

GO TO 6

Repair or replace harness or connectors.

CHECK BCM INPUT/OUTPUT SIGNALS
Check BCM input/output signals. Refer to Reference Value .

Is the inspection result normal?

YES

Inspection End.

NO

Replace BCM. Refer to Removal and Installation .