Malfunction Code No. 53, DTC C1734

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

SELF-DIAGNOSTIC RESULTS
1. On "SELECT DIAG" mode, select the "SELF-DIAG RESULT" screen for BCM.
2. Check display contents on "SELF-DIAG RESULT".
Does self-diagnostic results indicate any DTC other than C1734?

YES: Perform trouble diagnosis for DTC. Refer to "DTC INDEX ".

NO: GO TO 2.
CHECK BCM HARNESS CONNECTORS
Check BCM harness connectors for damage or loose connections.

Are the BCM harness connectors damaged or loose?

YES: Repair or replace damaged parts.

NO: GO TO 3.
BCM POWER SUPPLY AND GROUND
Check BCM power supply and ground. Refer to "REMOVAL AND INSTALLATION ".

Are the power supply and grounds normal?

YES: GO TO 4.

NO: Repair power supply or grounds as necessary.

CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER

Turn ignition switch OFF.
Disconnect BCM harness connector M18 (A) and tire pressure receiver harness connector M70 (B).

Check continuity between BCM harness connector and tire pressure receiver harness connector.

Fig 1: Checking Continuity Between BCM Harness Connector And Tire Pressure Receiver Harness Connector

Courtesy of NISSAN MOTOR CO., U.S.A.

CONTINUITY CHART

BCM		Tire pressure receiver		Continuity
Connector	Terminal	Connector	Terminal
M18	45	M70	1	YES
	46		4
	47		2

Does continuity exist?

YES: GO TO 5.

NO: Repair circuits as necessary.

BCM INPUT/OUTPUT SIGNALS
Check BCM input/output signals. Refer to "REFERENCE VALUE ".

Are the inputs and outputs normal?

YES: Inspection End.

NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".