Diagnosis Procedure

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.

CHECK TCM POWER SOURCE

Turn ignition switch OFF.
Disconnect TCM connector.
Check voltage between TCM vehicle side harness connector terminals.

Fig 1: Checking Voltage Between TCM Vehicle Side Harness Connector Terminals

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

TERMINAL VOLTAGE REFERENCE

TCM vehicle side harness connector			Condition	Voltage (Approx.)
Connector	Terminal		Condition	Voltage (Approx.)
F15	46	5, 42	Ignition switch ON	Battery voltage
	46		Ignition switch OFF	0 V
	48		Ignition switch ON	Battery voltage
	48		Ignition switch OFF	0 V
	45		Always	Battery voltage
	47		Always	Battery voltage

Is the inspection result normal?

YES: GO TO 6.

NO: GO TO 2.

CHECK TCM GROUND CIRCUIT

Turn ignition switch OFF.
Check continuity between TCM vehicle side harness connector terminals and ground.

TERMINAL CONTINUITY REFERENCE

TCM vehicle side harness connector		Ground	Continuity
Connector	Terminal
F15	5		Existed
	42

Is the inspection result normal?

YES: GO TO 3.

NO: Repair or replace damaged parts.

Fig 2: Checking Continuity Between TCM Vehicle Side Harness Connector Terminals And Ground

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

CHECK TCM POWER CIRCUIT

Check voltage between TCM vehicle side harness connector terminals and ground.

TERMINAL VOLTAGE REFERENCE

TCM vehicle side harness connector		Ground	Condition	Voltage (Approx.)
Connector	Terminal
F15	46		Ignition switch ON	Battery voltage
			Ignition switch OFF	0 V
	48		Ignition switch ON	Battery voltage
			Ignition switch OFF	0 V
	45		Always	Battery voltage
	47

Is the inspection result normal?

YES: GO TO 6.

NO: GO TO 4.

Fig 3: Checking Voltage Between TCM Vehicle Side Harness Connector Terminals And Ground

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

CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 1)

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

Check continuity between TCM vehicle side harness connector terminals and IPDM E/R vehicle side harness connector terminal.

TERMINAL CONTINUITY REFERENCE

TCM vehicle side harness connector		IPDM E/R vehicle side harness connector		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F15 (A)	46	F10 (B)	58	Existed
F15 (A)	48	F10 (B)	58	Existed

Fig 4: Checking Continuity Between TCM And IPDM E/R Vehicle Side Harness Connector Terminals

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

Disconnect fuse block (J/B) connector.
Check continuity between TCM vehicle side harness connector terminals and fuse block (J/B) vehicle side harness connector terminal.

TERMINAL CONTINUITY REFERENCE

TCM vehicle side harness connector		Fuse block (J/B) vehicle side harness connector		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F15 (A)	45	E6 (B)	12P	Existed
F15 (A)	47	E6 (B)	12P	Existed

Is the inspection result normal?

YES: GO TO 5.

NO: Repair or replace damaged parts.

Fig 5: Checking Continuity Between TCM And Fuse Block (J/B) Vehicle Side Harness Connector Terminals

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

CHECK HARNESS BETWEEN TCM AND IPDM E/R AND BETWEEN TCM AND BATTERY (PART 2)

Check continuity between TCM vehicle side harness connector terminals and ground.

TERMINAL CONTINUITY REFERENCE

TCM vehicle side harness connector		Ground	Continuity
Connector	Terminal
F15	45		Not existed
	46
	47
	48

Fig 6: Checking Continuity Between TCM Vehicle Side Harness Connector Terminals And Ground

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

Is the inspection result normal?

YES: Check the following. If NG, repair or replace damaged parts.

10A fuse (No. 34, located in IPDM E/R)
10A fuse [No. 11, located in fuse block (J/B)]
Ignition switch. Refer to "WIRING DIAGRAM -BATTERY POWER SUPPLY - ".

NO: Repair or replace damaged parts.

DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES: Replace TCM. Refer to "EXPLODED VIEW ".

NO: Repair or replace damaged parts.