Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PNP SW SIGNALS

With CONSULT-III

Turn ignition switch ON. (Do not start engine.)
Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
Change selector lever to "P", "R", "N" and "D" positions to check the value of "INH SW1" "INH SW2" "INH SW3" "INH SW4" and "INH SW3M".

INH SWITCH CONDITION

Shift position	"INH SW1"	"INH SW2"	"INH SW3"	"INH SW4"	"INH SW3M"
P	OFF	OFF	OFF	OFF	OFF
R	ON	OFF	OFF	ON	OFF
N	ON	ON	OFF	OFF	OFF
D	ON	ON	ON	ON	ON

Without CONSULT-III

Turn ignition switch ON. (Do not start engine.)
Change selector lever to "P", "R", "N" and "D" positions to check voltage between the TCM connector terminals and ground.

VOLTAGE REFERENCE CHART

Shift position	Connector		F57
	Terminal
	27 - Ground	34 - Ground	35 - Ground	36 - Ground	32-Ground
P	Battery voltage	10.0 V - Battery voltage	8.0 V - Battery voltage	10.0 V - Battery voltage	8.0 V - Battery voltage
R	0 V	10.0 V - Battery voltage	8.0 V - Battery voltage	0 V	8.0 V - Battery voltage
N	0 V	0 V	8.0 V - Battery voltage	10.0 V - Battery voltage	8.0 V - Battery voltage
D	0 V	0 V	0 V	0 V	0 V

Fig 1: Checking Voltage Between TCM Connector Terminals And Ground

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

OK or NG

OK: GO TO 5.

NG: GO TO 2.

CHECK PNP SWITCH CIRCUIT

Turn ignition switch OFF.
Disconnect TCM connector.

Check continuity between TCM connector terminals and ground.

PNP SWITCH CIRCUIT

Connector	Terminal	Condition	Continuity
F57	27 - ground	Select lever in "P" position	No
	27 - ground	Select lever in other positions	Yes
	34 - ground	Select lever in "P" and "R" positions	No
	34 - ground	Select lever in other positions	Yes
	35 - ground	Select lever in "P", "R" and "N" positions	No
	35 - ground	Select lever in other positions	Yes
	36 - ground	Select lever in "P" and "N" positions	No
	36 - ground	Select lever in other positions	Yes
	32 - ground	Select lever in "P", "R" and "N" positions	No
	32 - ground	Select lever in other positions	Yes

Fig 2: Checking Continuity Between TCM Connector Terminals And Ground

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

If OK, check harness for short-circuit to ground or power supply.

OK or NG

OK: GO TO 5.

NG: GO TO 3.

CHECK HARNESS BETWEEN TCM AND PNP SWITCH

Turn ignition switch OFF.
Disconnect TCM connector and CVT unit harness connector.

Check continuity between TCM connector terminals and CVT unit harness connector terminals.

HARNESS BETWEEN TCM AND PNP SWITCH

Item	Connector	Terminal	Continuity
TCM	F57	27	Yes
CVT unit harness connector	F30	4	Yes
TCM	F57	34	Yes
CVT unit harness connector	F30	5	Yes
TCM	F57	35	Yes
CVT unit harness connector	F30	14	Yes
TCM	F57	32	Yes
CVT unit harness connector	F30	18	Yes
TCM	F57	36	Yes
CVT unit harness connector	F30	15	Yes

Fig 3: Checking Continuity Between TCM Connector Terminals And CVT Unit Harness Connector Terminals

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

If OK, check harness for short to ground and short to power.
Reinstall any part removed.

OK or NG

OK: GO TO 4.

NG: Repair or replace damaged parts.

DETECT MALFUNCTIONING ITEM
Check the following.
- PNP switch. Refer to "COMPONENT INSPECTION ".
OK or NG

OK: GO TO 5.

NG: Repair or replace damaged parts.
CHECK DTC
Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG

OK: INSPECTION END

NG: GO TO 6.
CHECK TCM
1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG

OK: INSPECTION END

NG:
1. Repair or replace damaged parts.
2. Replace the transaxle assembly. Refer to "REMOVAL AND INSTALLATION ".