Nissan Pathfinder: Transfer: Ty92b - Ecu Diagnosis Information. Awd Control Unit ++

Values on the Diagnosis Tool

NOTE:

The following table includes information (items) inapplicable to this Nissan Pathfinder vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.

 

Monitor item	Condition		Value/Status
Battery voltage	Always		9 – 16 V
Front RH wheel speed	Nissan Pathfinder Vehicle stopped		0.00 mph (0.00 km/h)
	Nissan Pathfinder Vehicle running CAUTION: Check air pressure of tire under standard condition.		Nearly matches the speed meter display (±10% or less)
Front LH wheel speed	Nissan Pathfinder Vehicle stopped		0.00 mph (0.00 km/h)
	Nissan Pathfinder Vehicle running CAUTION: Check air pressure of tire under standard condition.		Nearly matches the speed meter display (±10% or less)
Rear RH wheel speed	Nissan Pathfinder Vehicle stopped		0.00 mph (0.00 km/h)
	Nissan Pathfinder Vehicle running CAUTION: Check air pressure of tire under standard condition.		Nearly matches the speed meter display (±10% or less)
Rear LH wheel speed	Nissan Pathfinder Vehicle stopped		0.00 mph (0.00 km/h)
	Nissan Pathfinder Vehicle running CAUTION: Check air pressure of tire under standard condition.		Nearly matches the speed meter display (±10%)
Warning lamp	4WD warning (on information display): Displayed		On
	4WD warning (on information display): Not displayed		Off
Different diameter tire monitor	Nissan Pathfinder Vehicle running with normal size tire installed		0 – 4 mm
	Nissan Pathfinder Vehicle running with improper size tire installed (Front/rear tire size difference, wear condition)		4 – 8 mm, 8 – mm

*: The values are changed by throttle opening and engine speed.

Reference Value

TERMINAL LAYOUT

PHYSICAL VALUES

Terminal No. (Wire color)		Description		Condition		Value (Approx.)
+	-	Signal name	Input/Output
1 (B)	Ground	Ground	—	Always		0 V
2 (Y)	Ground	4WD temperature sensor	Input	Ignition switch: OFF		0 V
				Ignition switch: ON		Battery voltage
3 (G)	—	CAN-Low	Input/Output	—		—
4 (GR)	—	CAN-High	Input/Output	—		—
5 (W)	Ground	Ignition switch	Input	Ignition switch: ON		Battery voltage
				Ignition switch: OFF		0 V
6 (LG)	Ground	Power supply (4WD control unit)	Input	Always		Battery voltage

CAUTION:

When using circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

 

Fail-Safe

If any malfunction occurs in 4WD electrical system, and control unit detects the malfunction, 4WD warning on information display (combination meter) is displayed to indicate system malfunction. And then 4WD control unit controls starts the fail-safe mode depending on DTC.

DTC No.		Nissan Pathfinder Vehicle condition
C1201	46	Although 4WD control is canceled, the Nissan Pathfinder vehicle can drive at 2WD condition.
C1201	4B
C1203	86
C1210	97
C1211	82
C1212	82
C1213	A2
C1213	A3
C1215	12
C1215	13
C1216	11
C1216	13
C1217	4B
C1218	18
C1218	19
C1219	11
C1219	13
C1220	54
U0076	00
U2140	83
U2140	87
U2248	83
U2248	87
U3D02	06
U3D02	51
U2141	87	No impact to Nissan Pathfinder vehicle behavior. (Continue normal 4WD control.)
U214E	87
U214F	87
U2156	87
U215B	87
U2176	87

Protection Function

4WD system activates its protection function (shuts down 4WD system temporarily) if 4WD system detects high load continuously or the front wheel tire size differs from the rear tire size. (4WD system is automatically restored if 4WD system no longer detects any overload or the tire size difference is eliminated).

DTC No.	4WD warning (on information display)	Error area and root cause	Contents of protection function
—	Refer to 4WD Warning Icon/Display.	Rear final drive assembly in protection mode. It is not malfunction. (Internal temperature rise of electro-hydraulic coupling)	Shuts down 4WD system temporarily (Front wheel drive)
		Malfunction in each tire or different tire diameter

NOTE:

• If the 4WD warning displays during driving but remains not displayed after the engine is restarted, the system is normal. If it again displays after driving for some time, Nissan Pathfinder vehicle must be inspected.

• When there is a difference of revolution speed between the front and rear wheel the shift occasionally changes to direct 4-wheel driving conditions automatically. This is not a malfunction.

 

DTC Inspection Priority Chart

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart:

Priority	Detected item (DTC)
	DTC No.		Item (CONSULT screen term)
1	C1201	46	CONTROLLER
2	U0076	00	Control module comm Bus D Off
	U2140	83	CAN comm err (ECM)
	U2140	87	CAN comm err (ECM)
	U2141	87	CAN comm err (TCM)
	U214E	87	CAN comm err (combination meter)
	U214F	87	CAN comm err (BCM)
	U2156	87	CAN comm err (steering angel sensor)
	U215B	87	CAN comm err (IPDM E/R)
	U2176	87	CAN comm err (CCM)
	U2248	83	CAN comm err (brake control unit)
	U2248	87	CAN comm err (brake control unit)
3	C1203	86	ABS SYSTEM
	C1210	97	ENGINE SIGNAL
	C1211	82	CAN COMM (ABS)
	C1212	82	CAN COMM (ECM)
4	C1213	A2	BATTERY VOLTAGE
	C1213	A3	BATTERY VOLTAGE
5	C1201	4B	CONTROLLER
	C1215	13	OIL TEMPERATURE SENSOR
	C1216	11	MOTOR
	C1216	13	MOTOR
	C1219	11	CONTROLLER TEMPE SENSOR
	C1219	13	CONTROLLER TEMPE SENSOR
6	C1220	54	INCOMP AIR BLEEDING
	U3D02	06	INCOMP PROGRAMMING
	U3D02	51	INCOMP PROGRAMMING
7	C1217	4B	CLUTCH TEMPERATURE
	C1218	18	PUMP
	C1218	19	PUMP
8	C1215	12	OIL TEMPERATURE SENSOR

DTC Index

NOTE:

If some DTCs are displayed at the same time, refer to DTC Inspection Priority Chart.

 

Self Diagnostic Result

DTC No.		Item (CONSULT screen term)	4WD warning message*1 and Master warning lamp	Reference
C1201	46	CONTROLLER	ON	DTC Description
C1201	4B	CONTROLLER	ON	DTC Description
C1203	86	ABS SYSTEM	ON	DTC Description
C1210	97	ENGINE SIGNAL	ON	DTC Description
C1211	82	CAN COMM (ABS)	ON	DTC Description
C1212	82	CAN COMM (ECM)	ON	DTC Description
C1213	A2	BATTERY VOLTAGE	ON	DTC Description
C1213	A3	BATTERY VOLTAGE	ON	DTC Description
C1215	12	OIL TEMPERATURE SENSOR	ON	DTC Description
C1215	13	OIL TEMPERATURE SENSOR	ON	DTC Description
C1216	11	MOTOR	ON	DTC Description
C1216	13	MOTOR	ON	DTC Description
C1217	4B	CLUTCH TEMPERATURE	ON	DTC Description
C1218	18	PUMP	ON	DTC Description
C1218	19	PUMP	ON	DTC Description
C1219	11	CONTROLLER TEMPE SENSOR	ON	DTC Description
C1219	13	CONTROLLER TEMPE SENSOR	ON	DTC Description
C1220	54	INCOMP AIR BLEEDING	ON	DTC Description
U2140	83	CAN comm err (ECM)	ON	DTC Description
U2248	83	CAN comm err (brake control unit)	ON	DTC Description
U3D02	06	INCOMP PROGRAMMING	ON	DTC Description
U3D02	51	INCOMP PROGRAMMING	ON	DTC Description

*1: For 4WD warning message, refer to 4WD Warning.

Network-DTC

DTC No.		Item (CONSULT screen term)	4WD warning message*1 and Master warning lamp	Reference
U0076	00	Control module comm Bus D Off	ON	DTC Description
U2140	87	CAN comm err (ECM)	ON	DTC Description
U2141	87	CAN comm err (TCM)	—	DTC Description
U214E	87	CAN comm err (combination meter)	—	DTC Description
U214F	87	CAN comm err (BCM)	—	DTC Description
U2156	87	CAN comm err (steering angel sensor)	—	DTC Description
U215B	87	CAN comm err (IPDM E/R)	—	DTC Description
U2176	87	CAN comm err (CCM)	—	DTC Description
U2248	87	CAN comm err (brake control unit)	ON	DTC Description

*1: For 4WD warning message, refer to 4WD Warning.