Pinpoint Test B : P182B, P182C, P182D

B2 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR SIGNAL VOLTAGE

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 4.1 volts?

Yes	GO to B3.
No	For 3.5L GTDI, GO to B4. For 3.5L Ti-VCT, GO to B5.

B3 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR GROUND CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	C1831A-2

Is the voltage greater than 4.1 volts?

Yes	GO to B6.
No	REPAIR the circuit.

B4 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	C1551B-95

Is the resistance less than 3 ohms?

Yes	GO to B6.
No	REPAIR the circuit.

B5 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN

Measure the resistance between.

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	C175E-31

Is the resistance less than 3 ohms?

Yes	GO to B6.
No	REPAIR the circuit.

B6 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to B7.
No	REPAIR the circuit.

B7 CHECK THE TRANSFER CASE FLUID TEMPERATURE SENSOR RESISTANCE

Measure component side :

Positive Lead	Measurement / Action	Negative Lead
C1831A-1	Courtesy of FORD MOTOR COMPANY	C1831A-2

Temperature To Resistance Chart

Temperature C	Temperature F	MIN Ohms	MAX Ohms	MIN Volts	MAX Volts
-40	-40	2.541M	4.545M	4.96	4.98
-30	-22	1.367M	2.337M	4.93	4.96
-20	-4	766K	1.255M	4.87	4.92
-10	14	444.9k	701.4k	4.78	4.86
0	32	267.1k	406.2k	4.65	4.77
10	50	164k	241.2k	4.46	4.62
20	68	103.6k	147.8k	4.19	4.40
25	77	83.21k	116.9k	4.03	4.27
30	86	67.23k	93.12k	3.85	4.12
40	104	44.67k	60.22k	3.45	3.75
50	122	30.35k	39.88k	3.01	3.33
60	140	21.04k	26.99k	2.56	2.87
70	158	14.86k	18.64k	2.13	2.14
80	176	10.68k	13.11k	1.74	1.98
90	194	7.79k	93.85k	1.40	1.60
100	210	5, 781	6, 825	1.12	1.27
110	230	4, 345	5, 038	0.89	1.01
120	248	3, 308	3, 771	0.71	0.79
130	266	2, 549	2, 859	0.57	0.63
140	284	1, 987	2, 194	0.45	0.49
150	302	1, 565	1, 703	0.36	0.39

Does the temperature to resistance specifications match?

Yes

INSTALL a new PCM. REFER to Electronic Engine Controls - 3.5L Ti-VCT. PROGRAM the PCM with the latest calibration. PERFORM the Solenoid Body Strategy Data Download procedure and PERFORM the Solenoid Body Strategy Drive Cycle, REFER to Automatic Transmission - 6F50/6F55 . PROGRAM the PCM with the ATC solenoid bar code information, REFER to Automatic Torque Coupling (ATC) Configuration . PERFORM the AWD Drive Cycle.

INSTALL a new transfer case fluid temperature sensor.

Yes	GO to B2.
No	REFER to Transfer Case - Power Transfer Unit (PTU) .