Symptom Chart

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No communication with the 4X4 control module	Scan tool Data link connector (DLC) 4X4 control module Circuitry	Go to Pinpoint Test A .
The 4WD indicators do not operate correctly/do not operate	Instrument cluster (IC) Circuitry 4X4 control module Ignition switch	Go to Pinpoint Test G .
The vehicle does not shift between 2WD and 4WD modes correctly	Mode select switch (MSS) Transfer case 4X4 control module Circuitry Ignition switch	Go to Pinpoint Test B .
The vehicle does not shift between 4WD HIGH and 4WD LOW correctly	Transfer case MSS 4X4 control module Circuitry Transmission drag torque Ignition switch	Go to Pinpoint Test C .
The 4WD system jumps out of gear	Transfer case Mode select switch (MSS)	Go to Pinpoint Test D .
Straight line driveline wind-up	Tire inflation pressure Tire and wheel size Tire wear Axle ratio	Go to Pinpoint Test E .
Flashing 4x4 HIGH and 4x4 LOW indicators 3 times every 2 minutes	Loss of CAN communication between 4X4 control module and instrument cluster (IC)	CHECK the IC for faults. REFER to INSTRUMENT CLUSTER article.
	No communication with the 4X4 control module Ignition switch	CHECK 4X4 control module communication. Go to Pinpoint Test A .
The transfer case makes noise	Tire inflation pressure Tire and wheel size	MAKE SURE that all tires and wheels are the same size and that the inflation pressures are correct.
	Tire tread wear	CHECK tire tread wear to see if there is more than 0.15 mm (0.06 in) difference in tread wear between front and rear. INTERCHANGE one front wheel and one rear wheel. ROAD TEST again.
	Internal components	OPERATE the vehicle in all transmission gears. If there is noise in the transmission in NEUTRAL, or in some gears and not in others, REMOVE and REPAIR the transmission. REFER to AUTOMATIC TRANSMISSION - 5R44E AND 5R55E article. If there is noise in all gears, DISASSEMBLE the transfer case. REFER to TRANSFER CASE article. CHECK the planetary gears, the bearings, the upper and lower drive sprockets and drive chain for damage. INSTALL new parts as necessary.
	Fluid level	FILL with automatic transmission fluid. REFER to TRANSFER CASE article.
The neutral tow does not operate	Smart junction box (SJB) fuse 33 (5A) 4X4 control module Neutral tow system indicator Digital transmission range (TR) sensor Door ajar switch Circuitry: CCF21 (VT/WH) SBP33A (RD) Ignition switch	CARRY OUT the Neutral Tow Functional Test. Go to Pinpoint Test H .
Unable to duplicate customer concern	4WD system and/or related components	CARRY OUT the Electronic Shift On The Fly (ESOF) Functional Test. Go to Pinpoint Test F .