DatasheetMap2
2 | OpenTopic | TOC
Contents 4EAT Differential Lock........................................................................................................3 Bypass Module Assembly Preperation................................................................................5 Specifications......................................................................................................................... 6 Ordering Information...........................................................................................................7
OpenTopic | 4EAT Differential Lock | 3
4EAT Differential Lock Subaru Automatic Transmission Diff Lock and Switch Assembly Figure: Duty C Solenoid Bypass Module
In older model, four cylinder Subarus, with automatic transmissions, the Transmission Control Module (TCM) attempts to intelligently divide torque based on traction needs. This transmission modification allows a driver to turn off variable AWD, forcing a full time 50/50 torque split. This option is ideal for snow and heavy mud applications, as well as emergency situations, such as a broken front CV axel. Components: •
Resistors
•
• (2) 10W, 50# • (2) 10W, 100# Perfboard
4 | OpenTopic | 4EAT Differential Lock
•
• (1) 2.75" X 3" Wire
•
• (1) 6" Solid Core - Red • (1) 6" Solid Core - Black • (1) 50" Stranded Core - Color Optional LED
•
• (1) 12V (optional - May Substitute Lighted Switch) Switch
•
• (1) Single Pole, Dual Throw (SPDT) Heat Sinks
•
• (2) Solid Aluminum Insulation •
(1) Roll Heavy-Duty Electrical Tape
Tools Required: • • • • • •
Soldering Iron Wire Cutter Wire Stripper Multimeter Permanent Marker Hot Glue Gun •
Clear Silicon Glue Sticks
Wiring Diagrams (optional): •
Factory Service Manuals (FSM) • •
See "Dignostics Section: Automatic Transmission and Differential: Diagnostics: Transmission Control Module (TCM) I-O Signal.pdf"
OpenTopic | Bypass Module Assembly Preperation | 5
Bypass Module Assembly Preperation Begin by confirming that the resistors are working properly: 1. Set Multimeter to Impedence (#) setting, 2. Touch Red and Black Multimeter Probes to opposite leds of each resistor, 3. Confirm that Multimeter readings correspond to Resistor ratings. Once you have confirmed that each resistor is working proplerly, you may begin assembling the Bypas Module.
6 | OpenTopic | Specifications
Specifications Physical Characteristics Physical Characteristics Wire Length - Solid Core - Red
6 in
Wire Length - Solid Core - Black
6 in
Wire Length - Braided Core
50 in
Resistor 10W, 50#
2
Resistor 10W, 100#
2
Perfboard 2.75" X 3"
1
Light Emitting Diode (LED) 12V
1
Switch: Single Pole, Dual Throw
1
Heat Sink: Aluminum
2
Heavy Duty Electrical Tape
1 roll
Factory Service Manual (FSM)
1
Tools Soldering Iron
300 W
Wire Stripper
Standard
Wire Cutter
Insulated
Multimeter
Digital
Permanent Marker
Black or Red
Glue Gun
Silicone Glue
Bypass Module Operability Specifications Resistance
10-–17 #
Voltage
< 0.5 V
OpenTopic | Ordering Information | 7
Ordering Information This is ordering information for the Solenoid Bypass Module Models P6021A
Current Probe
P6022
Current Probe with Termination
Standard Accessories 6 in. Ground Lead
196-3521-00
Instruction Manual
071-3004-00
Termination
011-0106-00
Replacement Parts 10W, 50# Resistor (2)
016-1952-01
10W, 100# Resistor (2)
016-1952-03
Perfboard, 6" X 2.75"
067-1686-07
Warranty One year, parts and labor. Address 70344 SE Paulina City Road ~ P.O. Box 1 Paulina, OR 97751