Ford Fusion hybrid 2012 - Keep-Alive Memory (KAM) Power; Equipment Grounding Guidelines; Wire Insulation; Terminals and Connectors

2-12 Electrical
Section 2: Electrical
Keep-Alive Memory (KAM) Power
The electronic engine and/or transmission control modules and the HVTB BECM require low
battery voltage (12 volts) to be supplied at all times to maintain the keep-alive memory (KAM).
Keep this in mind when installing load disconnect switches or solenoids.
Equipment Grounding Guidelines
NOTICE: Do not use/modify any of the high-voltage system grounds or damage to the
high-voltage components may occur.
• Do not ground the body to the transmission or transmission crossmember. Ground accessories
to the chassis or the vehicle battery.
• Splicing into circuitry relating to the electronic engine and/or transmission control systems is not
acceptable because of the adverse effect on the electronic system operation.
• Adequately protect electrical connections exposed to the elements.
Wire Insulation
• Polyvinyl chloride (PVC) rated at 90°C (194°F) is the standard wire insulation that is acceptable
for inside body use but is not acceptable for underhood/underbody wiring.
• Hypalon insulation should be used on links only (Ford specification ESB-M1L54-A).
• Cross-linked polyethylene (XPLPE or SXL) rated at 125°C (257°F) is the required insulation for
underhood/underbody applications (Ford specification ESB-M1L123-A).
• GXL can be used as an alternate wire (Ford specification ESB-M7L85B) as long as the
concentricity specifications are met. To provide a water-resistant seal in conjunction with crimp
connectors, a Duraseal crimp connector is recommended since it is designed to account for
outside wire diameter that is smaller than the present SXL wire.
Terminals and Connectors
Connector Types:
• Submersible (sealed) — A connector that is capable of being immersed in water.
• Weather-resistant — A connector that will retain its sealing and connection qualities while being
exposed to adverse weather conditions.
• Duraseal crimp — A supplier trade name for a sealed wiring repair or splice.
2012 Fusion Hybrid, MKZ Hybrid Modifiers Guide, 09/2011