User Manual

Every 7,500 mi / 12,000 km / 6 mo
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Electrical and lights - ECM connector
•
Check the tightness of the ECM connector. (Refer to Electrical System on page 232 for maintenance instructions.)
Electrical and lights - Wheel sensors
• Check for damaged sensors and connectors, and worn or frayed wires. (Refer to Electrical System on page 232 for
maintenance instructions.)
Electrical and lights - Fuel and diesel exhaust fluid tank sending unit
• Check the mounting screws and electrical connections for worn or damaged wires and connectors. (Refer to Diesel Exhaust
Fluid Tank on page 260 for maintenance instructions.)
Electrical and lights - Power supply harnesses (engine, transmission, etc.)
• Check for worn or damaged insulation, corroded terminals, frayed wires, and oil or fluid leaks on the connectors or wiring. (Refer
to Electrical System on page 232 for maintenance instructions.)
• Wash to remove excess grease. (Refer to Electrical System on page 232 for maintenance instructions.)
Heating and Air Conditioning - Heater and air conditioner
• Perform the checks listed. (Refer to Heater and Air Conditioner Maintenance on page 255 for maintenance instructions.)
Aftertreatment System - System
• Check for leaks and proper support. (Refer to Noise and Emission Control on page 257 for maintenance instructions.)
Aftertreatment System - Diesel exhaust fluid tank
• Inspect the tank, straps, brackets, hoses and fittings for abrasion damage, leaks, tightness and fully engaged connectors. (Refer
to Diesel Exhaust Fluid Tank on page 260 for maintenance instructions.)
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Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
MAINTENANCE - Preventive Maintenance Intervals
those listed here.
Y53-6113-1A1 (11/20) 183
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