Page 25.8 Chapter 25 Furnishings APR 2019
25-24 Heated Seats
A. Description
Heated seat bottoms and backrests for the forward seats and outboard rear seats are
an option. Switches to control low and high heat settings for all four heated seats
are located on the panel above the right-side collective boot.
The seat heaters operate only when the generator switch is in the ON position to
reduce the likelihood of inadvertently draining the battery before the engine is started.
B. Schematics
Refer to Figure 98-28 for heated seats installation electrical schematic.
C. Removal and Installation
Seat Assemblies
Remove and install seat assemblies per § 25-21 Part A.
(Circuit Board) Module Assembly Replacement
1. Remove seat assembly per § 25-21 Part A.
2. Disconnect F940 harness from F941-1 module assembly at connector.
3. Drill out rivets securing module to seat assembly pan and remove module. Clean
up debris.
4. Cleco (sheet metal fastener) new module to seat assembly pan. Progressively
remove clecos and install B204-1 rivets securing module to pan. Verify security.
5. Connect F940 harness to module at connector. Verify security.
6. Install seat assembly per § 25-21 Part A.
D. Scheduled Maintenance and Inspections
Refer to § 5-45 100-Hour/Annual Inspection.
F. Special Maintenance and Inspections
1. Open circuit breaker panel and applicable access panels.
2. Verify correct fuses are installed in circuits: F940-2 harness assembly requires (4)
AGC-5 fuses, one for each heated seat.
3. Inspect condition of and verify no obvious damage to F941-1 module assemblies,
F940-1 switch assembly, wire harnesses, copper bus bars, circuit breaker, or
circuit breaker wiring. Verify no loose, chafed, or broken wires or terminals.
Verify no evidence of arcing. Verify installed equipment security.
4. Secure circuit breaker panel and removed access panels.
5. Verify proper function of switches at control panel. Verify temperature setting
system functionality by toggling between high/low/off heat positions.
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