Page 17
2 Series Carbon Fiber Seat Heater
M
ANUFACTURED
IN
M
ICHIGAN
! USA
Troubleshooting of the electrical system
If the system does not heat up, check the following:
To test the unit you must sit in it for at least a 5-minute period in which the heat has
time to reach the seat surface.
Check the fuse utilized during the installation.
Ensure that all connections are properly mated and that the 12V DC and
ground wires are properly installed. (See seat heater wiring diagram)
A break in the heating element circuit. To check for this, pull on the wires at all
connectors to verify they are properly seated in the connector. Don’t forget the
connector on the back element. Also check for continuity at the 4 pin connector. The
cushion and back elements must be connected and use a multi-meter set to ohms.
See Figure 1
A low voltage condition on the controller input from the fuse box. To verify the
voltage input, use a multi-meter set to volts, across red AND black wires at controller
module (it should read 11-15V).
If the heating elements, switch, and seat harness test OK, then a power problem
exists, check the following:
Using a multi-meter or a test light, start at the power connection and trace back
through all of the connectors and the switch to determine where the power loss is
occurring. Repair as necessary.
If the fuse continues to fail, check the following:
Each pair of heating elements that are installed in the vehicle must have their
own fuse.
A poor ground connection. Check connections or try another grounding point.
Another possible cause is the fuse used for power is computer controlled (try another
fuse location).
IF YOU HAVE ANY QUESTIONS REGARDING THE INSTALLATION OF CHECK
CORPORATION SEAT HEATERS, PLEASE CALL OUR HOTLINE AT 1-800-927-
6787, 8AM TO 5PM EASTERN STANDARD TIME.
