Repair
Repair Overtemperature Switch
1. Perform Shutdown, page 44.
2. Wai t for heaters to cool.
3. Remove heater cover (10).
4. Disconnect overtemperature switches (209) from
cable (46). Test a cros s s pa de te rmin al s w ith
ohmmeter.
a. If the resistance
is not
approximately 0 ohms,
the overte m perature switch needs to be
replaced. Go to step 5.
b. If the resistance
is
approximately 0 ohms,
inspect cable (46) to ensure it is not cut
or open. Reconnect the overtemperature
switch (209) and cable (46). Disconnect
cable from TCM. Test from pi n 1 to 3 and
1 to 4. If resistance is not approximately 0,
and switches are 0. Replace cable in place
of original cable.
5. If switch fails test, remove screws. Discard failed
switch. Apply a thin lay er of thermal compound
110009, install new switch in same location on
housing (201), and secure wi th screws (213).
Reconnect cables.
62 333024F
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