User's Manual

Repair
Replacing the EFCM Control Module
NOTICE
To avoid damaging the circuit boards when
servicing the control box, wear Part No. 112190
grounding strap on your wrist and ground
appropriately.
To avoid electrical component damage, remove all
system power before plugging any connectors.
1. Follow the steps in Before Servicing, page 36.
2. Loosen the screws (124) and remove the
enclosure cover (117, not shown).
3. Note the position of the EFCM input and output
cables. See Electrical Schematics, page 29.
Disconnect the cables from the EFCM (139).
4. Loosen the screws (142) holding the EFCM to
the enclosure. Remove the module.
5. Install the new EFCM, using the screws (142).
6. Reconnect the cables to the positions as noted
above.
7. Turn on power at the main circuit breaker.
8. Load the softw
are. See
Install Key To
ken or Upgrade Token, page 38.
9. Turn on the con
trol box power switch. Check that
the green is on
, the orange and yellow LEDs are
blinking, an
d the red LED is off.
10. Reinstall th
e cover (117) and tighten the screws
(124).
Figure 29 Replacing the EFCM Control Module
3A2800B
41