ELECTRICAL COMPONENTS
Electronics Module
15
ELECTRONICS MODULE
See General Warnings on page 1-1.
While it is not necessary to remove the electronics module from the vehicle, access to individual components may be
easier with the module removed.
ELECTRONICS MODULE REMOVAL
1.
Disconnect the battery cables and discharge the controller as instructed.
See WARNINGS “To avoid
unintentionally starting...” and “After disconnecting the batteries, wait 90 seconds...” in General
Warnings on page 1-1.
2.
Remove the batteries from the vehicle to provide enough room to access the controller (8)
(Figure 15-8, Page
15-11)
.
See Battery Replacement on page 16-15.
3.
Remove the bolt (11) that secures the electronics module to the battery bucket.
4.
Pull electronics module forward and disconnect the heavy gauge wires from the controller by removing the
three screws (9).
5.
Disconnect the 16-pin connector, 4-pin connector, and spade connectors from the controller.
6.
Remove the three self-tapping screws (10) that hold the controller to the component mounting plate (14) and
remove the controller from the vehicle.
7.
Remove two nuts (3) on top of the solenoid (5) posts and remove the wires from the posts.
8.
Disconnect the spade connectors on the front of the solenoid.
9.
Disconnect the 6-pin connector and all other leads from the onboard computer (OBC) (15) and the two wires from
Tow/Run switch.
10. Lift the electronics module from the vehicle.
See following WARNING.
WARNING
• Shorting of battery terminals can cause personal injury or death.
– Do not place component mounting plate directly on top of batteries when removing or installing
plate.
– Remove plate from vehicle completely.
ELECTRONICS MODULE INSTALLATION
1.
Return electronics module to its location in vehicle but leave it tilted forward.
2.
Complete connections to the computer, the controller, the Tow/Run switch and the solenoid per the electrical
schematics.
See Wiring Diagrams on page 12-2.
3.
Tighten bolts on the controller to 9 ft-lb (12.2 N·m).
4.
Tighten nuts on the solenoid to 6.4 ft-lb (8.7 N·m).
5.
Set electronics module in place and secure with bolt (11)
(Figure 15-8, Page 15-11)
. Tighten bolt to 40 in-lb (4.5
N·m).
6.
Install the batteries and battery cables in their original locations.
See Battery Replacement on page 16-15.
2009 Electric Precedent Maintenance and Service Manual
Page 15-9