Generally, when installing a part with several bolts, nuts, or screws, start them all in their holes and tighten them to a snug fit. Then tighten them according to the specified sequence to prevent case warpage or deformation which can lead to malfunction. Conversely when loosening the bolts, nuts, or screws, first loosen all of them by about a quarter turn and then remove them. If the specified tightening sequence is not indicated, tighten the fasteners alternating diagonally.

Tightening Torque
Incorrect torque applied to a bolt, nut, or screw may lead to serious damage. Tighten fasteners to the specified torque using a good quality torque wrench.

Replacement Parts
ForceExhaust Butterfly Valve Actuator Sensor Resistance Inspection
Turn the ignition switch to OFF.
Disconnect the exhaust butterfly valve actuator sensor
connector (3 pins connector) [A] (see Exhaust Butterfly
Valve Actuator Sensor Input Voltage Inspection).
Connect a digital meter [B] to the exhaust butterfly valve
actuator sensor connector.
Measur ...
For Primary Fuel Injectors
Remove the air cleaner housing (see Air Cleaner Housing
Removal).
Disconnect the injector connector and connect the harness
adapter [A] between these connectors as shown in
the figure.
Main Harness [B]
Primary Fuel Injector #1 [C]
Special Tool - Measuring Adapter: 57001-1700
...
Subthrottle Valve Actuator Inspection
NOTE
Be sure the battery is fully charged.
Remove the air cleaner housing (see Air Cleaner Housing
Removal in the Fuel System (DFI) chapter).
Turn the ignition switch to ON.
Check to see that all the subthrottle valves [A] open and
close smoothly.
Turn the ignition switch to OFF.
I ...