ENGINE MANAGEMENT SYSTEM
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2．Handling – DOs and DONTs
3．Throttle Body Removal
• Disconnect negative terminal of the battery
• Disconnect electric lead wire of throttle position sensor coupler, stepper motor coupler and
MAP/MAT sensor coupler ( if this sensor is mounted on the throttle body)
• Disconnect accelerator cable from throttle body
• Remove air cleaner outlet hose and throttle body outlet hose
THROTTLE BODY ASSEMBLY HANDLING
ACTION REASON
DO: Use care during assembly of harness to throttle
body.
Avoid terminal damage.
DO: Avoid any liquid contamination in the throttle
body area.
Ensure proper operation.
DO: Unload and install units one at a time from
packing trays.
Damage may be done to critical components.
DO: Return any dropped, damaged, or suspect
material with a tag that describes the problem.
(Only warranty cases)
Ensure fast and correct diagnosis of roo
DO: Remove and discard protective caps just before
assembling mating components.
Protects system from contamination, which
can prevent proper operation.
DO: clean the by pass passage after removing
bottom cover
To ensure good idle stability
DO NOT: Use any dropped or impacted unit.
Internal damage may have occurred o
emissions settings may have been upset.
DO NOT: Store units without protective caps in place. Contamination may impair correct operation.
DO NOT: Ship or store near saltwater without
protection.
Corrosion buildup may impact prope
operation.
DO NOT: Exposed to environmental conditions
(Moisture) prior to complete vehicle
installation.
Corrosion buildup may impact prope
operation.
DO NOT: Apply any voltage other than system
voltage for testing.
Damage could occur.
DO NOT: Apply excessive band clamp loading Damage could occur.
DO NOT: Remove packing in a way that allows
contact between parts.
Minimum air leakage could be affected
and/or other damage could occur.
DO NOT: Release the throttle cam abruptly from any
position without the throttle linkage
attached.
Damage could occur.
DO NOT: Let the by pass holes be blocked by dirt o
foreign particles.
This could effect idle stability
DO NOT: Rake, stage, or handle parts in a manne
that allows contact between parts.
Damage will occur.
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