Honda Acura NSX 1991 Service Manual page 305

reported on.
jumped (page 1 I-181, CODE
12 is indicated.
Do the ECU Reset Procedures
(page 1 l-19).
Road test necessary: Warm up the
engine to normal operating tem-
perature (cooling fan comes on).
Drive the car on the road for ap-
prox. 10 minutes. Try to keep the
engine speed in the 1700- 2600
range.
YES
With the engine at idle, discon-
nect the #5 hose from the EGR
valve and connect a vacuum
pump/gauge to the hose.
Is there any vacuum?
M o v e t h e v a c u u m p u m p / g a u g e t o
EGR VALVE
(To page 1 l-l 27)
Intermittent failure, system is OK
at this time.
Check for poor connections or
loose wires at EGR valve C141,
and control box 0532.
Disconnect 8P connector from
the control box and check the #5
hose for vacuum again.
(To pag le 11-127)
EGR VALVE
RED
II-129