STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
87 (Cont'd)
J1587 CODE:
P73.4 PUMP PRESSURE CIRCUIT FAILED LOW- (Below)
P108.4 BAROMETRIC PRESSURE CIRCUIT FAILED LOW . (TBD)
87-30
Verify Repairs
Turn ignition off.
(No codes).
Repairs are complete.
Reconnect all connectors.
Turn ignition on.
Code 73-4 (and
All system diagnostics are
Clear codes.
any other codes).
complete. Please review this
Note status of "Check Engine"
section to find error.
light.
Run engine and attempt to operate
Any other codes
Go to START-1, pg 3-345.41, to
PGC in the "PRESSURE' mode
except Code 73-4.
service other codes.
for one minute.
Read INACTIVE CODES.
Change 3 3-345.409