Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23

SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Discrete Input Circuit Check - Non-Scan 454 / 502 Mag MPI and 8.2L MPI Only
(4 of 5)
TESTING CIRCUITS FOR SHORT-TO-GROUND (–)
STEP
ACTION
VALUE
YES
NO
PROCEED TO
1.
Disconnect BLU/TAN wire from oil pres-
sure switch.
2.
monitor.
Disconnect BLU/TAN wire from gear lube
1
3.
Disconnect BLU/TAN wire from transmis-
sion temperature switch (if equipped).
4.
Key “ON”, engine “OFF”.
Does audio warning buzzer sound?
Step 2
Step 3
1.
2.
3.
Key “OFF”.
Disconnect ECM J1 connector.
Check for continuity between all wires
2
disconnected in “Step 1” and engine ground (–).
Is there continuity on BLU/TAN wire from
oil pressure switch?
Step 4
Step 4
Step 4
Step 3
Step 3
Step 3
Is there continuity on BLU/TAN wire from
gear lube switch?
Is there continuity on BLU/TAN wire from
transmission switch?
3
4
Circuit(s) is not shorted to ground (–).
Repair short-to-ground (–) in affected circuit.
Index
90-861326--1
MARCH 1999
Page 5E-95
Product Specification
CategoriesMercury MerCruiser Manuals
Tags,
Model Year1998, 1999, 2000, 2001
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CopyrightAttribution Non-commercial
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Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 SKU UPC Model
Matt on Apr 08, 2015.

Just need the manual. Wrote review. Can't technically review what I haven't seen yet...


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