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
TROUBLE CODE DIAGNOSTICS - 7.4L MPI
Code 33 (2 of 3): Manifold Absolute Pressure (MAP) Sensor Circuit (Non-Scan)
High Signal Voltage (Continued)
Repair low or unsteady vacuum problem. Is
action complete?
Verify
Repair
5
6
–
–
–
–
Check for plugged or leaking sensor vacuum
fitting. If OK replace faulty MAP sensor. Is
action complete?
Verify
Repair
Locate and repair short to voltage in CKT 432.
If a problem is found, repair as necessary. Was
a problem found?
7
–
Step 9
Locate and repair open in CKT 814. If a prob-
lem is found, repair as necessary. Was a prob-
lem found?
Verify
Repair
8
9
–
–
Step 9
–
Repair faulty ECM connectors or replace faulty
ECM. Is action complete?
90-861326--1
MARCH 1999
Page 5G-21
Product Specification
CategoriesMercury MerCruiser Manuals
Tags,
Model Year1998, 1999, 2000, 2001
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CopyrightAttribution Non-commercial
(1 votes, average: 5 out of 5)
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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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