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

TROUBLE CODE DIAGNOSTICS - 7.4L MPI
SERVICE MANUAL NUMBER 23
Code 34 (3 of 3): Manifold Absolute Pressure (MAP) Sensor Circuit (Non-Scan)
Low Signal Voltage
STEP
ACTION
VALUE
YES
NO
PROCEED TO
Locate and repair intermittent faulty connec-
tions. If OK, replace faulty MAP sensor. Is
action complete?
4
5
–
–
–
Locate and repair open or short to ground in
CKT 432. If a problem is found, repair as nec-
essary. Was a problem found?
Step 7
Verify
Locate and repair open or short to ground in
CKT 416E. Also check CKT 416 to the TP sen-
sor for a short to ground. If a problem is found,
repair as necessary. Was a problem found?
Repair
6
7
–
–
Step 7
–
Repair faulty ECM connections or replace
faulty ECM. Is action complete?
Page 5G-24
90-861326--1   MARCH 1999
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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