Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID

SERVICE MANUAL NUMBER 24

DIAGNOSTICS

Code 34 (3 of 3): Manifold Absolute Pressure (MAP) Sensor Circuit

Step

Action

Yes

PROCEED TO

a. Remove the jumper wire from CKT416 and 432.

b. Connect DVOM from harness terminal “A” CKT 814 to

harness terminal “C” CKT 416.

Is voltage reading above 4 volts?

Step 12. Step 13.

–

Repair low or unsteady vacuum problem.

Check for plugged or leaking sensor vacuum fitting. If

OK, replace faulty MAP sensor.

10.

–

Locate and repair intermittent faulty connections. If OK,

replace faulty MAP sensor.

11.

12.

–

Verify

Repair

Locate and repair open or short to ground in CKT 432 or

faulty ECM connections.

–

Locate and repair open or short to ground in CKT 416 or

faulty ECM connections. Also check CKT 416 to the TP

sensor for a short to ground.

13.

–

Index

90-861327--1

OCTOBER 1999

Page 5G-73

Product Specification

Categories	Mercury MerCruiser Manuals
Tags	Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID
Model Year	1998, 1999, 2000, 2001
Download File	Please Enter the Security Characters Shown Below. Letters are Case Sensitive. Your download link will appear upon completing this step. - 895 pages
Document File Type	PDF
Copyright	Attribution Non-commercial

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Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID SKU UPC Model

Fernando Woll on Dec 09, 2014. Boat Engine

Great performance engine.
Class 1