DIAGNOSTICS
SERVICE MANUAL NUMBER 24
Code 61 (3 of 3) Fuel Pressure (FP) Circuit
Step
Action
Yes
No
PROCEED TO
a. Ignition OFF.
b. Connect a test light to battery positive (B+).
9.
c. Touch test light to harness terminal “C” (fuel pressure
sensor signal).
Is test light on?
Step 12. Step 15.
Step 13. Step 14.
Step 18. Step 17.
Connect DVOM between harness terminal “C” and en-
gine ground (–).
10.
11.
Is voltage reading over 4 volts?
Connect DVOM from fuel pressure sensor harness termi-
nal “B” to a good ground on engine.
Is voltage reading over 4 volts?
a. Disconnect ECM.
b. Touch test light to harness terminal “C” (fuel pressure
sensor signal).
12.
Is test light on?
Step 16. Step 14.
13.
14.
Check for CKT 475 shorted to voltage.
–
–
Locate and repair open in CKT 475 or faulty connection
at ECM.
–
–
15.
16.
Replace fuel pressure sensor.
–
–
–
–
Check for CKT 475 shorted to ground.
CKT 416 open or shorted to ground or faulty connection
at ECM.
17.
18.
–
–
–
–
CKT 813 open or faulty connection at ECM.
Index
Page 5G-90
90-861327--1 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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