SERVICE MANUAL NUMBER 24
DIAGNOSTICS
Code 61 (2 of 3) Fuel Pressure (FP) Circuit
Step
Action
Yes
No
PROCEED TO
Was the “On-Board Diagnostic” (OBD) System Check
Performed?
1.
2.
Step 2.
OBD
Are you using a Scan Tool?
Step 3. Step 7.
a. Ignition ON.
Does scan tool indicate fuel pressure sensor voltage
greater than 4 volts?
Step 6. Step 4.
Step 5. Step 4.
3.
4.
Does scan tool indicate fuel pressure sensor voltage
less than .3 volts?
Code 61 is intermittent, refer to “Diagnostic Aids” on
facing page.
–
–
a. Ignition OFF.
b. Disconnect fuel pressure sensor electrical connector.
Jumper fuel pressure sensor harness terminals “B” and
“C” together.
5.
6.
c. Ignition ON.
Does scan tool indicate fuel pressure sensor voltage
greater than 4 volts?
Step 15. Step 7.
Step 13. Step 7.
a. Ignition OFF.
b. Disconnect fuel pressure sensor connector.
c. Ignition ON.
Does scan tool indicate voltage over 4 volts?
a. Ignition ON.
b. Connect DVOM from harness terminal “B” (5 volt refer-
ence to harness terminal “A” (sensor ground).
7.
8.
Is voltage reading over 4 volts?
Step 8. Step 11.
Step 9. Step 10.
Connect DVOM from harness terminal “B” (CKT 416) to
harness terminal “C” (fuel pressure sensor signal, CKT
475).
Is voltage reading over 4 volts?
Index
90-861327--1
OCTOBER 1999
Page 5G-89
| 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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