SERVICE MANUAL NUMBER 24
DIAGNOSTICS
Code 41 (2 of 2): Ignition Control (IC) Circuit
Step
Action
Yes
No
PROCEED TO
Was the “On-Board Diagnostic” (OBD) System Check
Performed?
1.
Step 2.
OBD
a. Clear trouble code 41.
b. Start engine and idle for 2 minutes or until trouble code
2.
3.
41
sets, whichever occurs first.
Is trouble code 41 present?
a. Ignition OFF.
Step 3. Step 7.
b. Disconnect ECM harness connectors.
c. Using a DVOM set on Ohms, probe ECM CKT 423 to
ground.
Is resistance above 3000 ohms?
a. Reconnect ECM.
Step 4. Step 5.
Step 5. Step 7.
b. Start engine and idle for 2 minutes or until trouble code
4.
5.
41
sets, whichever occurs first.
Is trouble code 41 present?
Locate and repair open in CKT 423 or faulty ECM con-
nections.
Step 6.
Verify
Was a problem found?
6.
7.
Replace faulty distributor ignition module.
–
Repair
Trouble code is intermittent. Refer to “Diagnostic Aids” on
facing page. Check harness and connectors for an inter-
mittent open in CKT 423.
–
Index
90-861327--1
OCTOBER 1999
Page 5G-75
| 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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