TROUBLE CODE DIAGNOSTICS - 7.4L MPI
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 5G-27
Code 41 (3 of 3): Ignition Control (IC) Circuit (Non-Scan) - Open IC Circuit
STEP ACTION VALUE YES NO
PROCEED TO
4 1. Reconnect ECM.
2. Start engine and idle for 2 minutes or un-
til Marine Diagnostic Code Tool indicates a
trouble code.
3. Ignition “ON,” engine “OFF.”
4. Switch Marine Diagnostic Code Tool to
“Service Mode” and note trouble code.
Is trouble code 41 present?
– Step 7 Step 8
5
Locate and repair open in CKT 423. If a
problem is found, repair as necessary.
Was a
problem found?
–
Step 6
6
Replace faulty distributor ignition module.
Is
action complete?
–
er
y
Repair
–
7
Repair faulty ECM connections or replace
faulty ECM.
Is action complete?
– –
8
Trouble code 41 is intermittent. Refer to “Diag-
nostic Aids” on facing page. Check harness
and connectors for an intermittent open in CKT
423.
– – –
Downloaded from https://needmanual.com/!
To Next Page
Loading...
Need help?
General