SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Chart A-1 (3 of 4): No Malfunction Indicator Lamp (MIL) -(MDTC) Tool Installed
Action
Value
(s)
Yes
No
Step
Was the “On-Board Diagnostic” (OBD)
System Check Performed?
Go to OBD
1
2
-
-
Go to Step 2 System Check
Attempt to start the engine.
Does The Engine Start?
Go to Step 3
Go to Step 6
1.
RemoveMarineDiagnosticTrouble
Code (MDTC) tool.
2.
3.
Ignition “ON,” engine “OFF.”
Using a test light connected to
ground (–), probe terminal “F” of the
DLC.
3
4
5
-
-
Does The Test Light Illuminate
Brightly?
Go to Step 4 Go to Step 10
Using a test light connected to battery
positive (B+), probe terminal “E” of the
DLC.
Does The Test Light Illuminate
Brightly?
Go to Step
11
Go to Step 5
1.
2.
3.
Ignition “OFF.”
Disconnect ECM “J2” connector.
Using a DVOM, measure the resis-
tance between ECM harness con-
nector terminal “J2-31” and DLC
terminal “E.”
0
ohms
Is The Resistance Within The
Specified Values?
Go to Step
17
Go to Step 13
Check the ECM fuse.
Is The Fuse Good?
6
7
-
-
Go to Step 7 Go to Step 14
1.
2.
3.
Ignition “OFF.”
Disconnect the ECM connectors.
Using a test light connected to
ground, probe ECM harness con-
nector pins “J1-16” and “J1-32.”
Does The Test Light Illuminate
Brightly On Both Circuits?
Go to Step 8 Go to Step 15
1.
2.
Ignition “ON,” engine “0FF.”
Using a test light connected to
ground (–), probe ECM harness
connector pin “J1-11.”
8
9
-
Does The Test Light Illuminate
Brightly?
Go to Step
12
Go to Step 9
Go to Step 16
Check the INJ/ECM fuse.
Is The Fuse Good?
Go to Chart
A-6
_-
Index
90-861326--1
MARCH 1999
Page 5E-59
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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