SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Chart A-6 (2 of 2): EFI System/Ignition Relay Check
Step
Action
Value(s)
Yes
No
Was The “On-Board Diagnostic”
1
(OBD)
Performed?
System
Check
–
Go to OBD
Go to Step 2 System Check
1.
2.
Ignition “OFF.”
Remove EFI system relay
connector.
3.
4.
Ignition “ON.”
With test light still connected
to ground, probe relay har-
ness connector terminals
2
–
“86”
and “30.”
Does Test Light Illuminate
Brightly On Both Terminals?
Go to Step 3
Go to Step 4
Go to Step 5
Using test light connected to
battery positive (B+), probe relay
harness connector terminal “85.”
3
4
–
–
Does Test Light Illuminate
Brightly?
Go to Step 6
–
Check relay connector for poor
contact or corrosion. If OK,
replace faulty EFI system relay.
Go to OBD
System
Check
Is Action Complete?
Locate and repair open or short
to ground in circuit that did not
light (CKT 2 and/or CKT 3).
Is Action Complete?
Go to OBD
System
Check
5
6
–
–
–
–
Locate and repair open ground
CKT 150.
Is Action Complete?
Go to OBD
System
Check
Index
90-861326--1
MARCH 1999
Page 5E-83
| 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 |
(1 votes, average: 5 out of 5)
Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...