SERVICE MANUAL NUMBER 23
GENERAL SYSTEM DIAGNOSTICS
Chart A-3 (4 of 5): Engine Cranks But Will Not Run
1.
Disconnect injector that did not
blink.
2.
3.
Ignition “ON”.
Using a test light connected to
ground,probe injector harness
connector terminals.
12
–
Does
Brightly On Both Terminals?
Test
Light
Illuminate
Go to Step 13
Go to Step 17
1.
2.
3.
4.
Reconnectors.
Ignition “OFF”.
Disconnect ECM.
Ignition “ON”.
13
5. Using a test light connected to
ground, probe ECM harness
terminals “J2-5” and “J2-21”.
–
Does
Test
Light
Illuminate
Brightly?
Go to Step 19
Go to Step 18
–
Replace faulty TP sensor.
Go to OBD
System Check
14
15
–
–
Is Action Complete?
1.
Locateandrepairopenorshort
to ground in CKT 430.
Go to OBD
System Check
2. If OK, replace faulty ignition
control module.
–
–
Is Action Complete?
Locate and repair short to ground
or replace any injector that mea-
sures under 10 ohms.
Go to OBD
System Check
16
17
–
–
Is Action Complete?
1.
If the light was “OFF” on both
terminals, locate and repair
open in injector feed circuit.
Due to the injectors wired in
parallel, there should be a light
on both terminals. If not, locate
and repair open in the harness
to the tested injector.
Go to OBD
System Check
2.
–
Is Action Complete?
Index
90-861326--1
MARCH 1999
Page 5E-69
| 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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