GENERAL SYSTEM DIAGNOSTICS
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999
Page 5E-83
Chart A-6 (2 of 2): EFI System/Ignition Relay Check
Step
Action
Value(s)
Yes
No
1
Was The “On-Board Diagnostic”
(OBD) System Check
Performed?
–
Go to Step
2
Go to OBD
System Check
2
1. Ignition “OFF.”
2. Remove EFI system relay
connector.
3. Ignition “ON.”
4. With test light still connected
to ground, probe relay har-
ness connector terminals
“86” and “30.”
Does Test Light Illuminate
Brightly On Both Terminals?
–
Go to Step
3
Go to Step
5
3
Using test light connected to
battery positive (B+), probe relay
harness connector terminal “85.”
Does Test Light Illuminate
Brightly?
–
Go to Step
4
Go to Step
6
4
Check relay connector for poor
contact or corrosion. If OK,
replace faulty EFI system relay.
Is Action Complete?
–
Go to OBD
System
Check
–
5
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
–
6
Locate and repair open ground
CKT 150.
Is Action Complete?
–
Go to OBD
System
Check
–
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