Audio Warning Buzzer Circuit Check
(2 of 2)
1
•
IGNITION “ON.”
BUZZER SHOULD SOUND AND THEN
SILENCE WITHIN 2 SECONDS.
DOES IT?
NO
YES
NO PROBLEM FOUND. RE-
FER TO DIAGNOSTIC AIDS
ON FACING PAGE.
2
•
BUZZER REMAINS “ON” CONSTANTLY
WITH IGNITION “ON.”
3
•
BUZZER NEVER SOUNDS.
DISCONNECT HARNESS CONNECTOR TO
BUZZER, BUZZER SHOULD SILENCE.
DOES IT?
CHECK CIRCUIT BREAKER IN
STARTING/CHARGING SYS-
TEM.
YES
NO
NO
YES
4
•
REPAIR SHORT TO
GROUND IN
AFFECTED CIRCUIT
BETWEEN BUZZER
AND CONNECTOR.
•
•
CHECK FOR
SHORT TO
GROUND IN
AFFECTED CIR-
CUIT. IF CIRCUIT IS
NOT SHORTED, RE-
PLACE FUSE.
RECONNECT
HARNESS
CONNECTOR.
IGNITION “OFF.”
5
DISCONNECT
HARNESS CONNECTOR.
USING FUSED JUMPER
CONNECTED TO
GROUND, PROBE
CONNECTOR (BUZZER
SIDE) OF AFFECTED
CIRCUIT. BUZZER
SHOULD SOUND.
DOES IT?
•
•
DISCONNECT ECM
“J2” CONNECTOR.
IGNITION “ON.”
BUZZER SHOULD BE
SILENT. IS IT?
•
NO
YES
NO
YES
REPAIR SHORT
TO GROUND
BETWEEN
FAULTY ECM.
REPLACE ECM
AND RETEST
BUZZER CIR-
CUIT.
REPLACE BUZZER
AND RECHECK. IF
BUZZER STILL DOES
NOT SOUND, REPAIR
OPEN IN AFFECTED
CIRCUIT.
6
•
•
IGNITION “OFF.”
RECONNECT HARNESS
CONNECTOR.
DISCONNECT ECM “J2”
CONNECTOR.
WITH FUSED JUMPER
STILL CONNECTED TO
GROUND, PROBE ECM
HARNESS ON AFFECTED
CIRCUITS. BUZZER
SHOULD SOUND.
HARNESS
•
•
CONNECTOR
AND ECM “J2”
CONNECTOR.
DOES IT?
YES
NO
FAULTY ECM.
REPAIR
REPLACE ECM
AND RETEST.
OPEN WIRE
OR FAULTY
CONNECTOR
IN AFFECTED
CIRCUIT.
Index
90-823224--2 796
ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5C-83
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you