Lanyard Stop (Emergency Stop) Circuit Check
(2
of 2)
NOTE: THIS CHART ASSUMES THE ENGINE CRANKS BUT WILL NOT START.
•
•
TURN IGNITION “OFF.”
TURN IGNITION “ON” AND CRANK ENGINE DOES ENGINE START?
1
NO
YES
LANYARD STOP CIRCUIT FUNCTIONING
PROPERLY. REFER TO “DIAGNOSTIC AIDS”
ON FACING PAGE.
•
CHECK LANYARD STOP SWITCH TO MAKE
SURE SWITCH IS IN ITS NORMAL POSITION.
IS IT?
2
NO
NO
YES
•
•
•
IGNITION “OFF.”
POSITION SWITCH CORRECTLY AND
REPEAT STEP #1.
3
DISCONNECT 2 WAY HARNESS CONNECTOR.
USING A DVOM, MEASURE RESISTANCE
BETWEEN PIN A (CKT 942) AND PIN B (GRD) OF
OF 2 WAY CONNECTOR. RESISTANCE SHOULD
BE LESS THAN 5K OHMS IS IT?
•
RESISTANCE SHOULD BE INFINITE ON LANYARD
STOP HARNESS SIDE. IS IT?
NONO
YYESES
BASIC HEI PROBLEM.
REFER TO “IGNITION
SYSTEM CHECK.”
4
5
RESISTANCE LOWER ON
ECM SIDE OF CONNECTOR.
RESISTANCE LOWER ON
LANYARD STOP SWITCH
SIDE OF CONNECTOR.
4
•
DISCONNECT ECM J-1
CONNECTOR.
CHECK FOR FAULTY
LANYARD STOP SWITCH.
IF OK, REPAIR SHORT TO
GROUND IN CKT 942
AND RETEST.
•
MEASURE RESISTANCE
BETWEEN PIN J1-21 OF
ECM CONNECTOR AND
GROUND. RESISTANCE
SHOULD BE INFINITE.
IS IT?
YESYES
YES
NNNOOO
FAULTY ECM. REPLACE ECM
AND RETEST LANYARD STOP
CIRCUIT.
REPAIR SHORT TO GROUND
IN CKT 942 BETWEEN ECM
J1 CONNECTOR AND LAN-
YARD STOP SWITCH.
Index
90-823224--2 796
ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY) - 5C-81
| 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