Mercury 305 CID - Page 571

90-823225--1 10965E-30 - ELECTRONIC FUEL INJECTION (MULTI-PORT AND THROTTLE BODY)
ECM Connector and EFI Symptoms Chart (J-2 Circuits)
Pi
Pin
Circuit
(CKT)
N
Wire
Normal Voltage
Diag-
nostic
Tbl
Possible
Pin
Func-
tion
()
Num-
ber
(#)
Wire
Color
Ignition
ON
Engine
Running
Trouble
Codes
DTC(s)
Possible
Symptoms
J2-1
Not
Used
– – – – – –
J2-2
Not
Used
– – – – – –
J2-3
Not
Used
– – – – – –
J2-4
Not
Used
– – – – – –
J2-5
Injector
Driver
468
LT
GRN
B+ B+ None Rough Idle, Lack Of Power, Stall
J2-6
Ignition
Control
Ref.
Low
463
BLK/
RED
0
(NOTE 5)
0
(NOTE 5)
None Poor Performance
J2-7
Port
Fuel
Jumper
901 WHT – – None –
J2-8
Ignition
Control
Ref.
High
430
PUR/
WHT
5V 1.6V None No Restart
J2-9
Fuel
Pump
Relay
Driver
465
DK
GRN/
WHT
0
(NOTE
1&5)
B+ None No Start
J2-10
Not
Used
– – – – – –
J2-11
Coolant
Over
temp.
112
DK
GRN
0 0 NONE
Power Reduction Mode or
Improper Audio Warning
J2-12
Not
Used
– – – – – –
J2-13
IAC “A”
Low
442
BLU/
BLK
Not
Usable
Not
Usable
None Rough Unstable or Incorrect Idle
J2-14
IAC “B”
Low
443
GRN/
WHT
Not
Usable
Not
Usable
None Rough Unstable or Incorrect Idle
J2-15
Injector
Ground
450
BLK/
WHT
0
(NOTE 5)
0
(NOTE 5)
None
Rough Running, Lack Of Power,
Poor Performance
J2-16
Not
Used
– – – – – –
NOTE: J2-7 is not used on the Throttle Body Injection system.