Wire Color Code Abbreviations - Mercury 200 OptiMax Jet Drive Service Manual

Cause
6.1 Fouled spark plug
6.2 Speed reduction
6.3 Low air pressure in rails
6.4 TPS malfunction
Cause
7.1 Low battery voltage (PCM cuts out below 8 volts)
(fuel pump requires 9 volts)
7.2 Overheat condition (engine and/or air
compressor)
7.3 Oil pump electrical failure
7.4 TPS failure
If TPS fails, RPM is reduced to idle
7.5 CPS failure
If CPS fails, the engine will run rough or stop running
Cause
8.1 TPS failed
Cause
9.1 Loose wire or pin connectors between PCM and
coil primary
9.2 Faulty ignition coil
9.3 Faulty spark plug
9.4 Faulty spark plug wire

Wire Color Code Abbreviations

BLK
BRN
GRN
PNK
RED
WHT
LT or LIT
2. If the spark plug is partially fouled or the plug gap is too small, the CDS may indicate the incorrect cylinder as having an ignition fault. Example: If
the CDS indicates an ignition fault on cylinder #3, the problem may be on the prior cylinder in the firing order ‑ I.E. cylinder number #2.
90-8M0050731 MAY 2011
6. Engine Runs Rough Above 3000 RPM
Refer to 3.2.
Refer to 7.4 and 7.5.
Refer to 1.2.
Refer to 2.4.
7. Speed Reduction (RPM reduced)
Check battery and/or alternator.
Check electrical connections.
Check water pump impeller/cooling system.
Check electrical connection.
Check electrical connection.
Refer to Crankshaft Position Sensor Test.
8. Engine RPM Reduced to Idle Only
Refer to 2.4.
Use CDS to monitor system.
9. Loss of Spark on One Cylinder
Check connectors.
Replace coil.
Replace spark plug.
Replace spark plug wire.
Wire Color Abbreviations
Black
Brown
Green
Pink
Red
White
Light
Action
Action
Action
Action
2.
BLU
GRY
ORN or ORG
PPL or PUR
TAN
YEL
DK or DRK
Ignition
Blue
Gray
Orange
Purple
Tan
Yellow
Dark
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