Section 04 ENGINE MANAGEMENT SYSTEM
Subsection 03 (MONITORING SYSTEM/FAULT CODES)
FAULT
CODE
DESCRIPTION
POSSIBLE FAULT
ACTION
509
Idle air control valve
pin(s) disconnected or
shorted to GND
Faulty IACV - disconnected
connector - faulty terminals -
cut wires - shorted wire
Make sure IACV connector is fully
inserted. Check circuits between idle
valve motor pins and ECM pins D3-1,
E4-2, C4-3 and D4-4.
520
Oil pressure switch fault
Faulty OPS - disconnected
connector - faulty terminals
- cut wires - shorted wire to
battery
Check for disconnected oil pressure
switch on engine. Check the pressure
switch contact when engine is running
over idle speed. Replace the switch
if necessary. Check circuits between
switch and ECM pin F2.
560
Throttle position sensor
5 V power supply pin
shorted to battery 12 V
Shorted wire - faulty TPS
sensor
Check circuits between TPS pin 1, MAPTS
pin 1 and pin 3 and ECM pin A1. Check
TPS and MAPTS.
561
Throttle position sensor
5 V power supply pin
shorted to GND or open
Shorted wire - faulty TPS
sensor
Check circuits between TPS pin 1, MAPTS
pin 1 and pin 3 and ECM pin A1. Check
TPS and MAPTS.
562
Battery voltage under
8 V at main relay voltage
input
Battery voltage too low -
disconnected connector - faulty
terminals - cut wires
Check battery voltage for 12 to 13 volts
with engine stopped. Check battery
voltage for 13.8 to 15.0 volts with engine
idling. Check connections on magneto
and voltage regulator.
563
Battery voltage over
16 V at main relay
voltage input
Battery voltage too high -
faulty voltage regulator - faulty
magneto
Check battery voltage for 13.8 to
15.0 volts with engine idling. Replace
voltage regulator if necessary.
600
CAN communication
port off
CAN communication port
shorted - Incompatible CAN
communicating component
connected on CAN port
Check for damage circuit between
diagnostic connector 1 and 2 and ECM
B1 and C1. Replace multifunction gauge
if necessary. Test with disconnected
multifunction gauge.
615
Starter solenoid not
connected
Faulty solenoid - faulty
terminal at solenoid or at
engine connector - dirt stuck
on solenoid blades and/or
terminals - wires from the ECM
to the solenoid cut
Check solenoid/gauge fuse. Look
for damaged or disconnected starter
solenoid, damaged circuit wires, damaged
connectors or damaged ECM output pins.
Check circuit from solenoid OR/BR wire
to ECM pin L3.
616
Starter solenoid shorted
to GND
Faulty solenoid - faulty terminal
at solenoid or at engine
connector - dirt or water stuck
on solenoid blades and/or
terminals - wires from the ECM
to the solenoid shorted to a
GND
Check for damaged or disconnected
starter solenoid, damaged circuit wires,
damaged connectors or damaged ECM
output pins. Check circuit from solenoid
OR/BR wire to ECM pin L3.
617
Starter solenoid shorted
to battery 12 V
Faulty solenoid - faulty
terminal at solenoid or at
engine connector - dirt stuck
on solenoid blades and/or
terminals - wires from the ECM
to the solenoid shorted to a
power source
Check for damaged or disconnected
starter solenoid, damaged circuit wires,
damaged connectors or damaged ECM
output pins. Check circuit from solenoid
OR/BR wire to ECM pin L3.
196
vmr2008-134
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