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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
12
J1587 CODE:
P187 3 - POWER TAKE OFF (PTO) INPUT FAILED HIGH (HIGH VOLTAGE)
(ALSO CALLED VARIABLE SPEED GOVERNOR - VSG)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
12-5
Check for Short to
+5 volt Line
l Connect ail connectors to ECM.
Turn ignition on.
l Read voltage on vernier control
harness connector pin B (525)
to pin A (952).
12-6 (Deleted)
12-7
Check ECM
Connector8
l Disconnect the vehicle harness
connector.
l Check terminals at the
vehicle harness connector (both
ECM and harness side) for
damage; bent, corroded, and
unseated pins or sockets.
Greater than 1.0 volts.
Signal line (ckt #510 or #525)
is shorted to the vehicle +5 volt
line (ckt #916) or another voltage
source. Repair short.
Then go to 12-30.
Less than or equal
to 1.0 volts.
Go to 12-7.
Replace ECM (pare 7-29.1).
Then go to 12-30.
Problem found.
Repair terminals/connectors
(pare 7-77). Then go to 12-30.
H-113
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