Perkins NJ Series Troubleshooting Manual page 204

204
Troubleshooting Section
Illustration 86
Typical view of the pin locations for the P1 OEM connector
(35) Mode switch return (GND)
Test Step 1. Inspect Electrical Connectors
and Wiring
A. Turn the keyswitch OFF.
B. Thoroughly inspect the P1 OEM connector.
Thoroughly inspect the mode switch connectors,
plugs and interconnections on the harness. Refer
to Troubleshooting, "Electrical Connectors -
Inspect" for details.
C. Perform a 45 N (10 lb) pull test on each of the
wires in the P1 OEM connector that are associated
with the mode selector switches.
D. Check the screw for the Electronic Control Module
(ECM) connector for the correct torque of 5.0 N·m
(44 lb in).
E. Check the harness for abrasions and for pinch
points from the battery to the ECM.
Results:
• OK – Proceed to Test Step 2.
• Not OK
Repair: Repair the connectors or the harness
and/or replace the connectors or the harness.
Ensure that all of the seals are correctly in place
and ensure that the connectors are completely
coupled.
(39) Mode switch 1
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminates the fault.
STOP.
•
Test Step 2.
Test Step 2. Check the Status of the Mode
Selector Switch
A. Turn the keyswitch to the OFF position.
B. Connect the Perkins Electronic Service Tool (EST)
C. Turn the keyswitch to the ON position.
D. Monitor the status screen on the Perkins EST.
Expected Result:
The switch status should change as you cycle the
mode switches. When the switch is in the OFF
position the switch has an open condition. When the
switch is in the ON position the switch has a closed
condition.
Results:
• OK
(46) Mode switch 2
– If the fault has not been eliminated proceed to
to the diagnostic connector.
Cycle the mode switch to the ON position and to
the OFF position.
SENR9982-01
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