Perkins 1106D Troubleshooting Manual page 167

KENR6201-01
Illustration 63
Typical example of the pin locations on the P1 connector
(33) Digital speed demand device return
Test Step 1. Inspect Electrical Connectors
and Wiring
A. Inspect the P1/J1 connector, OEM harness and
the associated connectors. Thoroughly inspect
the connector on the digital speed control device.
Refer to Troubleshooting, "Electrical Connectors -
Inspect" for details.
B. Perform a 45 N (10 lb) pull test on each of the
wires in the ECM connector that are associated
with the digital speed control device:
•
P1:33
• P1:53
C. Check the screw for the ECM connector for the
correct torque of 5.0 N·m (44 lb in).
D. Check the harness for abrasion and pinch points
from the digital throttle position sensor to the ECM.
Expected Result:
All connectors, pins and sockets are completely
coupled and/or inserted and the harness is free of
corrosion, abrasion or pinch points.
Results:
• OK – Proceed to Test Step 2.
•
Not OK
Repair: Perform the following repair:
This document is printed from SPI². Not for RESALE
(53) Digital speed demand device input
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.
Verify that the repair eliminates the fault.
STOP.
Test Step 2. Check for Active Diagnostic
Codes
A. Connect the electronic service tool to the
diagnostic connector.
B. Turn the keyswitch to the ON position.
C. Monitor the active diagnostic code screen on the
electronic service tool. Check and record active
diagnostic codes.
Expected Result:
Result 1 Diagnostic code 91-8 is active.
Result 2 There are no active diagnostic codes that
are associated with the speed control circuit at this
time. However, a fault is suspected.
Results:
•
Result 1 – Proceed to Test Step 3.
•
Result 2 – There may be an intermittent connection
in the wiring. Proceed to Test Step 3.
167
Troubleshooting Section
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