Perkins 1106D Troubleshooting Manual page 180

180
Troubleshooting Section
C. Perform a 45 N (10 lb) pull test on each of
the wires in the customer connector and the
Electronic Control Module (ECM) connector that is
associated with the diagnostic lamp.
D. Check the screw for the P1 OEM 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.
Verify that the repair eliminates the fault.
STOP.
Test Step 2. Inspect the Lamp, the Fuse,
and the Power Supply
A. Disconnect the lamp from the harness. Inspect the
lamp in order to determine if the lamp has failed.
B. Measure the resistance across the two terminals
of the lamp. If the resistance is more than 2000
Ohms, the bulb has failed.
C. Check the battery by connecting a test lamp
across the terminal of the battery.
Expected Result:
The lamp has less than 2000 Ohms and the power
supply is OK.
Results:
•
OK – The lamp appears to be operating correctly
at this time. Proceed to Test Step 3.
•
Not OK
Repair: Replace the suspect component or repair
the suspect component.
Verify that the repairs have eliminated the fault.
STOP.
Test Step 3. Measure the Input to the
Lamp at the Lamp Socket
A. Turn the keyswitch to the ON position.
B. Use the Perkins EST to select the "override"
function in order to switch individual lamps ON
and OFF.
Note: The "Override" function is contained in the
"Diagnostics" menu of the Perkins EST.
C. Measure the voltage at the lamp socket.
Expected Result:
The voltage should be between 12.0 VDC and 24.0
VDC.
Results:
•
OK – The voltage is between 12.0 VDC and 24.0
VDC.
Repair: Replace the bulb.
Verify that the repair eliminates the fault.
If the fault persists, measure the resistance across
the 2 terminals of the lamp. If the resistance is
more than 2000 Ohms, the replacement bulb has
failed. Replace the bulb and repeat the test.
If the fault persists, proceed to Test Step 4.
•
Not OK – The voltage is not in the range that is
expected. Proceed to Test Step 5.
Test Step 4. Test the Individual Lamp
Circuits
A. Disconnect the P1 OEM connector.
B. Temporarily disconnect the wire from the P1 OEM
connector socket that supplies the suspect lamp.
C. By using a jumper wire, connect the removed wire
to the battery-.
D. Turn the keyswitch to the ON position and observe
the lamp.
Expected Result:
The diagnostic lamp turns ON while the jumper is
connected. Also, the diagnostic lamp turns OFF
when the jumper is removed.
SENR9982