LINES GP-REAR ATTACHMENT 5105574 - Caterpillar

Illustration 1 g01122447
Schematic for the indicator lamp
The ECM provides a path to ground for the warning lamp. When the ECM connects the warning lamp to ground the warning lamp will turn on.
Table 1
Troubleshooting Test Steps Values Results
1. Check for Normal Operation of the Indicator Lamp
A. Monitor the warning lamp.
1. Turn the keyswitch to the ON position. The indicator lamp should turn on for 5 seconds. If the warning lamp does not turn on, check that the bulb is not burned out or check that no breakers are tripped. After 5 seconds, the lamp should turn off. If the warning lamp does not turn off, check for an event code.
Note: The lamp will only turn off only if a "Warning", a "Derate", or a "Shutdown" condition does not exist.
Indicator Lamp
Results: The warning lamp appears to be operating correctly at this time.
STOP
Results: The warning lamp is not functioning correctly. Check the bulb. Replace the bulb if the bulb is not OK. If the bulb is OK, proceed to Test Step 2.
Illustration 2 g01119456
Left side view
(1) P61 customer connector
(2) J1/P1 ECM connectors
Illustration 3 g01216602
P1 terminals that are associated with the indicator lamp
(P1-29) Indicator lamp
Illustration 4 g01216603
J61 and P61 terminals that are associated with the warning lamp
(25) Indicator lamp
Table 2
Troubleshooting Test Steps Values Results
2. Inspect the Electrical Connectors and the Wiring
A. Turn the keyswitch to the OFF position.
B. Thoroughly inspect connectors (1) and (2). Inspect the connections on the indicator lamp.
C. Perform a 45 N (10 lb) pull test on each of the wires that are associated with the warning lamp.
D. Check the allen head screw on each ECM connector for the proper torque.
E. Check the allen head screw on the customer connector for the proper torque.
F. Check the harness and wiring for abrasions and for pinch points from the warning lamp to the ECM.
Electrical Connectors and Wiring
Results: The connectors and the wiring are OK. Proceed to Test Step 3.
Results: There is a problem with a connector and/or the wiring.
Repair: Repair the connector and/or the wiring. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are coupled. Verify that the problem is resolved.
STOP
3. Test the Indicator Lamp Circuit at the ECM Connector
A. Disconnect the J1/P1 connectors.
B. Connect a jumper wire between terminal P1-29 and engine ground.
C. Turn the keyswitch to the ON position. Observe the lamp.
D. Remove the jumper wire and observe the warning lamp.
Indicator Lamp Circuit
Results: The warning lamp turned on while the jumper was connected. The warning lamp turned off when the jumper was removed. The warning lamp circuit is functioning properly. Proceed to Test Step 6.
Results: The warning lamp did not turn on. There is a problem with the circuit for the warning lamp. Proceed to Test Step 4.
4. Test the Circuit at the Indicator Lamp
A. Disconnect wire from customer connector P61-25 (indicator lamp).
B. Connect a jumper wire between the lamp open terminal and engine ground.
C. Turn the keyswitch to the ON position. Observe the lamp.
D. Disconnect the jumper wire and observe the