FA606386 Force DECAL, NUMERAL "45"

Illustration 1 g01394970
Schematic of the indicator lamp circuit
Illustration 2 g01395075
Pin locations on the P1 connector
(1) Ground (GND)
(2) Ground (GND)
(3) Ground (GND)
(7) Battery (+)
(8) Battery (+)
(9) Ground (GND)
(10) Ground (GND)
(15) Battery (+)
(16) Battery (+)
(18) Low hydraulic oil pressure lamp
(19) High hydraulic oil temperature lamp
(40) Keyswitch
(59) Check engine lamp
(60) Action lamp
(62) Low engine oil pressure lamp
(63) Wait to start lamp
(64) High intake air temperature lamp Test Step 1. Inspect Electrical Connectors and Wiring
Turn the keyswitch to the OFF position.
Thoroughly inspect the P1 connector, and the lamp connections. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the customer connector and the ECM connector that are associated with the diagnostic lamp.
Check the screw for the P1 connector for the correct torque of 5.0 N m (44 lb in).
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.STOPTest Step 2. Inspect the Lamp, the Fuse and the Power Supply
Disconnect the lamp from the harness. Inspect the lamp in order to determine if the lamp has failed.
Check for any in-line fuses that have failed.
Make sure that the correct voltage is being supplied to pin 1 of the warning indicator panel.
Make sure that pin 2 of the warning indicator panel is correctly grounded. Expected Result:The lamp is working correctly 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.STOPTest Step 3. Measure the Input to the Lamp at the Lamp Socket
Turn the keyswitch to the ON position.
Use the electronic service tool 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 electronic service tool.
Measure the voltage at the lamp socket. Expected Result:The voltage should be between 12.0 Volts DC and 24.0 Volts DC.Results:
OK - The voltage is between 12.0 Volts DC and 24.0 Volts DC.Repair: Replace the bulb.Verify that the repair eliminates the fault.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
Disconnect the P1 connector.
Temporarily disconnect the wire from the P1 connector socket that supplies the suspect lamp.
By using a jumper wire, connect the removed wire to the battery-.
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.Results:
OK - The circuit for the diagnostic lamp is functioning correctly. Proceed to Test Step 5.
Not OK - The lamp did not turn ON. The lamp circuit is not functioning correctly. There is a fault in the harness between the lamp and the ECM.Repair: Repair the lamp circuit.Verify that the repair eliminated the fault.STOPTest Step 5. Check the Voltage at the ECM
Disconnect the P1 connector.
Temporarily disconnect the wire from the P1 connector that supplies the suspect lamp.
Fabricate the jumper wire with a suitable pin for the P1 connector.
Install one end of the jumper wire into the P1 connector socket that supplies the suspect lamp. Connect a voltage test bulb between the battery+ and the jumper wire.
Reinstall the P1 connector to the ECM.
Turn the keyswitch to the ON position. Use the electronic service tool 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 electronic service tool.Expected Result:The lamp should illuminate.Results:
OK - The ECM is operating correctly. There is a fault in the wiring or the lamp. Repair the wiring or the lamp, as required. Verify that the repair eliminates the fault.STOP
Not OK - Temporarily connect a test ECM. The test ECM must be programmed with the same parameters as the suspect ECM. Check the operation of the diagnostic lamp when the test ECM is installed. If the fault is resolved with the test ECM, then reconnect the suspect ECM. If the fault returns with the suspect ECM, then replace the suspect ECM.STOP