Table 96
Troubleshooting Test Steps
Values Results
1. Determine the Code
A. Connect the electronic service tool to the service tool connector.
Refer to Troubleshooting, “Electronic Service Tools”, if necessary.
B. Turn the keyswitch to the ON position.
C. Check if one of the diagnostic codes listed in Table 95 is active
or logged.
Diagnostic
Codes
Result: A -2 diagnostic code is active.
Note which 5 V supply is reporting the active sensor supply
code.
Proceed to Test Step 2.
Result: A -2 diagnostic code is logged.
An intermittent fault may be present. Refer to Troubleshoot-
ing, “Electrical Connectors - Inspect” in order to identify inter-
mittent faults.
2. Check for a Failed Sensor
A. Connect to the electronic service tool.
B. Turn the keyswitch to the ON position.
C. Disconnect a sensor on the suspect sensor supply circuit.
D. Monitor the electronic service tool while the sensor is discon-
nected to see if the active code changes to logged.
E. Connect the suspect sensor to the wiring harness
F. Repeat steps C through E for each sensor on the suspect sensor
supply.
Failed
Sensor
Result: The suspect sensor supply active code changes to
logged when a sensor is unplugged.
Repair: Replace the failed sensor.
Verify that the repair resolved the problem.
Result: The suspect sensor supply active code remains ac-
tive after all sensors on the sensor supply circuit have been
checked.
Repair: The fault is in the wiring harness.
Check all wiring on the suspect sensor supply. Refer to the
appropriate Electrical Schematic.
Replace the faulty wiring.
If the procedure did not correct the fault, contact the Dealer Solution Network (DSN).
i06019299
Solenoid Valve - Test
This procedure covers the following codes:
Table 97
Diagnostic Trouble Codes for the Solenoid Valves
J1939
Code
Description Notes
1076-2 Engine Fuel Injection
Pump Fuel Control
Valve : Erratic, Intermit-
tent, or Incorrect
The Electronic Control Module (ECM) detects an intermittent open or short circuit er-
ror in the control circuit for the fuel metering valve on the high-pressure fuel pump.
This diagnostic code will not be active if a continuous fault in the circuit is detected.
1076-5 Engine Fuel Injection Pump
Fuel Control Valve : Current
Below Normal
The ECM detects the following conditions:
A low current condition in the output from the ECM to the solenoid for the fuel metering valve on the
high-pressure fuel pump for at least 0.3 seconds.
The battery voltage is at least 9.5 VDC.
The engine will be derated.
(continued)
UENR0612 199
Circuit Tests
This document has been printed from SPI2. NOT FOR RESALE
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