Troubleshooting

(Table 96, contd)
3. Create an Open Circuit at the Suspect Sensor
Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the sensor connector of the suspect sensor with
the active -4 diagnostic code.
C. Turn the keyswitch to the ON position.
D. Monitor the diagnostic codes on the electronic service tool.
Check for an active -3 diagnostic code for the suspect sensor.
Wait at least 30 seconds in order for the diagnostic codes
to become active.
E. Turn the keyswitch to the OFF position.
Open Circuit
Recognized
Result: The -4 diagnostic code remains active for the sus-
pect sensor.
Repair: The fault is in the wiring for the suspect sensor.
Check all wiring between the suspect sensor and the ECM.
Refer to the appropriate Electrical Schematic.
Replace the faulty wiring.
Verify that the problem is resolved.
Result: A -3 diagnostic code became active after discon-
necting the sensor.
Repair: The wiring is OK. Replace the sensor.
Verify that the problem is resolved.
If the procedure did not correct the fault, contact the Dealer Solution Network (DSN).
i06019176
Sensor Supply - Test
This procedure covers the following codes:
Table 97
Diagnostic trouble Codes for the Sensor Supply Circuit
J1939
Code
Description
Notes
3509-2 Sensor Supply Voltage 1 : Erratic, Intermittent,
or Incorrect
The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply
circuit supplied on the following pins:
J2:8
J2:9
J2:10
J2:11
J2:12
J2:13
The engine will be derated.
3510-2 Sensor Supply Voltage 2 : Erratic, Intermittent,
or Incorrect
The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply
circuit supplied on the following pins:
J1:14
J1:16
If equipped, the warning lamp will come on. The engine will be derated.
3511-2 Sensor Supply Voltage 3 : Erratic, Intermittent,
or Incorrect
The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply
circuit supplied on the following pin:
J1:17
If equipped, the warning lamp will come on.
The following background information is related
to this procedure:
The ECM supplies regulated +5 VDC to the following
sensors on the J2 connector (a 3509-2 diagnostic
code applies to the 5 VDC supply for these sensors) :
• The position sensor for the intake throttle valve
208 UENR0612-07
Circuit Tests
This document has been printed from SPI2. NOT FOR RESALE