Perkins 854E-E34TA, Troubleshooting Manual, Page: 195 / 252

(Table 94, contd)
2. Create a Short at the Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the suspect sensor.
C. Install the jumper wire between terminal 1 (sensor signal)
and terminal 2 (sensor return) at the sensor connector.
D. Turn the keyswitch to the ON position.
E. Monitor the diagnostic codes on the electronic service tool.
Check for an active -4 diagnostic code for the suspect sensor.
Wait at least 30 seconds in order for the diagnostic codes
to become active.
F. Turn the keyswitch to the OFF position.
Short Circuit
Recognized
Result: The -3 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 -4 diagnostic code became active after creating
the short at the sensor connector.
Repair: The wiring is OK. Replace the suspect sensor.
Verify that the problem is resolved.
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 disconnect-
ing 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 95
Diagnostic trouble Codes for the Sensor Supply Circuit
J1939
Code
Description
Notes
(continued)
UENR0612 195
Circuit Tests
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