Perkins NJ Series Troubleshooting Manual page 221

SENR9982-01
D. Turn the keyswitch to the ON position. Access the
"Special Tests" under the "Diagnostics" menu on
the Perkins EST. Activate the "Turbo Wastegate
Solenoid Output" on the Perkins EST. Wait at least
30 seconds for activation of the diagnostic codes.
E. Check for active diagnostic codes on the Perkins
EST.
Expected Result:
Diagnostic code 526-6 is now active.
Results:
• OK – Diagnostic code 526-6 is now active. There
is a fault in the harness between the ECM and
the solenoid.
Repair: Repair the harness or replace the harness.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminated the fault.
STOP.
• Not OK – There is still an open circuit diagnostic
code.
Repair: Perform the following procedure:
1. Temporarily connect a test ECM. Refer to
Troubleshooting, "Programming Parameters"
before replacing the ECM.
2. If the test ECM fixes the fault, reconnect the
suspect ECM. If the fault returns, permanently
install the replacement ECM.
STOP.
Test Step 6. Disconnect the Solenoid in
order to Create an Open Circuit
A. Turn the keyswitch to the OFF position.
B. Disconnect the P511 turbo wastegate solenoid
connector in order to create an open circuit.
C. Turn the keyswitch to the ON position. Access the
"Diagnostics Tests" on the Perkins EST. Activate
the "Turbo Wastegate Solenoid Test". Wait at least
30 seconds in order for the result to be displayed.
D. Check for active diagnostic codes on the Perkins
EST.
Expected Result:
Diagnostic code 526-5 is now active.
Results:
• OK – Diagnostic code 526-5 is now active.
Repair: There is a short in the solenoid.
1. Temporarily connect a replacement wastegate
regulator.
2. If the fault is eliminated, reconnect the suspect
wastegate regulator. If the fault returns,
permanently install the replacement wastegate
regulator.
STOP.
• Not OK – Diagnostic code 526-6 is still active.
Proceed to Test Step 7.
Test Step 7. Create an Open Circuit at the
ECM
A. Turn the keyswitch to the OFF position.
B. Remove the wires from P2:17 and P2:44 in order
to create an open circuit at the ECM.
C. Turn the keyswitch to the ON position. Access the
"Diagnostics Tests" on the Perkins EST. Activate
the "Turbo Wastegate Solenoid Test". Wait at least
30 seconds in order for the result to be displayed.
D. Check for active diagnostic codes on the Perkins
EST.
Expected Result:
Diagnostic code 526-5 is now active.
Results:
• OK – Diagnostic code 526-5 is now active. There
is a short circuit in the harness between the ECM
and the solenoid.
Repair: Repair the harness or replace the harness.
Use the electronic service tool in order to clear all
logged diagnostic codes and then verify that the
repair eliminated the fault.
STOP.
• Not OK – Diagnostic code 526-5 is still present.
Repair: Perform the following procedure:
1. Temporarily connect a test ECM. Refer to
Troubleshooting, "Programming Parameters"
before replacing the ECM.
221
Troubleshooting Section