Perkins 1104E Series Troubleshooting Manual page 129

RENR2696-01
Test Step 4. Check the Voltage at the
Throttle Position Sensor.
Illustration 47
Typical example of the throttle position sensor for the 1104 and 1106 engines
A. Turn the keyswitch to the OFF position.
B. Install a Breakout T with 3 terminals for this test
procedure.
C. Turn the keyswitch to the ON position.
D. Measure the voltage between terminal A and
terminal B.
Expected Result:
Supply voltage should be between 7.6 VDC and 8.4
VDC.
Results:
•
OK – The supply voltage is reaching the sensor.
Proceed to Test Step 5.
•
Not OK – Proceed to Test Step 6.
Test Step 5. Disconnect the Throttle
Position Sensor and Check for Active
Diagnostic Codes.
A. Turn the keyswitch to the ON position. Use
the electronic service tool to check for active
diagnostic codes.
B. Ensure that one of the following diagnostic codes
are active:
•
41-03 8 Volt Sensor Power Supply, voltage
more than normal
•
41-04 8 Volt Sensor Power Supply, voltage less
than normal
C. While the throttle position sensor is connected and
disconnected, monitor the electronic service tool
screen. Check and record active diagnostic codes.
Expected Result:
Diagnostic codes are active after disconnecting the
throttle sensor.
Diagnostic codes are not active after disconnecting
the throttle sensor.
Results:
•
OK – Diagnostic codes are not active after
disconnecting the throttle position sensor.
Reconnect the throttle sensor and proceed to test
step 7.
•
Not OK
Repair: Temporarily install another throttle position
sensor. Use the electronic service tool in order
to check if the diagnostic codes are still active.
Replace the throttle position sensor if both of the
following conditions occur:
•
The problem is corrected with the new throttle
position sensor.
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Troubleshooting Section
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