Perkins 1104E Series Troubleshooting Manual page 107

RENR2696-01
Test Step 4. Check the Voltage at the
Throttle Demand Sensor.
Illustration 30
Typical example of the throttle demand sensor for the 1106 and 1104 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 4.5 VDC and 5.5
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 OFF position. Use
the electronic service tool to check for active
diagnostic codes.
B. Ensure that one of the following diagnostic codes
are active:
•
262-03 5 Volt Sensor Power Supply voltage
more than normal
•
262-04 5 Volt Sensor Power Supply voltage
less than normal
C. While the throttle demand 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 demand sensor.
Reconnect the throttle sensor and proceed to test
step 7.
•
Not OK
Repair: Temporarily install another throttle demand
sensor. Use the electronic service tool in order
to check if the diagnostic codes are still active.
Replace the throttle demand sensor if both of the
following conditions occur:
•
The problem is corrected with the new throttle
demand sensor.
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Troubleshooting Section
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