Perkins 1104E Series Troubleshooting Manual page 132

132
Troubleshooting Section
Repair: Connect the cables one at a time. Connect
terminal 44 to the ECM. Check if the diagnostic
code reappears. Then connect terminal 17 to the
ECM. Use the electronic service tool to check if
the diagnostic code reappears. Replace the faulty
cable. Verify that the repair has eliminated the fault.
STOP.
Test Step 8. Check the Position of
Throttle Position Sensor.
A. Turn the keyswitch to the OFF position.
B. Install a Breakout T with 3 terminals to the throttle
position sensor.
C. Turn the keyswitch to the ON position.
D. Measure the PWM signal. Connect one probe
to terminal C (throttle position sensor) and the
other probe to terminal B sensor common of the
Breakout T.
E. Observe the position while the engine speed
control is moved from the minimum to the
maximum position.
Expected Result:
The position should be between 10 and 22 percent in
the low idle position.
The position should be between 75 and 90 percent
in the high idle position.
Results:
•
OK – The throttle position is working correctly.
Proceed to Test Step 9.
•
Not OK – The throttle position sensor is faulty.
Proceed to Test Step 10.
RENR2696-01