Perkins 1106D Troubleshooting Manual page 139

SENR9982
G. Turn the keyswitch to the OFF position.
H. Remove the P1 OEM connector from the ECM.
I. Install the pin P1:53.
J. Connect the P1 OEM connector to the ECM.
Expected Result:
The duty cycle is between 10 and 22 percent with the
throttle pedal assembly in the low idle position, and
the duty cycle is between 75 and 90 percent with the
throttle pedal assembly in the high idle position.
Results:
•
OK – A good signal from the digital throttle position
sensor is reaching the ECM. Verify that the ECM
is receiving the correct battery voltage. If the ECM
is receiving the correct battery voltage, temporarily
connect a test ECM and verify that the fault is
resolved. If the fault is rectified with the test ECM,
reconnect the suspect ECM. If the fault returns with
the suspect ECM, replace the ECM. STOP.
•
Not OK – There is a fault with signal wire in the
harness. Proceed to Test Step 11.
Test Step 10. Remove the Digital Throttle
Position Sensor from the Throttle Pedal
Assembly
Illustration 36
Throttle pedal assembly
(1) Sensor mounting face
(2) Sensor drive key
(3) Mounting screw holes
Illustration 37
Throttle block assembly
(1) Mounting screw holes
(2) Sensor housing
(3) Sensor drive slot
Illustration 38
Throttle block assembly
(1) Mounting screw holes
(2) Sensor drive slot
(3) Sensor mounting face
A. Verify that the keyswitch is in the OFF position.
B. Note the sensor orientation in the throttle pedal
assembly and the sensor connector for the
harness routing prior to sensor removal. Remove
the digital throttle position sensor from the throttle
pedal assembly. Thoroughly inspect the connector
and the harness for signs of abrasion.
C. Connect a multimeter that is capable of measuring
a PWM duty cycle to terminal "C" of the breakout
"T".
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D. Turn the keyswitch to the ON position.
E. Display the duty cycle output of the digital throttle
position sensor while the sensor slot is released.
Use a screwdriver to advance the sensor slot to
the maximum position. Refer to Illustration 38.
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Troubleshooting Section
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