Troubleshooting

132 RENR2696-01
Troubleshooting Section
Repair: Connect the cables one at a time. Connect
terminal 44 to t
he ECM. Check if the diagnostic
code reappears. Then connect terminal 17 to the
ECM. Use the electronic service tool to check if
the diagnosti
c 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 Bre
akout T with 3 terminals to the throttle
position sensor.
C. Turn the keys
witch 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 pos
ition.
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 thr
ottle position is working correctly.
Proceed to Test Step 9.
•
Not OK – The
throttle position sensor is faulty.
Proceed to Test Step 10.