Troubleshooting

RENR2696-01 187
Troubleshooting Section
Repair: There is a problem with the wiring between
the fuel pump po
wer relay and the machine
interface connector P20. Repair the wiring or
replace the wiring. Verify that the repair has
eliminated th
eproblem.
STOP.
•
Not OK
Repair: There
is no voltage or the voltage is out
of the acceptable range.
Proceed to Te
st Step 7.
Test Step 7. Check the Voltage at the
Relay Coil for t he Fuel Injection Pump
g00910876
Illustration 99
Schematic for the fuel injection pump and the ECM power supply
A. Turn the keyswitch to the ON position.
B. Measure the voltage between terminal C and
terminal D.
C. Refer to illustration 99.
D. Turn the keyswitch to the OFF position and then
turn the keyswitch to the ON position.
Note: The relay should emit a clicking sound as the
keyswitch is turned to the ON position.
E. Check that the voltage is present with the
keyswitch in the ON position.