
104 RENR5622
Troubleshooting Section
Repair: Verify that the breaker for the starting aid
is not tripped.
Check the wiring between the relay
connectors and the battery for an open circuit or
for a short circuit.
STOP.
Test Step 10. C
heck the Voltage at the
Resistor and
the Diode Assembly
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector at the resistor and the
diode assembly.
C. Connect a voltmeter between terminal 1 of the
resistor and the diode assembly and ground.
D. Turn the k eyswitch to the ON position.
NOTICE
Do not allow t
he ether injection system to be on for
more than two minutes. Damage to the ether solenoid
may occur.
E. Activate the ether override and observe the
voltmeter while ether injection is activated. Disable
the ether ov
erride.
Expected Result:
The voltage is 24 ± 3 VDC.
Results:
•
OK – The voltage is 24 ± 3 VDC at the connector
for the resi
stor and the diode assembly. Proceed to
Te st S tep 11.
•
Not OK – The v
oltage did not measure 24 ± 3
VDC at the connector for the resistor and the diode
assembly.
Repair: There is a problem in the harness between
the ether hold relay and the resistor and diode
assembly.
Repair the connectors or wiring and/or
replace the connectors or wiring. Verify that the
system is operating correctly. Replace the ether
canister
on the ether solenoid.
STOP.
Test Step 11. Check the Resistor and the
Diode Assembly
A. Disconne
ct the connector at the resistor and the
diode assembly.
B. Set the mu
ltimeter to the “Check Diode” setting.
C. Connect the positive lead of the multimeter to
terminal 2 and t
he negative lead to terminal 1 of
the resistor and the diode assembly and observe
the multimeter.
D. Connect the positive lead of the multimeter to
terminal 1 and the negative lead to terminal 2 of
the resistor
and the diode assembly and observe
the multimeter.
E. Repeat the me
asurements for all of the resistor
and the diode assemblies if more than one resistor
and diode assembly is present.
Expected Result:
When the posi
tive lead of the multimeter is connected
to terminal 2 and the negative lead to terminal 1, the
multimeter displays an overload “(OL)” condition.
When the positive lead of the multimeter is connected
to terminal 1 and the negative lead to terminal 2, the
multimeter
displays a number less than one.
Results:
•
OK – The resistor and the diode assembly is
operating correctly.
Repair: There is a problem in the harness between
the resistor and diode assembly and the ether
solenoid(
s). Repair the connectors or wiring and/or
replace the connectors or wiring. Verify that the
system is operating correctly. Replace the ether
canister o
n the ether solenoid.
STOP.
•
Not OK – The resistor and the diode assembly is
not operating correctly.
Repair: The resistor and the diode assembly is
causing the problem. Replace the resistor and the
diode ass
embly. Verify that the system is operating
correctly. Replace the ether canister on the ether
solenoid.
STOP.
Test Step
12.CheckforanOpeninthe
Harness
of t he Starting Aid Switch
A. Turn the keyswitch to the OFF position.
B. Disconnect the wires that are going to the starting
aid switch at the starting aid switch.
C. Turn the keyswitch to the ON position.
D. Observe
the parameter for the starting aid switch
on Cat ET.