Columbia ParCar P4E - Vehicle Operates in Forward Only, Not in Reverse; Vehicle Operates in Reverse Only, Not in Forward

8-5
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the red wire. Black negative
lead to black auxiliary wire from the wire harness. Key
switch on, select forward or reverse.
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the orange wire and black
negative lead to black auxiliary wire from the wire harness.
Key switch on, select forward.
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the yellow wire and black
negative lead to auxiliary black wire from the wire harness.
Key switch on, select reverse.
If 10 DC volts or greater,
continue to next test.
You should observe
greater than 10 DC volts
in forward and no volts
when switched to
reverse. If so, proceed
to next test.
If greater than 10 DC
volts, good.
If less than 10 DC volts, check
key switch wires and key switch.
Replace key switch if necessary.
If greater than 10 DC volts are
observed in forward and reverse,
disconnect orange wire and
recheck orange wire with red
positive lead. If now there is volt-
age at the orange wire, replace
diode in wire harness. See Diode
Testing page 8-7. If less than 10
DC volts were originally
observed, replace the micro
switch.
If less than 10 DC volts, replace
micro switch.
Vehicle Operates In Forward Only, Not in Reverse
Test Results
Good Bad
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the red wire. Black negative
lead to black auxiliary wire from the wire harness. Key
switch on, select forward or reverse.
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the orange wire and black
negative lead to black auxiliary wire from the wire harness.
Key switch on, select forward.
Voltmeter red positive lead to reverse micro switch (on the
console shifter), to the tab with the yellow wire and black
negative lead to auxiliary black wire from the wire harness.
Key switch on, select reverse.Voltmeter red positive lead to
forward micro switch (on the console shifter), to one tab
with the orange wire and black negative lead to auxiliary
black wire from the wire harness. Key switch on, select for-
ward, then reverse. Next, Voltmeter red positive lead to for-
ward micro switch (on the console shifter), opposite tab
with the orange wire and black negative lead to auxiliary
black wire from the wire harness. Key switch on, select
forward, then reverse.
If 10 DC volts or greater,
continue to next test.
You should observe
greater than 10 DC volts
in forward and no volts
when switched to
reverse. If so, proceed
to next test.
If greater than 10 DC
volts, continue to next
test.
In forward position, both
orange wire connections
should have greater
than 10 volts, and both
should have no voltage
in reverse.
If less than 10 DC volts, check
key switch wires and key switch.
Replace key switch if necessary.
If greater than 10 DC volts is
observed in forward and reverse,
disconnect orange wire and
recheck orange wire with red
positive lead. If now there is volt-
age at the orange wire, replace
diode in wire harness. If less than
10 DC volts were originally
observed, replace the micro
switch.
If less than 10 DC volts, replace
micro switch.
If voltage is observed on either
orange wire terminal in the
reverse position, check wire har-
ness diode and wiring to reverse
micro switch.
Vehicle Operates In Reverse Only, Not In Forward
Test Results
Good Bad
Note: The two orange wires on the forward micro switch can be installed to the micro switch in reverse order without
problem. So long as one is connected to the common terminal and the other to the N.O. (normally open), the vehicle
will operate correctly.